| Calculation Server Architecture Posted: 20 Jan 2017 07:10 AM PST I have a rails app. This app takes parameters from the users and sends it to what I think would be called a slave application server that runs heavy calculations in Python. This slave server is located on the same physical box and runs a Python "SimpleHTTPServer" (just a basic web server). I set up the slave to receive commands through post requests and run the calculations. Is it appropriate for the python server to receive these requests through GET/POST even though it is on the same box or should I be using another protocol? **note I have looked into rubypython and other direct connectors but I need a separate app server to run calculations. |
| Rails with Webpack Posted: 20 Jan 2017 06:58 AM PST I am using ReactOnRails app and I have node-modules folder with packages installed using npm. How can I make these javascript libaries available in app/assets/javascript/application.js, so I do not have to for example install jquery in my modules and in my Gemfile? This is my webpack config file: /* eslint comma-dangle: ["error", {"functions": "never", "arrays": "only-multiline", "objects": "only-multiline"} ] */ const webpack = require('webpack'); const path = require('path'); const devBuild = process.env.NODE_ENV !== 'production'; const nodeEnv = devBuild ? 'development' : 'production'; const config = { entry: [ 'es5-shim/es5-shim', 'es5-shim/es5-sham', 'babel-polyfill', './app/bundles/Home/startup/registration', ], output: { filename: 'webpack-bundle.js', path: '../app/assets/webpack', }, resolve: { extensions: ['', '.js', '.jsx'], alias: { react: path.resolve('./node_modules/react'), 'react-dom': path.resolve('./node_modules/react-dom'), }, }, plugins: [ new webpack.DefinePlugin({ 'process.env': { NODE_ENV: JSON.stringify(nodeEnv), }, }), ], module: { loaders: [ { test: require.resolve('react'), loader: 'imports?shim=es5-shim/es5-shim&sham=es5-shim/es5-sham', }, { test: /\.jsx?$/, loader: 'babel-loader', exclude: /node_modules/, }, ], }, }; module.exports = config; if (devBuild) { console.log('Webpack dev build for Rails'); // eslint-disable-line no-console module.exports.devtool = 'eval-source-map'; } else { config.plugins.push( new webpack.optimize.DedupePlugin() ); console.log('Webpack production build for Rails'); // eslint-disable-line no-console }
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| Rails form_for route module undefined method Posted: 20 Jan 2017 07:32 AM PST I'm having a issue with scopes. I've defined # routes.rb resources :asientos, module:'asientos' # app/models/asientos/asiento.rb module Asientos class Asiento < ActiveRecord:Base end end # app/controllers/asientos/asientos_controller.rb module Asientos class AsientosController < ApplicationController def new @asiento = Asientos::Asiento.new end end end # app/views/asientos/asientos/new <%= form_for(@asiento) do |f| %> ...
