| Error RSpec ActionController::UrlGenerationError with Rails Posted: 11 May 2016 07:05 AM PDT I'm getting an error when trying to test a Rails Controller with RSpec. It's a double nested route and I'm trying to figure out the right syntax but hadn't had many luck yet. The error that I'm getting is Failure/Error: get :index, {category_id: category.to_param, id: system.to_param} ActionController::UrlGenerationError: No route matches {:action=>"index", :category_id=>"220", :controller=>"reviews", :id=>"166"} # ./spec/controllers/reviews_controller_spec.rb:11:in `block (3 levels) in <top (required)>'
I've made the same test for the system controller which works fine. The webpage works fine as well. No errors with that (just this error with testing). Here is what the RSpec test look like: require 'rails_helper' RSpec.describe ReviewsController, type: :controller do let (:category) { create(:category) } let (:system) { create(:system) } let (:reviews) { create_list(:review, 3, category: category, system: system) } describe "GET index" do it "assigs all reviews to an instance var called @reviews" do get :index, {category_id: category.to_param, id: system.to_param} expect(assigns(:reviews)).to eq reviews end it "assigns all the reviews to an var called @system" do get :index, system_id: system.to_param expect(assigns(:system)).to eq system end end describe "system scope" do before { create(:review) } it "only assigns reviews index in the current system" do get :index, {category_id: category.to_param, id: system.to_param} expect(assigns(:reviews)).to eq reviews end end end
This is the Controller that it's testing: class ReviewsController < ApplicationController def index @system = System.find(params[:system_id]) @reviews = @system.reviews respond_to do |format| format.html format.json { render json: { system: @system, reviews: @reviews } } end end def show @system = System.find(params[:system_id]) @review = @system.reviews end end
And these are the routes: class ReviewsController < ApplicationController def index @system = System.find(params[:system_id]) @reviews = @system.reviews respond_to do |format| format.html format.json { render json: { system: @system, reviews: @reviews } } end end def show @system = System.find(params[:system_id]) @review = @system.reviews end end
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| Using Carrierwave to get Fog filename Posted: 11 May 2016 07:00 AM PDT I'm consolidating two Carrierwave uploaders into one, so I need to move the generated files over. For this I need the Fog filenames, but I can't find them in the Uploader instance. I'm currently using the following pseudocode: [Model].find_each do |instance| old_filename = instance.[old_uploader].[size].store_path.split("/")[0..-2].join("/") + "/" + instance.[old_uploader].[size].path.split("/").last old_file = directory.files.get(filename) new_filename = instance.[new_uploader].[size].store_path.split("/")[0..-2].join("/") + "/" + instance.[new_uploader].[size].path.split("/").last file.copy(directory_name, new_filename) #file.destroy end
But it seems crazy to me that the Fog filename wouldn't be stored in the Uploader instance. I'm using the Rackspace adapter rather than AWS. Is there a way of getting the filename without going round the houses? |
| undefined method `attributes_builder' for Admin:Module Posted: 11 May 2016 06:57 AM PDT Trying to open /admin (Administrate gem) and it raise this error: undefined method `attributes_builder' for Admin:Module
I get this error after sign in as admin. |
| Jquery - Identify if radio button value has not changed Posted: 11 May 2016 07:12 AM PDT Is it possible to identify if the value of radio button has not changed? Currently I am trying to change the confirmation message of submit button on button changed, and do not want any message if the value has not changed. I have something like this now: $('input[type="radio"]').change(function() { var selected = $('input:checked[type="radio"]').val(); if(selected == 'true') { $("#submit_button").data("confirm", "foo"); } else if(selected == 'false') { $('#fee').hide(); $("#submit_button").data("confirm", "bar"); }
This will change confirm message to foo if button selected is true, and bar if button selected is false. However, what if I want to return nothing (no message), if radio button by default is true, and selected is true? |
| Ecape only single backslash and leave double backslashes Posted: 11 May 2016 07:05 AM PDT I have scenario to escape single backslash in string, but it can also contain double backslashes too. "<p> \\$%&;ñá< ></p>\r\n"
To "<p> \\$%&;ñá< ></p>\\r\\n"
How do I do this in ruby. please note I m keeping the existing double '\' intact. Thanks |
| Rails app with puma on Ubuntu server freezes after a while Posted: 11 May 2016 07:04 AM PDT I've mounted an Ubuntu Server VM to host my app. The app works perfectly after I start it. After a while of inactivity (around 5 min with no requests) the app stops responding when I send requests to it. The server logs: Started GET "/" for 190.104.243.172 at 2016-05-11 13:22:46 +0000
And nothing more. It should log: Started GET "/" for 190.104.243.172 at 2016-05-11 13:22:46 +0000 Processing by DashboardController#root as HTML Completed 401 Unauthorized in 0ms (ActiveRecord: 0.0ms) Started GET "/users/sign_in" for 190.104.243.172 at 2016-05-11 13:24:16 +0000 ...
