| Post with latest comment on top of index page - Ruby On Rails Posted: 22 May 2016 07:18 AM PDT I need to display post with latest made comment in it on top of page Here is my posts controller part with index def def index @posts = Post.all.order("posts.created_at desc") def new @post = Post.new end end
I read Rails docs and found .order and .where and I think those two are solutions for my problem but I am not sure how to use it |
| How to manually specify a :delete request in the URL? Posted: 22 May 2016 07:02 AM PDT Situation: I want to destroy the current session in Rails, and am currently signed into an admin model setup via devise. I thought it would be enough to input site.io/admins/sign_out into the URL, but this assumes a GET request and doesn't work. No route matches [GET] "/admins/sign_out" A method: :delete request needs to be made to destroy the session. Can something be done like site.io/admins/sign_out{action:delete}? UPDATE Per request, this is the route related to admin. devise_for :admins
|
| How to solve the update bundler warning in rails when deploying to heroku? Posted: 22 May 2016 06:50 AM PDT How do I solve the following warning? I updated my ruby version to 2.3.1 and rails version to 4.2.6. I get this warning when I push my app to heroku. remote: Cleaning up the bundler cache. remote: Warning: the running version of Bundler is older than the version that created the lockfile. We suggest you upgrade to the latest version of Bundler by running `gem install bundler`. remote: Removing mime-types-data (3.2016.0221)
I removed the Gemfile.lock and ran bundle install and also tried to update the bundler but the warning never goes away . suramai@rails-tutorial:~/workspace/converse (master) $ gem install bundler Successfully installed bundler-1.12.4 1 gem installed suramai@rails-tutorial:~/workspace/converse (master) $
|
| Change wildcard route based off an array from Rails 3 to Rails 4 Posted: 22 May 2016 06:48 AM PDT In Rails 3, I have these: # shop.rb class Shop < ActiveRecord::Base TYPES = %w(cafe restaurant) end # shops_controller.rb class SpotsController < ApplicationController def cafe end def restaurant end end # routes.rb resources :shops do resources :reviews, :photos member do get *Shop::TYPES end end
The idea is to generate get routes based off the Shop::TYPES array: get :cafe get :restaurant
In any case when I create another new type in Shop, I won't have to update my routes. I am upgrading to Rails 4. What is the equivalent to get *Shop::TYPES, because I couldn't find the answer? |
| Devise issue while starting rails app in production mode Posted: 22 May 2016 05:51 AM PDT I have a rails app on my server which runs perfectly when I do rails s -b domain.name but when I run rails s -b domain.name -e production or RAILS_ENV=production rails s -b domain.name I have this following error. => Booting Puma => Rails 4.2.6 application starting in production on http://domain.name:3000 => Run 'rails server -h' for more startup options => Ctrl-C to shutdown server Exiting /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:244:in 'rescue in load_dependency': /home/deploy/appname/app/controllers/users/confirmations_controller.rb:2: unknown regexp options - cfrat (SyntaxError) /home/deploy/appname/app/controllers/users/confirmations_controller.rb:7: unknown regexp options - cfrat /home/deploy/appname/app/controllers/users/confirmations_controller.rb:12: unknown regexp options - cfrat /home/deploy/appname/app/controllers/users/confirmations_controller.rb:13: syntax error, unexpected keyword_def, expecting ':' def show ^ /home/deploy/appname/app/controllers/users/confirmations_controller.rb:27: syntax error, unexpected keyword_end, expecting end-of-input from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:237:in 'load_dependency' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in 'require' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:360:in 'require_or_load' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:317:in 'depend_on' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:233:in 'require_dependency' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/engine.rb:472:in 'block (2 levels) in eager_load!' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/engine.rb:471:in 'each' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/engine.rb:471:in 'block in eager_load!' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/engine.rb:469:in 'each' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/engine.rb:469:in 'eager_load!' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/engine.rb:346:in 'eager_load!' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/application/finisher.rb:56:in 'each' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/application/finisher.rb:56:in 'block in <module:Finisher>' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/initializable.rb:30:in 'instance_exec' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/initializable.rb:30:in 'run' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/initializable.rb:55:in 'block in run_initializers' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:228:in 'block in tsort_each' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:350:in 'block (2 levels) in each_strongly_connected_component' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:431:in 'each_strongly_connected_component_from' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:349:in 'block in each_strongly_connected_component' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:347:in 'each' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:347:in 'call' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:347:in 'each_strongly_connected_component' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:226:in 'tsort_each' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:205:in 'tsort_each' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/initializable.rb:54:in 'run_initializers' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/application.rb:352:in 'initialize!' from /home/deploy/appname/config/environment.rb:5:in '<top (required)>' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in 'require' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in 'block in require' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in 'load_dependency' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in 'require' from /home/deploy/appname/config.ru:3:in 'block in <main>' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in 'instance_eval' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in 'initialize' from /home/deploy/appname/config.ru:in 'new' from /home/deploy/appname/config.ru:in '<main>' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in 'eval' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in 'new_from_string' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/builder.rb:40:in 'parse_file' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/server.rb:299:in 'build_app_and_options_from_config' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/server.rb:208:in 'app' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/commands/server.rb:61:in 'app' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/server.rb:336:in 'wrapped_app' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/rack-1.6.4/lib/rack/server.rb:272:in 'start' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/commands/server.rb:80:in 'start' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:80:in 'block in server' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:75:in 'tap' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:75:in 'server' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:39:in 'run_command!' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/railties-4.2.6/lib/rails/commands.rb:17:in '<top (required)>' from /home/deploy/appname/bin/rails:9:in 'require' from /home/deploy/appname/bin/rails:9:in '<top (required)>' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/spring-1.7.1/lib/spring/client/rails.rb:28:in 'load' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/spring-1.7.1/lib/spring/client/rails.rb:28:in 'call' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/spring-1.7.1/lib/spring/client/command.rb:7:in 'call' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/spring-1.7.1/lib/spring/client.rb:30:in 'run' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/spring-1.7.1/bin/spring:49:in '<top (required)>' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/spring-1.7.1/lib/spring/binstub.rb:11:in 'load' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/spring-1.7.1/lib/spring/binstub.rb:11:in '<top (required)>' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 'require' from /home/deploy/.rbenv/versions/2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 'require' from /home/deploy/appname/bin/spring:13:in '<top (required)>' from bin/rails:3:in 'load' from bin/rails:3:in '<main>'
The error seems to come from Devise auto generated files but I cannot figure out why it happens only in prodcution mode. |
| Rails auto-submit radio button with AJAX Posted: 22 May 2016 05:44 AM PDT I need to be able to filter categories that contain given brands. I have a model Brand, Category and Country and I have a HBTM relationship between them. I have radio buttons for each brand and I need to be able to filter the categories that the selected brand is included to. I want it to happen "on click", without submit button. I need to know how to make the radio buttons to send a request to the server for categories that contain that brand (from the clicked radio button) without submit button and respond with JavaScript and reload an HTML element with updated categories. I would appreciate any help or hint. Controller: class MulticountryController < ApplicationController def index @brands = Brand.includes(:categories, :countries) @categories = Category.includes(:brands, :countries) @countries = Country.includes(:brands, :categories) end
end View: <div class="container-brands" style="display: inline-block;"> <% @brands.each do |brand| %> <div id="checkbox-brands"> <%= radio_button_tag(:brand, brand.id ) %><%= brand.name %> </div> <% end %>
<div class="container-categories" style="display: inline-block;"> <% @categories.each do |category| %> <div id="checkbox-category"> <%= radio_button_tag(:category, category.id) %><%= category.name %> </div> <% end %>
Brands controller: class BrandsController < ApplicationController def update @brand = Brand.find(params[:id]) @categories = @brand.categories respond_to do |format| format.js end end
end Routes: Rails.application.routes.draw do resources :brands root 'multicountry#index'
|
| undefined method `_path' when using params Posted: 22 May 2016 06:38 AM PDT I'm new to Rails and currently I'm building a game app. My game contains multiple levels. I want the url of the game to contain the number of each level. For example: http://localhost:3000/game1/play/1 http://localhost:3000/game1/play/2
In order to achieve this, I understand that I need to use params, here's my code: routes.rb: Rails.application.routes.draw do devise_for :users resources :game1 get "/game1" => "game1#index" get "/game1/play/:level" => "game1#play" get "/game1/instruction" => "game1#instruction" get "/pages/*page" => "pages#show" get "/pages/about" => "pages#about" root "pages#show", page: "home" end
controller: class Game1Controller < ApplicationController def index end def play @game1 = Game1lv.find(params[:level]) @userid = current_user.id @usergame1lv = User.where(id: @userid).limit(1).pluck(:game1lv) if @usergame1lv == [nil] @usergame1lv = 1 end @game1l = Game1lv.where(:level => @usergame1lv).limit(1).pluck(:imagelink) @game1a = Game1lv.where(:level => @usergame1lv).limit(1).pluck(:answer) @game1link = @game1l[0].to_s @game1answer = @game1a[0].to_s @game1answer_user = params["answer"] if @game1answer_user == @game1answer redirect_to game1_play_path(@game1), :flash => { :success => "You are right!" } else #flash.now[:alert] = 'You are wrong! Lets try again!' end end def instruction end end
view: <body><center> <br><b>Answer: </b><br><br> <%= form_tag game1_play_path(@game1), :method => :get, :id => "text_form" do %> <%= text_field_tag "answer", "" ,class: 'textbox_game' %> <br><br> <%= submit_tag("Submit", :class => "button_game") %> <% end %> </center></body>
Now when I go to the url: http://localhost:3000/game1/play/1
Rails show the error: undefined method `game1_play_path' for #<#<Class:0x943de50>:0x9447720>
Rails indicate that the error is at this line in the view file: <%= form_tag game1_play_path(@game1), :method => :get, :id => "text_form" do %>
Please show me what I'm doing wrong and why that method is undefined. Thanks in advance. |
| Active record, undefined method Posted: 22 May 2016 05:13 AM PDT I am getting undefined method error in my rails console if I try to get something from model SubQuantity
I have a model called Subquantity, right now in my model I have
SubQuantity.rb
belongs_to :product
belongs_to :cart
end
and I have an integer defined in SubQuantity model called sub_quantity. In my code I am trying to do something like this
subq = SubQuantity.where(product_id:@product.id, cart_id:current_user.cart.id)
in return I am getting this,
[#<SubQuantity:0x007fbbdc046d08
id: 4,
sub_quantity: 1,
product_id: 4,
cart_id: 6,
created_at: Sun, 22 May 2016 11:03:55 UTC +00:00,
updated_at: Sun, 22 May 2016 11:03:55 UTC +00:00>]
and whenever I try to do something like this,
subq.sub_quantity
I am getting this error,
NoMethodError: undefined method sub_quantity for
#<SubQuantity::ActiveRecord_Relation:0x007fbbdc04d838>.
This is not only with sub_quantity, I am getting exact errors for every thing in subq even with subq.id. What is wrong here ? |
| Neo4j, Capistrano deployment, Authentication error Posted: 22 May 2016 04:05 AM PDT I want to deploy a Rails application, using Neo4jrb, to production with Capistrano. During deployment the following error shows up: DEBUG [5a528d81] Finished in 0.057 seconds with exit status 0 (successful). INFO [acd66fd5] Running /usr/local/bin/chruby-exec 2.3.0 -- bundle exec rake assets:precompile as deploy@46.101.153.252 DEBUG [acd66fd5] Command: cd /home/deploy/projects/larp-tool/releases/20160522103925 && ( export RAILS_ENV="production" ; /usr/local/bin/chruby-exec 2.3.0 -- bundle exec rake assets:precompile ) DEBUG [acd66fd5] rake aborted! DEBUG [acd66fd5] Neo4j::Server::Resource::ServerException: Expected response code 200 Error for request http://localhost:7474/db/data/, 401 DEBUG [acd66fd5] /home/deploy/projects/larp-tool/shared/bundle/ruby/2.3.0/gems/neo4j-core-6.1.4/lib/neo4j-server/resource.rb:37:in `handle_response_error!' /home/deploy/projects/larp-tool/shared/bundle/ruby/2.3.0/gems/neo4j-core-6.1.4/lib/neo4j-server/resource.rb:32:in `expect_response_code!' /home/deploy/projects/larp-tool/shared/bundle/ruby/2.3.0/gems/neo4j-core-6.1.4/lib/neo4j-server/cypher_session.rb:86:in `initialize_resource' ...