rake routes asientos GET /asientos(.:format) asientos/asientos#index POST /asientos(.:format) asientos/asientos#create new_asiento GET /asientos/new(.:format) asientos/asientos#new edit_asiento GET /asientos/:id/edit(.:format) asientos/asientos#edit asiento GET /asientos/:id(.:format) asientos/asientos#show PATCH /asientos/:id(.:format) asientos/asientos#update PUT /asientos/:id(.:format) asientos/asientos#update DELETE /asientos/:id(.:format) asientos/asientos#destroy
Now whenever the form tries to render, i get undefined method `asientos_asiento_index_path' for #<#<Class:0x000000065b3b40>:0x00000006ba5f30>
I've seen some of the answers like form_for and scopes, rails 3 Module route in Rails with form_for(@object) But none of them present a clear solution, o suggest some kind of patching. Furthermore, form_for now generates asientos_ prefix, and in my controller now i have to rename also params.require(:asientos) to params.require(:asientos_asientos) ... not pretty... Any suggestions (besides undoing namespacing) would be much appreciated. Thanks in advance. |
| Why does my rails not run? Posted: 20 Jan 2017 07:14 AM PST When I run $ rails -server to start a server, there comes an error: Could not find gem 'sqlite3' in any of the gem sources listed in your Gemfile or available on this machine. Does that mean I did not install sqlite3? How can I resolve the issue? |
| Rails, Devise, Capybara, current_user not working properly in create action during test Posted: 20 Jan 2017 07:12 AM PST A user can edit his own content, if a condition is reached. Here is the condition: ng-show="argumentation.user_id == userid"
Everything works as expected, when I visit my page with rails s, however during the test, argumentation.user_id returns nothing. Here is my code When the user presses a button, the create-action gets called: def create @argumentation = Argumentation.create!( title: "Labore et Dolore", content: "Errare humanum est", user_id: current_user.id #<-- Not working during the test. ) end
Here is one of my test: visit "/argumentation#!/overview" click_button "Argumentation erstellen" fill_in "argumentation_title", with: "A Defence of Moral Realism" fill_in "argumentation_content", with: "Russ Shafer-Landau" click_button "Speichern" save_screenshot('screen.png', full: true) click_button "Übersicht" #<-- In test, this button is not there, but should be
I made a screenshot, which shows some further information: It shows the ID of the current user and the Owner-ID of the content. You see both at the top of the image. Outside of the test, the argumentation id is filled with the correct information.  Here is how the current user is retrieved: In an angular-controller: $http.get("/getcurrentuser.json").then(function(data,status,headers,config) { $scope.userid = data.data; });
In rails-controller: def get_current_user @id = 0 if current_user @id = current_user.id end respond_to do |format| format.json { render json: @id} end end
I researched on this issue and some mentioned, that capybara and poltergeist js have sometimes difficulties with the current_user feature of devise. I tried to follow this guide from devise and changed my configuration (you can see it below). I think, one issue may be, that I added this bit of code at the wrong place. I added it below to spec/rails_helper.rb. The guide does not say, where exactly it has to be added. class ActiveRecord::Base mattr_accessor :shared_connection @@shared_connection = nil def self.connection @@shared_connection || retrieve_connection end end # Forces all threads to share the same connection. This works on # Capybara because it starts the web server in a thread. ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection
spec/rails_helper.rb # This file is copied to spec/ when you run 'rails generate rspec:install' ENV['RAILS_ENV'] ||= 'test' require File.expand_path('../../config/environment', __FILE__) # Prevent database truncation if the environment is production abort("The Rails environment is running in production mode!") if Rails.env.production? require 'spec_helper' require 'rspec/rails' require 'devise' require 'capybara/poltergeist' Capybara.javascript_driver = :poltergeist Capybara.default_driver = :poltergeist # Add additional requires below this line. Rails is not loaded until this point! # Requires supporting ruby files with custom matchers and macros, etc, in # spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are # run as spec files by default. This means that files in spec/support that end # in _spec.rb will both be required and run as specs, causing the specs to be # run twice. It is recommended that you do not name files matching this glob to # end with _spec.rb. You can configure this pattern with the --pattern # option on the