It's like it's not processing the request once it gets it. This is my puma.rb config file threads_count = Integer(ENV['MAX_THREADS'] || 16) threads threads_count, threads_count workers 1 preload_app! rackup DefaultRackup port ENV['PORT'] || 3000 environment ENV['RACK_ENV'] || 'development' on_worker_boot do ActiveSupport.on_load(:active_record) do ActiveRecord::Base.establish_connection end end before_fork do ActiveRecord::Base.connection_pool.disconnect! end
If I change the number of workers to 2 for example, the first request after 5 minutes works. If I then wait 5 more minutes, it freezes. So definitely must be something with workers hanging or not loading properly. |
| Capistrano/Sidekiq task not working Posted: 11 May 2016 06:29 AM PDT I am using rails 4.0 and ruby 2.3. I am using following gems for capscript. capistrano (3.4.0) capistrano-bundler (1.1.4) capistrano-rails (1.1.5)
I am using capistrano/sidekiq module for running sidekiq related tasks. When I am running cap staging sidekiq:start
I get the following error: cap aborted! SSHKit::Runner::ExecuteError: Exception while executing as deploy@10.50.11.190: sidekiq exit status: 1 sidekiq stdout: Nothing written sidekiq stderr: Nothing written SSHKit::Command::Failed: sidekiq exit status: 1 sidekiq stdout: Nothing written sidekiq stderr: Nothing written
Below is the command which failed on running the above task. cd /opt/optimus_apps/merchant_tracking/current && /usr/bin/env sidekiq --index 0 --pidfile /opt/optimus_apps/merchant_tracking/shared/server/tmp/pids/sidekiq-0.pid -- environment staging --logfile /opt/optimus_apps/merchant_tracking/shared/server/log/sidekiq.log --config /opt/optimus_apps/merchant_tracking/shared/server/config/sidekiq.yml --daemon
I tried running the above command directly on the staging server with a small change and it worked. I ran the following command. cd /opt/optimus_apps/merchant_tracking/current/server && /usr/bin/env sidekiq --index 0 --pidfile /opt/optimus_apps/merchant_tracking/shared/server/tmp/pids/sidekiq-0.pid --environment staging --logfile /opt/optimus_apps/merchant_tracking/shared/server/log/sidekiq.log --config /opt/optimus_apps/merchant_tracking/shared/server/config/sidekiq.yml --daemon
I changed the rails path from /opt/optimus_apps/merchant_tracking/current --> /opt/optimus_apps/merchant_tracking/current/server
The problem is my rails app lies inside current/server folder. So my question is how can I make sidekiq task to pick current/server folder rather than the current folder? Thanks in advance. |
| Modify the lastest posts Posted: 11 May 2016 06:21 AM PDT I'm new in rails and I'm trying to build a web app, but I encounter the limits of my abilities. I have a classic app with user who have posts, and to put this post in public, I create a model and a controller Online. That I'm trying to do now, It's to change the boolean :push(from Online) in false if a new Online is created with the same post_id as before. So if I push again my post 2, the previews Online associated with the post 2 will update their :push in false. Well, if you have any ideas about that, let me know ! Thanks My code = Controllers: class OnlinesController < ApplicationController before_action :authenticate_user! before_action :set_post before_action :owned_online, only: [:new, :edit, :update] before_action :set_online def new @online = current_user.onlines.build @online.post_id = @post.id @online.user_id = current_user.id end def create @online = @post.onlines.create(online_params) @online.user_id = current_user.id @online.post_id = @post.id if @online.save if @online.portion <= 1 @online.update(push: false) flash[:success] = 'Veuillez indiquer le nombre de parts disponibles ' redirect_to root_path else @online.update(push: true) @online.update(pushed_at: Time.zone.now) flash[:success] = 'Votre post est en ligne !' redirect_to root_path end else render 'new' end end def show end def update if @onlines.update(online_params) if @online.push == false if @online.portion <= 1 @online.update(push: false) flash[:success] = 'Veuillez indiquer le nombre de parts disponibles ' redirect_to root_path else @online.update(push: true) flash[:success] = 'Votre post a bien été pushé !' redirect_to root_path end end else @user.errors.full_messages flash[:error] = @user.errors.full_messages render :edit end end private def online_params params.require(:online).permit(:user_id, :post_id, :prix, :portion, :push, :pushed_at) end def owned_online @post = Post.find(params[:post_id]) unless current_user == @post.user flash[:alert] = "That post doesn't belong to you!" redirect_to :back end end def set_post @post = Post.find_by(params[:post_id]) end def set_online @post = Post.find(params[:post_id]) @online = Online.find_by(params[:id]) end end