I set the following credentials in neo4.yml: production: type: server_db url: http://username:password@localhost:7474
and also tried: production: type: server_db url: http://localhost:7474 username: username password: password
I set up this credentials with the Neo4j REST Api, and when I run curl on the server everything seems fine: curl http://username:password@localhost:7474/db/data/
So, why is there an error during deployment? |
| How to add calback for gem`s model Posted: 22 May 2016 03:58 AM PDT I have my own app. And I use some gem. This gem has, for example, User model. How I can add my custom callback (after_save) for User model (which defined in gem without and callback for this model)? |
| Purpose of auth-scheme in HTTP Authorization header Posted: 22 May 2016 03:42 AM PDT I have a question regarding the auth-scheme. I stumble across JSON Web Tokens and one of the official page: https://jwt.io/introduction/ They use Authorization: Bearer <token>
In the past, I am familiar with the Authorization: JWT <token> and had assume that was correct until today, I read the official JWT webpage and they used Bearer <token> instead. I was testing the Knock Rails gem: https://github.com/nsarno/knock and with this library, I was able to make a Postman request to my Rails API with random auth-scheme: 
I could even get rid of the auth-scheme completely: 
When I remove my JWT token from the Authorization header, however, it returns 401 Unauthorized response as expected, so I know it's...working? 
So I began to think...is there a purpose to the auth-scheme ? Is a library or web server suppose to honour/respect/enforce the correct usage of auth-scheme in the Authorization header? I came across this Stackoverflow post in my quest for answer: Custom HTTP Authorization Header It showed the official format is: credentials = auth-scheme #auth-param
The example given was even more bizarre: Authorization: FIRE-TOKEN apikey="0PN5J17HBGZHT7JJ3X82", hash="frJIUN8DYpKDtOLCwo//yllqDzg="
I don't know if this qualifies as a programming question. I can blindly follow/use a third party library. What's the purpose of the auth-scheme ? I'm no cryptography/computer security expert. Maybe someone can shed some light on the issue (or maybe non-issue?) ? |
| Rspec Failure - NameError: uninitialized constant Faker Posted: 22 May 2016 03:35 AM PDT I'm facing this Failures: in Rspec - with Mongodb as database and devise for user management. Couldn't understand whats the issue. with this command bundle exec rspec spec/models/user_spec.rb FFFF Failures: 1) User Failure/Error: email { Faker::Internet.email } NameError: uninitialized constant Faker # ./spec/factories/users.rb:3:in `block (3 levels) in <top (required)>' # ./spec/models/user_spec.rb:19:in `block (2 levels) in <top (required)>' 2) User Failure/Error: email { Faker::Internet.email } NameError: uninitialized constant Faker # ./spec/factories/users.rb:3:in `block (3 levels) in <top (required)>' # ./spec/models/user_spec.rb:19:in `block (2 levels) in <top (required)>' 3) User Failure/Error: email { Faker::Internet.email } NameError: uninitialized constant Faker # ./spec/factories/users.rb:3:in `block (3 levels) in <top (required)>' # ./spec/models/user_spec.rb:19:in `block (2 levels) in <top (required)>' 4) User Failure/Error: email { Faker::Internet.email } NameError: uninitialized constant Faker # ./spec/factories/users.rb:3:in `block (3 levels) in <top (required)>' # ./spec/models/user_spec.rb:19:in `block (2 levels) in <top (required)>' Finished in 0.00478 seconds (files took 2.1 seconds to load) 4 examples, 4 failures Failed examples: rspec ./spec/models/user_spec.rb:23 # User rspec ./spec/models/user_spec.rb:24 # User rspec ./spec/models/user_spec.rb:25 # User rspec ./spec/models/user_spec.rb:26 # User
with /spec/models/user_spec.rb require 'spec_helper' describe User do before { @user = FactoryGirl.build(:user)} subject { @user } it { should respond_to(:email) } it { should respond_to(:password) } it { should respond_to(:password_confirmation) } it { should be_valid } end
and spec/factories/users.rb FactoryGirl.define do factory :user do email { Faker::Internet.email } password "12345678" password_confirmation "12345678" end end
Gemfile source 'https://rubygems.org' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '4.2.4' # Use SCSS for stylesheets gem 'sass-rails', '~> 5.0' # Use Uglifier as compressor for JavaScript assets gem 'uglifier', '>= 1.3.0' # Use CoffeeScript for .coffee assets and views gem 'coffee-rails', '~> 4.1.0' # See https://github.com/rails/execjs#readme for more supported runtimes # gem 'therubyracer', platforms: :ruby # Use jquery as the JavaScript library gem 'jquery-rails' # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks # gem 'turbolinks' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder # gem 'jbuilder', '~> 2.0' # bundle exec rake doc:rails generates the API under doc/api. gem 'sdoc', '~> 0.4.0', group: :doc gem 'mongoid', '~> 5.1.0' #Api gems gem 'active_model_serializers' # Use ActiveModel has_secure_password # gem 'bcrypt', '~> 3.1.7' # Use Unicorn as the app server # gem 'unicorn' # Use Capistrano for deployment # gem 'capistrano-rails', group: :development group :development, :test do # Call 'byebug' anywhere in the code to stop execution and get a debugger console gem 'byebug' gem "factory_girl_rails" gem 'ffaker' end group :development do # Access an IRB console on exception pages or by using <%= console %> in views gem 'web-console', '~> 2.0' # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring gem 'spring' end group :test do gem "rspec-rails" end gem "devise"
|
| Error while executing shell script of copiying a directory in ruby if the directory is having a space in it Posted: 22 May 2016 04:12 AM PDT Lets say I have a directory with name 'test folder' and when I tried to make a copy of it using ruby script it threw an error. Here is what I tried: irb(main):001:0>`cp -R test\ folder folder`
Output:
usage: cp [-R [-H | -L | -P]] [-fi | -n] [-apvX] source_file target_file cp [-R [-H | -L | -P]] [-fi | -n] [-apvX] source_file ... target_directory => ""
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| Heroku logs confirm an email is being sent, but emails do not show up in mail box (production only) Posted: 22 May 2016 03:56 AM PDT After submitting a form in the development environment, the application sends an email to my email address. In the production environment, Heroku logs are reporting the email is being sent, but when I check the mailbox the email is not there. Here is my configuration: application.yml GMAIL_USERNAME: "christopherpelnar@gmail.com" GMAIL_PASSWORD: "sevenmississippi"