command line or in ~/.rspec, .rspec or `.rspec-local`. # # The following line is provided for convenience purposes. It has the downside # of increasing the boot-up time by auto-requiring all files in the support # directory. Alternatively, in the individual `*_spec.rb` files, manually # require only the support files necessary. # # Dir[Rails.root.join('spec/support/**/*.rb')].each { |f| require f } # Checks for pending migration and applies them before tests are run. # If you are not using ActiveRecord, you can remove this line. ActiveRecord::Migration.maintain_test_schema! RSpec.configure do |config| # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures config.fixture_path = "#{::Rails.root}/spec/fixtures" config.include Devise::Test::ControllerHelpers, type: :controller config.include Warden::Test::Helpers # If you're not using ActiveRecord, or you'd prefer not to run each of your # examples within a transaction, remove the following line or assign false # instead of true. config.use_transactional_fixtures = false # RSpec Rails can automatically mix in different behaviours to your tests # based on their file location, for example enabling you to call `get` and # `post` in specs under `spec/controllers`. # # You can disable this behaviour by removing the line below, and instead # explicitly tag your specs with their type, e.g.: # # RSpec.describe UsersController, :type => :controller do # # ... # end # # The different available types are documented in the features, such as in # https://relishapp.com/rspec/rspec-rails/docs config.infer_spec_type_from_file_location! # Filter lines from Rails gems in backtraces. config.filter_rails_from_backtrace! # arbitrary gems may also be filtered via: # config.filter_gems_from_backtrace("gem name") config.before(:suite) do DatabaseCleaner.clean_with(:truncation) end config.before(:each) do DatabaseCleaner.strategy = :transaction end config.before(:each, :type => :feature) do DatabaseCleaner.strategy = :truncation end config.before(:each) do DatabaseCleaner.start end config.after(:each) do DatabaseCleaner.clean end end class ActiveRecord::Base mattr_accessor :shared_connection @@shared_connection = nil def self.connection @@shared_connection || retrieve_connection end end # Forces all threads to share the same connection. This works on # Capybara because it starts the web server in a thread. ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection
Login in test: let(:email) { "bob@example.com" } let(:password) { "password123" } before do @user = User.create!(email: email, password: password, password_confirmation: password) end login_as(@user, :scope => :user)
Can someone spot the error? |
| Destroy nested resources from a join table Posted: 20 Jan 2017 06:30 AM PST I have the following case where I need to destroy material objects associated to item_materials coming from project begin require 'bundler/inline' rescue LoadError => e $stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler' raise e end gemfile(true) do source 'https://rubygems.org' gem 'rails', '4.2.7.1' gem 'sqlite3' end require 'active_record' require 'minitest/autorun' require 'logger' Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test) ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:') ActiveRecord::Base.logger = Logger.new(STDOUT) ActiveRecord::Schema.define do create_table :projects, force: true do |t| end create_table :items, force: true do |t| t.integer :project_id end create_table :materials, force: true do |t| end create_table :item_materials, force: true do |t| t.integer :item_id t.integer :material_id end end class Project < ActiveRecord::Base has_many :items, inverse_of: :project accepts_nested_attributes_for :items, allow_destroy: true def clean_up_items items.each do |item| item.item_materials.each do |item_material| item_material.mark_for_destruction item_material.material.mark_for_destruction end end save end end class Item < ActiveRecord::Base belongs_to :project, inverse_of: :items has_many :item_materials, dependent: :destroy, inverse_of: :item accepts_nested_attributes_for :item_materials, allow_destroy: true end class ItemMaterial < ActiveRecord::Base belongs_to :item, inverse_of: :item_materials belongs_to :material, inverse_of: :item_materials accepts_nested_attributes_for :material, allow_destroy: true end class Material < ActiveRecord::Base has_many :item_materials, dependent: :destroy, inverse_of: :material end class ProjectTest < Minitest::Test def test_destroy_item_material_and_material project = Project.create! item = Item.create! project: project material = Material.create! item_material = ItemMaterial.create! item: item, material: material assert project.reload.clean_up_items assert Project.find_by_id(project) assert Item.find_by_id(item) assert_nil ItemMaterial.find_by_id(item_material) assert_nil Material.find_by_id(material) end end