Posts : class PostsController < ApplicationController before_action :authenticate_user! before_action :set_post, only: [:show, :edit, :update, :destroy] before_action :set_online before_action :owned_post, only: [:edit, :update, :destroy] # GET /posts # GET /posts.json def index @posts = Post.push_posts end # GET /posts/1 # GET /posts/1.json def show end # GET /posts/new def new @post = current_user.posts.build end # GET /posts/1/edit def edit end # POST /posts # POST /posts.json def create @post = current_user.posts.build(post_params) respond_to do |format| if @post.save format.html { redirect_to @post, notice: 'Post was successfully created.' } format.json { render :show, status: :created, location: @post } else format.html { render :new } format.json { render json: @post.errors, status: :unprocessable_entity } end end end # PATCH/PUT /posts/1 # PATCH/PUT /posts/1.json def update respond_to do |format| if @post.update(post_params) format.html { redirect_to @post, notice: 'Post was successfully updated.' } format.json { render :show, status: :ok, location: @post } else format.html { render :edit } format.json { render json: @post.errors, status: :unprocessable_entity } end end end # DELETE /posts/1 # DELETE /posts/1.json def destroy @post.destroy respond_to do |format| format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' } format.json { head :no_content } end end private # Use callbacks to share common setup or constraints between actions. def set_post @post = Post.find(params[:id]) end # Never trust parameters from the scary internet, only allow the white list through. def post_params params.require(:post).permit(:user_id, :title, :description, :image, ingredients_attributes: [:id, :name, :_destroy]) end def owned_post unless current_user == @post.user flash[:alert] = "That post doesn't belong to you!" redirect_to root_path end end def set_online @onlines = Online.find_by(params[:id]) end end
Models class Online < ActiveRecord::Base belongs_to :post belongs_to :user scope :push, ->{ where(push: true).order("pushed_at DESC") } end
class Post < ActiveRecord::Base belongs_to :user has_many :onlines, dependent: :destroy scope :push_posts, lambda { joins(:onlines).merge(Online.push) } has_many :ingredients, dependent: :destroy accepts_nested_attributes_for :ingredients, reject_if: :all_blank, allow_destroy: true has_many :comments validates :image, presence: true has_attached_file :image, styles: { medium: "300x300#"}, default_url: "/images/:style/missing.png" validates_attachment_content_type :image, content_type: /\Aimage\/.*\Z/ end
& finaly, the view to display the index of post : <div class="row"> <%- @posts.each do |post|%> <%- if post.onlines.last.push == true %> <div class="post"> <div class="form-group text-center"> <h3> <%=post.title%></h3> </div> <p> Posted by : <%= link_to post.user.pseudo, profile_path(post.user.pseudo) %>, <%= time_ago_in_words(post.onlines.last.pushed_at) %> ago </p> <p><%= post.onlines.last.prix %></p> <p><%= post.onlines.last.portion %></p> <div class="image text-center"> <div class="image-border"> <%= link_to (image_tag post.image.url(:medium), class: 'img-responsive'), post_path(post)%> </div> </div> </div> <% end %> <%end%> </div> </div> </div>
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| Rails - Can't create a record that has an attribute with the same name of the class Posted: 11 May 2016 06:18 AM PDT I'm having troubles trying to create (or even update) a database record, because both the parent class name and the name of an attribute are equal. I'm using a consolidated database, so I can't alter the tables. I have a class Period with an attribute 'period'. One period has many tax scales. #period model has_many :tax_scales, foreign_key: 'period', primary_key: 'period' #tax_scale model belongs_to :period, foreign_key: :period, primary_key: :period
So, when I use this in my tax_scale view: #new.html.haml = f.label :period = f.number_field :period
I get this error: Period(#97477176) expected, got String(#8598408) My controller params are: params.require(:tax_scale).permit(:minimum, :maximum, ..., :period)
How can I edit (or create) a tax_scale record succesfully? |
| Business Entity in Rails? Or How to separate that from models? Posted: 11 May 2016 06:29 AM PDT I have a User Model and it has a method like checkAge. Now I don't want this in the User model. I want User model to be clean. SO where should I put the checkAge method. |
| Failed to recognize type of 'location'. It will be treated as String Posted: 11 May 2016 06:51 AM PDT I'm trying to use the gem activerecord-postgis-adapter and when i try to execute this code : require 'active-record' require 'pg' require 'active record-postgis-adapter' class Place < ActiveRecord::Base record = Place.find(1) line = record.location puts line.srid end
srid is a method of activerecord-postgis-adapter and here i'm trying to display the srid of my geographical column (location) but the console keeps telling me Failed to recognize type of 'location'. It will be treated as String.. |