user_mailer.rb class UserMailer < ApplicationMailer default from: "christopherpelnar@gmail.com" def customer_email(message) @message = message mail(to: "christopherpelnar@gmail.com", subject: "Message from your website" ) end end
messages_controller.rb def create @message = Message.new(message_params) if @message.save UserMailer.customer_email(@message).deliver_now redirect_to '/message_sent' else redirect_to '/' end end
production.rb config.action_mailer.default_url_options = { :host => 'stormy-wildwood-29407.herokuapp.com' } config.action_mailer.perform_deliveries = true config.action_mailer.raise_delivery_errors = false config.action_mailer.default :charset => "utf-8" config.action_mailer.smtp_settings = { address: "smtp.gmail.com", port: 587, domain: "gmail.com", authentication: "plain", enable_starttls_auto: true, user_name: ENV["GMAIL_USERNAME"], password: ENV["GMAIL_PASSWORD"] }
Heroku logs 2016-05-22: UserMailer#customer_email: processed outbound mail in 238.2ms 2016-05-22: Sent mail to christopherpelnar@gmail.com (158.2ms) 2016-05-22: 2016-05-22: Date: Sun, 22 May 2016 09:43:29 +0000 2016-05-22: From: christopherpelnar@gmail.com 2016-05-22: To: christopherpelnar@gmail.com 2016-05-22: Message-ID: <17f4181751_3.mail> 2016-05-22: Subject: Message from your website 2016-05-22: Mime-Version: 1.0 2016-05-22: Content-Type: text/html; 2016-05-22: charset=UTF-8 2016-05-22: Content-Transfer-Encoding: 7bit
The problem is only in production and does not have a problem being sent through localhost:3000 |
| How to fix and test a race-condition in my Rails 4 model Posted: 22 May 2016 07:06 AM PDT I had the following code in my model. Someone rightly pointed out that the make_default! method could cause a race condition: class State < ActiveRecord::Base def make_default! State.update_all(default: false) update!(default: true) end end
because if two people are updating the record at the same time, two State objects could end up being set to default: true. I used this workaround by using ActiveRecord locks: class State < ActiveRecord::Base def make_default! # Prevent race condition using database-level locks. State.transaction do others = State.where.not(id: id).lock(true).first current = State.where(id: id).lock(true).first others.update_all(default: false) unless others.nil? current.update!(default: true) end end end
but someone pointed out that this could cause other potential bugs. I'm wondering what the best way to implement locks would be, as well as how I'd go about testing the model spec (using RSpec)? Any help much appreciated :) thanks! |
| How to upload image using CkEditor and Rails Posted: 22 May 2016 01:48 AM PDT I'v installed this https://github.com/tsechingho/ckeditor-rails lib into my Rails application. I would like to use CkEditor image upload functionality, but i'dont know how to write the backend logic, how to handle request, save file and send a response back to CkEditor to display uploaded image. The CkEditor's configuration is the following: CKEDITOR.replace( 'editor1', { language: 'en', filebrowserImageUploadUrl : "/upload", filebrowserUploadUrl : "/upload", });
Rails function def upload @func_num = params["CKEditorFuncNum"] @ck_editor = params["CKEditor"] render :layout => false end
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| Deploy rails app with capistrano rbenv unicorn Posted: 22 May 2016 02:32 AM PDT I have problem staring unicorn during deploy. The stack trace is the same as if I execute from "app_name"/current directory: bundle exec rails c production deployer@cloud-number-nine:~/qna/current$ bundle exec rails c production [DEPRECATION] the dotenv-deployment gem is deprecated. See https://github.com/bkeepers/dotenv-deployment#readme. /home/deployer/qna/releases/20160521190207/app/serializers/votable_serializer.rb:5:in `<class:VotableSerializer>': undefined method `root=' for VotableSerializer:Class (NoMethodError) from /home/deployer/qna/releases/20160521190207/app/serializers/votable_serializer.rb:2:in `<top (required)>' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `block in require' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in `load_dependency' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:360:in `require_or_load' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:317:in `depend_on' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:233:in `require_dependency' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:472:in `block (2 levels) in eager_load!' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:471:in `each' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:471:in `block in eager_load!' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:469:in `each' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:469:in `eager_load!' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/engine.rb:346:in `eager_load!' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/application/finisher.rb:56:in `each' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/application/finisher.rb:56:in `block in <module:Finisher>' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:30:in `instance_exec' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:30:in `run' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:55:in `block in run_initializers' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:228:in `block in tsort_each' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:431:in `each_strongly_connected_component_from' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:349:in `block in each_strongly_connected_component' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `each' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `call' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:347:in `each_strongly_connected_component' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:226:in `tsort_each' from /home/deployer/.rbenv/versions/2.3.0/lib/ruby/2.3.0/tsort.rb:205:in `tsort_each' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/initializable.rb:54:in `run_initializers' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/application.rb:352:in `initialize!' from /home/deployer/qna/releases/20160521190207/config/environment.rb:5:in `<top (required)>' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `block in require' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in `load_dependency' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/application.rb:328:in `require_environment!' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:142:in `require_application_and_environment!' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:67:in `console' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:39:in `run_command!' from /home/deployer/qna/shared/bundle/ruby/2.3.0/gems/railties-4.2.5/lib/rails/commands.rb:17:in `<top (required)>' from bin/rails:9:in `require' from bin/rails:9:in `<main>'