Is there a way to accomplish that without manually open a transaction, just setting the right association options? |
| Gem for enumerating an IP range? [duplicate] Posted: 20 Jan 2017 06:22 AM PST This question already has an answer here: I'm looking for a Gem that can take in start IP and an end IP address and give me the IPs in the middle. I've seen 'ipaddress-gem' but this takes an IP and a netmask when you want a range, I want something that gives me IPs between 2 arbitrary IPs. For example give me all the IPs between 127.0.0.1 and 127.0.1.23 for example. Does anything like this actually exist? |
| Embed Public EventBrite Events near me Posted: 20 Jan 2017 06:04 AM PST Is there a way for me to show Public "events in your area" on my web app using Eventbrite's API without an authenticity token? |
| Gmail in browser and rails html emails [on hold] Posted: 20 Jan 2017 05:54 AM PST I have an issue with rails html email into gmail browser: it does not show it but just show 'Message clipped'. In the Mail desctop client email is shown normally with images, styles, etc. Into yandex, mail.ru also no problem. Do you have any ideas how to show html emails into gmail browser? |
| Selenium slow click action only localhost Posted: 20 Jan 2017 05:33 AM PST I am running selenium locally, but it is extremely slow on find and click. test_helper.rb Capybara.register_driver :selenium do |app| Capybara::Selenium::Driver.new(app, browser: :chrome) end
This is a test on my page: feature "dashboard" do include Warden::Test::Helpers scenario "test1", :js => true do visit root_path visit new_user_session_path #any of this are super slow #find("a[href='#{/users/sign_up}']").click #page.find(:css, 'a[href="/users/passsword/new"]').click #page.find(:xpath, "//a[@href='/users/sign_up']").click end
However, the visit action is almost instantly. I've tried another test: feature "dashboard" do include Warden::Test::Helpers scenario "test1", :js => true do visit 'http://www.google.com.uy' page.find(:xpath, "//a[@href='//www.google.com.uy/intl/es-419/about.html?fg=1']").click end
And it worked. How can I find the cause on my site? The new_user_session_path is devise's default template and controller. |
| how to test partial with instance variables Posted: 20 Jan 2017 06:20 AM PST so i need to test a partial. the partial is rendered by specific action, its something like messages box in facebook. my test looks like this: describe 'partials/_partial.js.erb' do it 'displays stuff' do render end end
i run it, and i know it does what i want because i immediately get Failure/Error: if @items.count > 0 ActionView::Template::Error: undefined method `count' for nil:NilClass
i do not need to hear that it is a bad practice to use instance vars in a partial, it is already there and i need to work with it. so how do i set @items here...? UPDATE: controller action looks like this: def controller_method @items = items_method render_version(:partial => "partials/_partial.js.erb") end
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| Loading modal while page is loading and close after done loading Posted: 20 Jan 2017 05:35 AM PST I there a way to load a modal while page is loading and close it when it is done loading? For example, when I click a link: <a href="localhost:3000/users">Stackoverflow</a>
the browser will load and at the same time modal will open. And if browser done loading the modal will close as well. How can I possibly do it? |
| Ruby overriding method from Trie gem - undefined method Posted: 20 Jan 2017 07:11 AM PST I use Trie (https://github.com/tyler/trie) gem in project and love it. But it has one issue that is really anoying. has_key? method returns nil when key is not found instead of false (as every method ending with ? should)
I've tried opening an issue on their GitHub (https://github.com/tyler/trie/issues/26) but no luck. So, reasonable next step - try to override the method. I added this to my project: class Trie alias :old_has_key? :has_key? def has_key?(key) puts "My new Trie has_key" old_has_key?(key) end end
Just to see if I can get away with it. Unfortunately, when I run rails console I get: `<class:Trie>': undefined method `has_key?' for class `Trie' (NameError)
As I found elsewhere, this should work. Any idea why it doesn't? What I'm missing here? Location of trie.rb? Something else? |
| How to put Java Script variable in Erb method? [on hold] Posted: 20 Jan 2017 06:02 AM PST i have set onclick event on button through which i am calling a function otp(email.value) and passing input field email. On scripting side i want to put this email value in erb method.But i didnt found any method to do that.