| How to edit values from table in place (tried with x-editable) Posted: 11 May 2016 06:10 AM PDT I have a team model with fields game1, game2, game3, game4, game5 (all this fields have default value 0). When I display each of them in view I would like to change this default value. Later when I change this values in last column in my view I will sum all this values. Question: How should I edit default values and what is the best way to do it? application.js //= require editable/rails
application.css.scss @import "editable/rails"
teams.js $(document).ready(function() { $('.editable').editable() });
teams_controller.rb class TeamsController < ApplicationController helper_method :xeditable? def xeditable? object = nil current_team.xeditable? end def current_team @team = Team.find(team_params) end private def team_params params.require(:team).permit(:name, :game1, :game2, :game3, :game4, :game5) end end
teams/index.html.erb <% @teams.each do |team| %> <tr> <td><%= team.name %></td> <td><%= editable team, :game1 %></td> <td><%= editable team, :game2 %></td> <td><%= editable team, :game3 %></td> <td><%= editable team, :game4 %></td> <td><%= editable team, :game5 %></td> </tr> <% end %>
NOTE: When I made editable in view like this <%= editable team, :game3 %>, I'm getting error: param is missing or the value is empty: team How should I make that this editable in place works? Or there is better solution? |
| link with ruby code and javascript Posted: 11 May 2016 06:28 AM PDT I'm building an application using ruby on rails for the backend and js, ajax for the front end. In a html.erb file that I created, to listed all the elements of a certain "event", I implemented some ruby code into the html which it was fine... but I came up with this page that it has been created for someone else in ajax... All I want to do is to put a link that redirects me on anoter page... For my file I used this line of code to redirect me on the page I want <a href='/events/<%= event.id %>'>Click for details...</a>
How can I do the same in the ajax script? var $newDiv = $(html);
I would like to append to this $newDiv the link I showed before or something equivalent... How can I do it? I hope my question is clear |
| Désactivate the oldest post Posted: 11 May 2016 05:34 AM PDT I'm new in rails and I'm trying to build a web app, but I encounter the limits of my abilities. I have a classic app with user who have posts, and to put this post in public, I create a model and a controller Online. That I'm trying to do now, It's to change the boolean :push(from Online) in false if a new Online is created with the same post_id as before. So if I push again my post 2, the previews Online associated with the post 2 will update their :push in false. Well, if you have any ideas about that, let me know ! Thanks My code = Controllers: class OnlinesController < ApplicationController before_action :authenticate_user! before_action :set_post before_action :owned_online, only: [:new, :edit, :update] before_action :set_online def new @online = current_user.onlines.build @online.post_id = @post.id @online.user_id = current_user.id end def create @online = @post.onlines.create(online_params) @online.user_id = current_user.id @online.post_id = @post.id if @online.save if @online.portion <= 1 @online.update(push: false) flash[:success] = 'Veuillez indiquer le nombre de parts disponibles ' redirect_to root_path else @online.update(push: true) @online.update(pushed_at: Time.zone.now) flash[:success] = 'Votre post est en ligne !' redirect_to root_path end else render 'new' end end def show end def update if @onlines.update(online_params) if @online.push == false if @online.portion <= 1 @online.update(push: false) flash[:success] = 'Veuillez indiquer le nombre de parts disponibles ' redirect_to root_path else @online.update(push: true) flash[:success] = 'Votre post a bien été pushé !' redirect_to root_path end end else @user.errors.full_messages flash[:error] = @user.errors.full_messages render :edit end end private def online_params params.require(:online).permit(:user_id, :post_id, :prix, :portion, :push, :pushed_at) end def owned_online @post = Post.find(params[:post_id]) unless current_user == @post.user flash[:alert] = "That post doesn't belong to you!" redirect_to :back end end def set_post @post = Post.find_by(params[:post_id]) end def set_online @post = Post.find(params[:post_id]) @online = Online.find_by(params[:id]) end end