Capfile: # Load DSL and set up stages require 'capistrano/setup' # Include default deployment tasks require 'capistrano/deploy' require 'capistrano/rbenv' require 'capistrano/bundler' require 'capistrano/rails' require 'capistrano/sidekiq' require 'capistrano3/unicorn' require 'whenever/capistrano' require 'thinking_sphinx/capistrano' Dir.glob('lib/capistrano/tasks/*.rake').each { |r| import r }
deploy.rb # config valid only for current version of Capistrano lock '3.5.0' set :application, 'qna' set :repo_url, 'git@github.com:khataev/qna.git' # Default deploy_to directory is /var/www/my_app_name set :deploy_to, '/home/deployer/qna' set :deploy_user, 'deployer' # Default value for :linked_files is [] set :linked_files, fetch(:linked_files, []).push('config/database.yml', 'config/private_pub.yml', 'config/private_pub_thin.yml', '.env') # Default value for linked_dirs is [] set :linked_dirs, fetch(:linked_dirs, []).push('log', 'tmp/pids', 'tmp/cache', 'tmp/sockets', 'public/system', 'vendor/bundle', 'public/uploads') # rbenv set :rbenv_type, :user # or :system, depends on your rbenv setup set :rbenv_ruby, '2.3.0' set :rbenv_prefix, "RBENV_ROOT=#{fetch(:rbenv_path)} RBENV_VERSION=#{fetch(:rbenv_ruby)} #{fetch(:rbenv_path)}/bin/rbenv exec" # set :rbenv_map_bins, %w(rake gem bundle ruby rails) set :rbenv_roles, :all # default value set :bundle_binstubs, nil namespace :deploy do desc 'Restart application' task :restart do on roles(:app), in: :sequence, wait: 5 do # execute :touch, release_path.join('tmp/restart.txt') invoke 'unicorn:restart' end end after :publishing, :restart end namespace :private_pub do desc 'Start private_pub server' task :start do on roles(:app) do within current_path do with rails_env: fetch(:rails_env) do execute :bundle, 'exec thin -C config/private_pub_thin.yml start' end end end end desc 'Stop private_pub server' task :stop do on roles(:app) do within current_path do with rails_env: fetch(:rails_env) do execute :bundle, 'exec thin -C config/private_pub_thin.yml stop' end end end end desc 'Restart private_pub server' task :restart do on roles(:app) do within current_path do with rails_env: fetch(:rails_env) do execute :bundle, 'exec thin -C config/private_pub_thin.yml restart' end end end end end after 'deploy:restart', 'private_pub:restart' after 'deploy:restart', 'thinking_sphinx:restart'
unicorn/production.rb # paths app_path = '/home/deployer/qna' working_directory "#{app_path}/current" pid "#{app_path}/current/tmp/pids/unicorn.pid" # listen listen '/tmp/unicorn.qna.sock', backlog: 64 # logging stderr_path 'log/unicorn.stderr.log' stdout_path 'log/unicorn.stdout.log' # workers worker_processes 2 # use correct Gemfile on restarts before_exec do |_server| ENV['BUNDLE_GEMFILE'] = "#{app_path}/current/Gemfile" end # preload preload_app true before_fork do |server, _worker| # the following is highly recomended for Rails + "preload_app true" # as there's no need for the master process to hold a connection ActiveRecord::Base.connection.disconnect! if defined?(ActiveRecord::Base) # Before forking, kill the master process that belongs to the .oldbin PID. # This enables 0 downtime deploys. old_pid = "#{server.config[:pid]}.oldbin" if File.exist?(old_pid) && server.pid != old_pid begin Process.kill('QUIT', File.read(old_pid).to_i) rescue Errno::ENOENT, Errno::ESRCH # someone else did our job for us end end end after_fork do |_server, _worker| ActiveRecord::Base.establish_connection if defined?(ActiveRecord::Base) end
votable serializer My opinion that problem lies between rbenv and unicorn, but I'm not shure... |
| how to create alias of table name in Rails ActiveRecords Posted: 22 May 2016 01:56 AM PDT select user_id, max(perception_score) as max, min(perception_score) as min from temp_user_notes group by user_id as t1;
I am trying to convert this sql query in rails active record but having a hard time to create aliases |
| Errors when migrating heroku Posted: 22 May 2016 01:39 AM PDT Im attempting to rake my migrations on my heroku distro. im getting this error: rake aborted! StandardError: An error has occurred, this and all later migrations canceled: PG::UndefinedTable: ERROR: relation "plants" does not exist : ALTER TABLE "images" ADD CONSTRAINT "fk_rails_d5e1aedcb5" FOREIGN KEY ("plant_id") REFERENCES "plants" ("id")
Some of my tables go through, but not this one, im not sure what is even going on here. It works in development, but not in production. Here is my schema file: ActiveRecord::Schema.define(version: 20160521081000) do create_table "appointments", force: :cascade do |t| t.string "task" t.datetime "time" t.datetime "created_at", null: false t.datetime "updated_at", null: false end create_table "categories", force: :cascade do |t| t.string "name" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.integer "user_id" end create_table "cycles", force: :cascade do |t| t.string "title" t.datetime "completed_at" t.boolean "completed" t.integer "tray_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.datetime "due_date" end add_index "cycles", ["tray_id"], name: "index_cycles_on_tray_id" create_table "datalogs", force: :cascade do |t| t.integer "tray_id" t.float "ambcur" t.float "ambmin" t.float "ambmax" t.float "folcur" t.float "folmin" t.float "folmax" t.float "ph" t.float "heatmat" t.float "h202" t.float "tds" t.datetime "created_at", null: false t.datetime "updated_at", null: false end add_index "datalogs", ["tray_id"], name: "index_datalogs_on_tray_id" create_table "events", force: :cascade do |t| t.string "name" t.datetime "created_at", null: false t.datetime "updated_at", null: false end create_table "grows", force: :cascade do |t| t.string "title" t.text "notes" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.integer "category_id" t.integer "user_id" end create_table "images", force: :cascade do |t| t.string "file_id" t.integer "plant_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.string "tray_id" end add_index "images", ["plant_id"], name: "index_images_on_plant_id" create_table "nutrient_calcs", force: :cascade do |t| t.string "product" t.integer "vegtime" t.integer "flowertime" t.float "rezsize" t.string "rezunits" t.boolean "aerstone" t.string "outputunits" t.integer "nutrient_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false end add_index "nutrient_calcs", ["nutrient_id"], name: "index_nutrient_calcs_on_nutrient_id" create_table "nutrients", force: :cascade do |t| t.string "title" t.string "manufacturer" t.float "price" t.string "unit" t.datetime "created_at", null: false t.datetime "updated_at", null: false end create_table "pages", force: :cascade do |t| t.datetime "created_at", null: false t.datetime "updated_at", null: false end create_table "pics", force: :cascade do |t| t.string "title" t.text "description" t.datetime "created_at", null: false t.datetime "updated_at", null: false end create_table "plant_cycles", force: :cascade do |t| t.string "title" t.integer "interval" t.integer "frequency" t.integer "plant_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false end add_index "plant_cycles", ["plant_id"], name: "index_plant_cycles_on_plant_id" create_table "plantdats", force: :cascade do |t| t.float "ambtemp" t.float "foltempcur" t.float "foltempmin" t.float "foltempmax" t.float "ph" t.float "heatmat" t.integer "tds" t.float "h202" t.integer "plant_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.float "ambtempmin" t.float "ambtembmax" end add_index "plantdats", ["plant_id"], name: "index_plantdats_on_plant_id" create_table "plants", force: :cascade do |t| t.string "title" t.text "notes" t.integer "category_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.string "species" t.integer "tray_id" t.integer "species_id" t.integer "user_id" end add_index "plants", ["category_id"], name: "index_plants_on_category_id" add_index "plants", ["tray_id"], name: "index_plants_on_tray_id" add_index "plants", ["user_id"], name: "index_plants_on_user_id" create_table "schedules", force: :cascade do |t| t.integer "schedulable_id" t.string "schedulable_type" t.date "date" t.time "time" t.string "rule" t.string "interval" t.text "day" t.text "day_of_week" t.datetime "until" t.integer "count" t.datetime "created_at" t.datetime "updated_at" end create_table "species", force: :cascade do |t| t.string "name" t.text "description" t.integer "plant_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false end add_index "species", ["plant_id"], name: "index_species_on_plant_id" create_table "tasks", force: :cascade do |t| t.integer "plant_id" t.integer "tray_id" t.string "title" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.datetime "due_date" end add_index "tasks", ["plant_id"], name: "index_tasks_on_plant_id" add_index "tasks", ["tray_id"], name: "index_tasks_on_tray_id" create_table "tray_cycles", force: :cascade do |t| t.string "title" t.integer "tray_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false end add_index "tray_cycles", ["tray_id"], name: "index_tray_cycles_on_tray_id" create_table "trays", force: :cascade do |t| t.string "title" t.text "notes" t.integer "category_id" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.integer "user_id" t.integer "rescap" end add_index "trays", ["category_id"], name: "index_trays_on_category_id" create_table "users", force: :cascade do |t| t.string "email", default: "", null: false t.string "encrypted_password", default: "", null: false t.string "reset_password_token" t.datetime "reset_password_sent_at" t.datetime "remember_created_at" t.integer "sign_in_count", default: 0, null: false t.datetime "current_sign_in_at" t.datetime "last_sign_in_at" t.string "current_sign_in_ip" t.string "last_sign_in_ip" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.integer "user_id" t.string "firstname" t.string "lastname" t.string "username" end add_index "users", ["email"], name: "index_users_on_email", unique: true add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true end
Also, my app gets pushed to Heroku, but when I go to 'sign_up', I get the error from the heroku logs: 2016-05-22T07:53:31.678059+00:00 app[web.1]: ActionView::Template::Error (undefined method `firstname' for #<User:0x007fa667e33798>): 2016-05-22T07:53:31.678049+00:00 app[web.1]: 2016-05-22T07:53:31.678060+00:00 app[web.1]: 25: 2016-05-22T07:53:31.678061+00:00 app[web.1]: 26: <div class="field"> 2016-05-22T07:53:31.678062+00:00 app[web.1]: 27: <%= f.label 'First Name' %><br /> 2016-05-22T07:53:31.678063+00:00 app[web.1]: 28: <%= f.text_field :firstname, autofocus: true, rows: 10, cols: 10, class: 'form-control', placeholder: 'ENTER FIRST NAME' %> 2016-05-22T07:53:31.678064+00:00 app[web.1]: 29: </div> 2016-05-22T07:53:31.678065+00:00 app[web.1]: 30: 2016-05-22T07:53:31.678065+00:00 app[web.1]: 31: <div class="field">
Can anyone help me figure this out? Many thanks :) |
| Angular material not working in Ruby on rails Posted: 22 May 2016 02:51 AM PDT Hi im currently working on a demo app and im currently working on ruby on rails, i want to implement angular material for my front end but when importing angular.js and angular.css like this. <%= stylesheet_link_tag 'application', media: 'all'%> <%= javascript_include_tag 'application', media: 'all'%> and my application.js consist of. //= require jquery //= require jquery_ujs //= require turbolinks //= require_tree . //= require angular-material
and my application.css has. *= require_self *= require_tree . *= require angular-material
when trying to use the sample on angular material button. it only display the text . for example the button. <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <%= stylesheet_link_tag 'application', media: 'all'%> <%= javascript_include_tag 'application', media: 'all'%> <%= csrf_meta_tags %> <title>DEMO RUBY ON RAILS</title> <h2>DEMO RUBY ON RAILS</h2> <p>HELLO <%= @name %></p> <%= link_to('HELLO INDEX RUBY',{:action => 'hello'})%><br/> <%= link_to('HELLO WITH PARAMETERS RUBY',{:action => 'hello', :page =>5, :id=>20})%> <md-button md-no-ink class="md-primary">Primary (md-noink)</md-button </head> <body> </body> </html>
it only display the button with text Primary. it does not display the button itself. 