please help me . my code is
enter image description here |
| Where is in VERTX $VERTX_HOME/conf/langs.properties config location? Posted: 20 Jan 2017 05:02 AM PST I can not find where to place language properties config with VERTX I want to run Rack with Vertx (for rails): here https://github.com/isaiah/jubilee/wiki/Running-as-vertx-module it suggests to add this line: rackup=isaiah~mod-rack~0.1.1:org.jruby.jubilee.JubileeVerticleFactory .ru=rackup
into the the configuration file: $VERTX_HOME/conf/langs.properties
But i can't find it... |
| recommendation engine in ruby on rails Posted: 20 Jan 2017 05:05 AM PST I would like to have a recommendation functionality for my Rails web-app. In particular, I want to recommend a profile to other users. Is there an engine/gem for this purpose in Rails? If not, where should I start to build it? can I use python Or Machine learning and how? Thank you. |
| Rails and Docker for large web apps [on hold] Posted: 20 Jan 2017 04:33 AM PST I'm currently working on a Rails webapp, never been in production, it would give to the users some geolocated information, so a large number of request per seconds.. I recently discovered that Rails app can runs into Docker. What are the main benefits? Is really important for a large scale application to be into docker (maybe with different coding architecture) or is enough to buy a powerful cloud computing service like AWS and use it? I know a really few features of docker by University Lectures of some previous courses. Is important to understand in order to change (maybe) the app architecture if necessary or choose the right (future) computing service. Thank you. |
| Capistrano - Net::SSH::AuthenticationFailed Posted: 20 Jan 2017 04:21 AM PST I can't figure out how to solve this problem. Capistrano didn't work correctly. So can't deploy my app. Here's the error. $ bundle exec cap staging deploy (Backtrace restricted to imported tasks) cap aborted! Net::SSH::AuthenticationFailed: Authentication failed for user ec2-user@13.112.91.105
Here's config file, named config/deploy.rb # config valid only for Capistrano 3.1 lock '3.5.0' set :application, 'dola' set :repo_url, 'git@ghe.intelligence-dev.com/inolab/eiicon-dola.git' # Default branch is :master # ask :branch, proc { `git rev-parse --abbrev-ref HEAD`.chomp }.call set :branch, 'master' # Default deploy_to directory is /var/www/my_app set :deploy_to, '/var/www/dola' # Default value for keep_releases is 5 # set :keep_releases, 5 set :rbenv_type, :user set :rbenv_ruby, '2.3.2-p217' set :rbenv_map_bins, %w{rake gem bundle ruby rails} set :rbenv_roles, :all set :linked_dirs, %w{bin log tmp/backup tmp/pids tmp/cache tmp/sockets vendor/bundle} role :web, %w{13.112.91.105} namespace :deploy do desc 'Restart application' task :restart do on roles(:app), in: :sequence, wait: 5 do # Your restart mechanism here, for example: # execute :touch, release_path.join('tmp/restart.txt') end end after :publishing, :restart after :restart, :clear_cache do on roles(:web), in: :groups, limit: 3, wait: 10 do # Here we can do anything such as: # within release_path do # execute :rake, 'cache:clear' # end end end end
And here's config/deploy/staging.rb Simple Role Syntax # ================== # Supports bulk-adding hosts to roles, the primary server in each group # is considered to be the first unless any hosts have the primary # property set. Don't declare `role :all`, it's a meta role. role :app, %w{ec2-user@13.112.91.105} role :web, %w{ec2-user@13.112.91.105} # Extended Server Syntax # ====================== # This can be used to drop a more detailed server definition into the # server list. The second argument is a, or duck-types, Hash and is # used to set extended properties on the server. server '13.112.91.105', user: 'ec2-user', roles: %w{web app}, my_property: :my_value # Custom SSH Options # ================== set :stage, :staging set :rails_env, 'staging' server '13.112.91.105', user: 'ec2-user', roles: %w{web app} set :ssh_options, { keys: [File.expand_path('~/.ssh/id_rsa_ec2.pem)')] }
Anyone, please! |
| How to implement a check box in the index page Posted: 20 Jan 2017 03:47 AM PST I have a index page that lists all the homes.I have a Boolean field called active for the homes.We want have a check box on the index page so that a user can check the homes he want to activate.How can this be done?? <div style="margin-top:25px; margin-bottom:150px;"> <div class="container"> <div class="row"> <div class="col-md-2"> <ul class="sidebar-list"> <li class="sidebar-item"><%= link_to "Homes", homes_path, class:"sidebar-link active"%></li> </ul> </div> <div class="col-md-10"> <div class="panel panel-default"> <div class="panel-heading" style="background-color:#6dae4e;"> Homes(<%= @homes.length %>) </div> <div class="panel-body"> <% @homes.each do |home| %> <div class="row"> <div class="col-md-2"> <%= image_tag home.home_photos[0].image.url if home.home_photos.length > 0 %> </div> <div class="col-md-2"> <h4><%= link_to home.name, home %></h4> </div> <div class="col-md-3 right"> <%= link_to "Edit", edit_home_path(home), class: "btn btn-green"%> </div> </div> <hr/> <% end %> </div> </div> </div> </div> </div>
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| error in start a server in ruby on rails Posted: 20 Jan 2017 03:30 AM PST when i want to start rails local server an error come : DL is deprecated, please use Fiddle Expected string default value for '--rc'; got false (boolean) create create README.rdoc create Rakefile create config.ru create .gitignore create Gemfile create app create app/assets/javascripts/application.js create app/assets/stylesheets/application.css create app/controllers/application_controller.rb create app/helpers/application_helper.rb create app/views/layouts/application.html.erb create app/assets/images/.keep create app/mailers/.keep create app/models/.keep create app/controllers/concerns/.keep create app/models/concerns/.keep create bin create bin/bundle create bin/rails create bin/rake create config create config/routes.rb create config/application.rb create config/environment.rb create config/environments create config/environments/development.rb create config/environments/production.rb create config/environments/test.rb create config/initializers create config/initializers/backtrace_silencers.rb create config/initializers/filter_parameter_logging.rb create config/initializers/inflections.rb create config/initializers/mime_types.rb create config/initializers/secret_token.rb create config/initializers/session_store.rb create config/initializers/wrap_parameters.rb create config/locales create config/locales/en.yml create config/boot.rb create config/database.yml create db create db/seeds.rb create lib create lib/tasks create lib/tasks/.keep create lib/assets create lib/assets/.keep create log create log/.keep create public create public/404.html create public/422.html create public/500.html create public/favicon.ico create public/robots.txt create test/fixtures create test/fixtures/.keep create test/controllers create test/controllers/.keep create test/mailers create test/mailers/.keep create test/models create test/models/.keep create test/helpers create test/helpers/.keep create test/integration create test/integration/.keep create test/test_helper.rb create tmp/cache create tmp/cache/assets create vendor/assets/javascripts create vendor/assets/javascripts/.keep create vendor/assets/stylesheets create vendor/assets/stylesheets/.keep run bundle install DL is deprecated, please use Fiddle
after a few min an error come and say to install json gem and when i want install json gem an error come.what can i do to run server . ( my rails version :2.0.0 ruby version:2.0.0 ) |
| Couldn't find ProjectSession with 'id'= Posted: 20 Jan 2017 05:53 AM PST Here i have a project to which i am adding a session and for a project session i am trying to add task. i am able to create project and add project session for project but when i am trying to add task for session using project_sessions_id i am getting error Couldn't find ProjectSession with 'id'= and 'app/controllers/tasks_controller.rb:60:in set_project_session i am able to get the project session id also project_sessions/11 in the url but when i click 'create task' i am getting this error. how can i resolve this? here's what i have done ProjectSessionController: class ProjectSessionsController < ApplicationController before_action :set_project_session, only: [:show, :edit, :update, :destroy] before_action :authenticate_user! before_action :set_project def index @project_sessions = ProjectSession.all end def show @project_sessions = ProjectSession.where(project_id: @project.id).order("created_at DESC") end def new @project_session = ProjectSession.new end def edit end def create @project_session = ProjectSession.new(project_session_params) @project_session.project_id = @project.id #respond_to do |format| if @project_session.save redirect_to @project #format.html { redirect_to @project_session, notice: 'Project session was successfully created.' } #format.json { render :show, status: :created, location: @project_session } else format.html { render :new } format.json { render json: @project_session.errors, status: :unprocessable_entity } end
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