i really appreciate your answers. thanks |
| rails: autoload files inside engine's lib directory Posted: 22 May 2016 03:04 AM PDT I am working on this rails application with an engine which is sort of sub application adding some more routes to my existing application. The concept is so powerful, thanks to rails. But I am facing this weird challenge to autoload file changes inside my engines lib directory in development mode. Every time I make a change inside app directory of engine be it model or controller , it works flawlessly, but no changes to any files under lib directory get's picked up. Is there a way I can do this ? Thanks for your help. |
| Rails 4.2.1, Using Collections With Partials Causes Items Displayed To Be Repeated Based On Number Of Items Posted: 22 May 2016 12:40 AM PDT I'm running into a weird issue here. I'm running Rails 4.2.1 & I'm using the Rails Crash Course book by Anthony Lewis and am following the instructions outlined in the book. The link for the book instructions are found here via Google Books. So in the instructions he says to move the following code block into a partial called "_post.html.erb" <% @posts.each do |post| %> <h2><%= link_to post.title, post %></h2> <p><i><%= friendly_date post.created_at %></i></p> <p><%= post.body %></p> <p> <%= link_to 'Edit', edit_post_path(post) %> <%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %> </p> <% end %>
He then says that you can run the following code to basically activate the partial. <%= render :partial => 'post', :collection => @posts %> // or the simplified version ... <%= render @posts %>
However when I do this, the items displayed on the page get repeated by the number of items. So in this case, I have 3 items and they get repeated 3 times. I have attached a screenshot. However when the code is not removed into a partial and no collections are being used, then it works fine. In other words, having the code inside the view's "index.html.erb" file, there are no repetitions of the items being displayed. Can anyone help me out with what is going on here? I would really appreciate it! |
| Ruby On Rails - Make text green if there is > Posted: 22 May 2016 02:09 AM PDT So I am learning rails. I am building image-board as my first project. Basically I need to change text color if there is > in text 
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| ActiveRecord::ConnectionNotEstablished for new project Posted: 22 May 2016 05:08 AM PDT I made a wrong choice and now I am sticked at the middle of my project I used ruby 5.0.0rc1, and while I start my project with rubymine I get "ActiveRecord::ConnectionNotEstablished" I also get an error message while I type rake db:create : Gregoires-MacBook-Pro:p1 gregoire$ rake db:create Rake tasks not supported by 'pg' adapter Couldn't create database for {"adapter"=>"pg", "pool"=>5, "timeout"=>5000, "database"=>"pg"} rake aborted! ActiveRecord::Tasks::DatabaseNotSupported: Rake tasks not supported by 'pg' adapter
my database/yml : # SQLite version 3.x # gem install sqlite3 # # Ensure the SQLite 3 gem is defined in your Gemfile # gem 'sqlite3' # default: &default adapter: 'pg' pool: 5 timeout: 5000 development: <<: *default database: 'pg' test: <<: *default database: 'pg' production: <<: *default database: 'pg'
I am newbie with ror , any help will be appreciated (please detail) greg |
| Nginx/Unicorn ignoring Unicorn logging config Posted: 22 May 2016 01:14 AM PDT I have my config setup in nginx to use unicorn, I then have my unicorn config setup to log to /var/log/unicorn/unicorn.log. But for some reason the logs are still showing in /var/log/nginx/access.log instead (with a variety of other access/error files). I've seen some options for setting up logging in nginx directly (as seen below), but it seems like that would be skipping unicorn, which could be relevant. Am I incorrectly setting up my unicorn log files? access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log;
Here are my current config files /etc/nginx/sites-available/rails upstream app { server unix:/var/run/unicorn.sock fail_timeout=0; } server { listen 443 ssl; server_name www.example.org; root /home/rails/source/public; try_files $uri/index.html $uri @app; location @app { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_pass http://app; } # ssl stuff here add_header Strict-Transport-Security max-age=15768000; error_page 500 502 503 504 /500.html; client_max_body_size 4G; keepalive_timeout 10; } server { listen 80; server_name www.example.org www.example2.org; root /home/rails/source/public; try_files $uri/index.html $uri @app; location @app { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_pass http://app; } error_page 500 502 503 504 /500.html; client_max_body_size 4G; keepalive_timeout 10; }
/etc/unicorn.conf listen "unix:/var/run/unicorn.sock" worker_processes 4 user "rails" working_directory "/home/rails/source" pid "/var/run/unicorn.pid" stderr_path "/var/log/unicorn/unicorn.log" stdout_path "/var/log/unicorn/unicorn.log"
/etc/default/unicorn # Change paramentres below to appropriate values and set CONFIGURED to yes. CONFIGURED=yes # Default timeout until child process is killed during server upgrade, # it has *no* relation to option "timeout" in server's config.rb. TIMEOUT=60 # Path to your web application, sh'ld be also set in server's config.rb, # option "working_directory". Rack's config.ru is located here. APP_ROOT=/home/rails/source # Server's config.rb, it's not a rack's config.ru CONFIG_RB=/etc/unicorn.conf # Where to store PID, sh'ld be also set in server's config.rb, option "pid". PID=/var/run/unicorn.pid RAILS_ENV="production" UNICORN_OPTS="-D -c $CONFIG_RB -E $RAILS_ENV" PATH=/usr/local/rvm/rubies/ruby-2.2.2/bin:/usr/local/sbin:/usr/bin:/bin:/sbin:/usr/local/rvm/bin:/usr/local/rvm/gems/ruby-2.2.2@global/bin:/usr/local/rvm/gems/ruby-2.2.2/bin/ export GEM_HOME=/usr/local/rvm/gems/ruby-2.2.2 export GEM_PATH=/usr/local/rvm/gems/ruby-2.2.2:/usr/local/rvm/gems/ruby-2.2.2@global DAEMON=/usr/local/rvm/gems/ruby-2.2.2/bin/unicorn
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| Rails, model method returning array instead of iterating over the results Posted: 21 May 2016 11:41 PM PDT new ruby on rails user here. I have a question about the following few lines of code. First example in view. <% sailing.travelling_parties.each do |party| %> <% party.party_registers.each do |reg| %> <%= reg.user.detailed_user.first_name %> <% end %> <% end %>
When I run it in the in view, i get my expected result which is multiple names printed out. When I move it to the model and change it to the following, Second example, in model. The ** represents what I'm actually trying to accomplish in this entire example. class Sailing < ActiveRecord::Base ... def gather_data self.travelling_parties.each do |party| party.party_registers.each do |reg| reg.user.detailed_user.first_name ** use a variable to count loop iterations ** end end end
Second example, in View <%= sailing.gather_data %>
This is printing out an array filled with the 'travelling_parties' I am trying to iterate over, not what I had expected at all! So, obviously it only loops once regardless of how many names are in the sailing record. Can any shed any light on why this is happening, and how I can get it to work like the first example, without actually putting my business logic in the view? Thanks |
| "undefined method `model_name' for..." error when using nested resources and simple_form, ruby on rails Posted: 21 May 2016 11:49 PM PDT enter code hereI get an "undefined method `model_name' for {:url=>"/possibilities/65/date_events/new"}:Hash" error, when I use simple_form in nested resources.
This is my date_events/new.html.erb: <%= simple_form_for([@possibility, @dateevent, url: new_possibility_date_event_path]) do |f| %>
I once tried this: <%= simple_form_for([@possibility, @dateevent]) do |f| %>
I got this error-message: undefined method `date_events_path' for #<#<Class:0x007ffb4165e138>:0x007ffb42056f78>
My routes: event_possibilities GET /events/:event_id/possibilities(.:format) possibilities#index POST /events/:event_id/possibilities(.:format) possibilities#create new_event_possibility GET /events/:event_id/possibilities/new(.:format) possibilities#new edit_event_possibility GET /events/:event_id/possibilities/:id/edit(.:format) possibilities#edit event_possibility GET /events/:event_id/possibilities/:id(.:format) possibilities#show PATCH /events/:event_id/possibilities/:id(.:format) possibilities#update PUT /events/:event_id/possibilities/:id(.:format) possibilities#update DELETE /events/:event_id/possibilities/:id(.:format) possibilities#destroy events GET /events(.:format) events#index POST /events(.:format) events#create new_event GET /events/new(.:format) events#new edit_event GET /events/:id/edit(.:format) events#edit event GET /events/:id(.:format) events#show PATCH /events/:id(.:format) events#update PUT /events/:id(.:format) events#update DELETE /events/:id(.:format) events#destroy possibility_date_events GET /possibilities/:possibility_id/date_events(.:format) date_events#index POST /possibilities/:possibility_id/date_events(.:format) date_events#create new_possibility_date_event GET /possibilities/:possibility_id/date_events/new(.:format) date_events#new edit_possibility_date_event GET /possibilities/:possibility_id/date_events/:id/edit(.:format) date_events#edit possibility_date_event GET /possibilities/:possibility_id/date_events/:id(.:format) date_events#show PATCH /possibilities/:possibility_id/date_events/:id(.:format) date_events#update PUT /possibilities/:possibility_id/date_events/:id(.:format) date_events#update DELETE /possibilities/:possibility_id/date_events/:id(.:format) date_events#destroy possibilities GET /possibilities(.:format) possibilities#index POST /possibilities(.:format) possibilities#create new_possibility GET /possibilities/new(.:format) possibilities#new edit_possibility GET /possibilities/:id/edit(.:format) possibilities#edit possibility GET /possibilities/:id(.:format) possibilities#show PATCH /possibilities/:id(.:format) possibilities#update PUT /possibilities/:id(.:format) possibilities#update DELETE /possibilities/:id(.:format) possibilities#destroy root GET /
Any advices? Thanks in advance! A possible problem might be, that I have two different nested resources, like this: resources :events do resources :possibilities end resources :possibilities do resources :date_events end
edit: Here is my create action for possibility. It redirects to: redirect_to new_possibility_date_event_path(@possibility) def create @possibility = Possibility.new @possibility.event_id = params[:event_id] if @possibility.save else render 'new' end redirect_to new_possibility_date_event_path(@possibility) end
edit 2: Here is my date_events controller: def new @dateevent = DateEvent.new @datelist = "Test" @date = params[:date] ? Date.parse(params[:date]) : Date.today @first_calendar_day = @date.beginning_of_month.beginning_of_week(:monday) @last_calendar_day = @date.end_of_month.end_of_week(:monday) @weeks = (@first_calendar_day..@last_calendar_day).to_a.in_groups_of(7) end def create @possibility = Possibility.find(params[:possibility]) @datelist = params[:date].split(",") @datelist.each do |date| params[:date_event][:date] = date @dateevent = DateEvent.new(dateevents_params) @dateevent.save end redirect_to kalender_path end end private def dateevents_params params.require(:date_event).permit(:date) end
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| update gem version that is specified in another gem dependency Posted: 21 May 2016 09:53 PM PDT In my Gemfile, I'm including a gem that has a .gemspec that uses the pessimistic operator ~> to specify a version of the gem. However, I need to use a newer version of the gem. In my case I'm using spree 3-0-stable that has activemerchant set to '~> 1.47.0' https://github.com/spree/spree/blob/3-0-stable/core/spree_core.gemspec#L22 but I need use active merchant '~> 1.59.0' I tried to specify version 1.59.0 in my Gemfile but bundle complains with: You have requested: activemerchant ~> 1.59.0 The bundle currently has activemerchant locked at 1.47.0. Try running bundle update activemerchant If you are updating multiple gems in your Gemfile at once, try passing them all to bundle update But the command bundle update activemerchant will only update to 1.47.x. What's the rails-y way of accomplishing this? Aside from forking spree myself and updating the .gemspec? Obviously updates to the activemerchant gem might break the spree gem. But I can test with my app. |
| Swap values and keys in certain places in Ruby? [on hold] Posted: 21 May 2016 08:05 PM PDT I am trying to build a memory game and I need some way to display the "cards" that the player has gotten right. I was thinking about just swaping the keys and values or creating a temporary hash but I can't seem to make either of those work. This is only my first week learning how to code so I know that everything is a mess. Any help would be appreciated. |
| Ruby on Rails acts_as_votable gem Posted: 22 May 2016 05:49 AM PDT I am trying to create a voting system using acts_as_votable gem in Rails 4. I have three nominees to be voted from and I want a voter to choose from any of those three and vote only one nominee.acts_as_votable gem allows voter to vote multiple nominees. How do I restrict to only one nominee? |
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