Posts : class PostsController < ApplicationController before_action :authenticate_user! before_action :set_post, only: [:show, :edit, :update, :destroy] before_action :set_online before_action :owned_post, only: [:edit, :update, :destroy] # GET /posts # GET /posts.json def index @posts = Post.push_posts end # GET /posts/1 # GET /posts/1.json def show end # GET /posts/new def new @post = current_user.posts.build end # GET /posts/1/edit def edit end # POST /posts # POST /posts.json def create @post = current_user.posts.build(post_params) respond_to do |format| if @post.save format.html { redirect_to @post, notice: 'Post was successfully created.' } format.json { render :show, status: :created, location: @post } else format.html { render :new } format.json { render json: @post.errors, status: :unprocessable_entity } end end end # PATCH/PUT /posts/1 # PATCH/PUT /posts/1.json def update respond_to do |format| if @post.update(post_params) format.html { redirect_to @post, notice: 'Post was successfully updated.' } format.json { render :show, status: :ok, location: @post } else format.html { render :edit } format.json { render json: @post.errors, status: :unprocessable_entity } end end end # DELETE /posts/1 # DELETE /posts/1.json def destroy @post.destroy respond_to do |format| format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' } format.json { head :no_content } end end private # Use callbacks to share common setup or constraints between actions. def set_post @post = Post.find(params[:id]) end # Never trust parameters from the scary internet, only allow the white list through. def post_params params.require(:post).permit(:user_id, :title, :description, :image, ingredients_attributes: [:id, :name, :_destroy]) end def owned_post unless current_user == @post.user flash[:alert] = "That post doesn't belong to you!" redirect_to root_path end end def set_online @onlines = Online.find_by(params[:id]) end end
Models class Online < ActiveRecord::Base belongs_to :post belongs_to :user scope :push, ->{ where(push: true).order("pushed_at DESC") } end
class Post < ActiveRecord::Base belongs_to :user has_many :onlines, dependent: :destroy scope :push_posts, lambda { joins(:onlines).merge(Online.push) } has_many :ingredients, dependent: :destroy accepts_nested_attributes_for :ingredients, reject_if: :all_blank, allow_destroy: true has_many :comments validates :image, presence: true has_attached_file :image, styles: { medium: "300x300#"}, default_url: "/images/:style/missing.png" validates_attachment_content_type :image, content_type: /\Aimage\/.*\Z/ end
& finaly, the view to display the index of post : <div class="row"> <%- @posts.each do |post|%> <%- if post.onlines.last.push == true %> <div class="post"> <div class="form-group text-center"> <h3> <%=post.title%></h3> </div> <p> Posted by : <%= link_to post.user.pseudo, profile_path(post.user.pseudo) %>, <%= time_ago_in_words(post.onlines.last.pushed_at) %> ago </p> <p><%= post.onlines.last.prix %></p> <p><%= post.onlines.last.portion %></p> <div class="image text-center"> <div class="image-border"> <%= link_to (image_tag post.image.url(:medium), class: 'img-responsive'), post_path(post)%> </div> </div> </div> <% end %> <%end%> </div> </div> </div>
Thanks for your times !! |
| Auth with todoist API: invalid_grant Posted: 11 May 2016 06:38 AM PDT I'm adding the ability to post todos to my Todist list via a simple app. At the moment I am getting the response "error"=>"invalid_grant" when exchanging my code for an access_token. I'm unsure exactly what 'invalid_grant' is referring too in this context. Other answers I find seem to be regarding various Google APIs. The Todoist API documentation makes no mention of it. The post request for token exchange is: uri = URI('https://todoist.com/oauth/access_token') result = Net::HTTP.post_form(uri, client_id: ENV['TODOIST_CLIENT_ID'], client_secret: ENV['TODOIST_CLIENT_SECRET'], code: params[:code]) json_body = JSON.parse(result.body) # <- prints error
Any help understanding and solving this is much appreciated. Update After reading Takahiko Kawasaki's answer, I have updated the request to the following, but have the same error message. uri = URI('https://todoist.com/oauth/access_token') data = { :client_id => ENV['TODOIST_CLIENT_ID'], :client_secret => ENV['TODOIST_CLIENT_SECRET'], :code => params[:code], :grant_type => 'authorization_code', } result = Net::HTTP.post_form(uri, data) json_body = JSON.parse(result.body)
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| rails pg_config path not found Posted: 11 May 2016 05:16 AM PDT I installed postgresql on my macbook via postgresql Graphical installer (http://www.postgresql.org/download/macosx/). Now I want to configure pg in my rails project but I dont know where can I find pg_conf path. bundle config build.pg --with-pg-config=<path to pg_config>
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| Rails on Nginx + Phusion Passenger: "It looks like Bundler could not find a gem. Maybe you didn't install all the gems that this application needs." Posted: 11 May 2016 05:48 AM PDT I have a Rails app running using Nginx and Phusion Passenger. Everything worked fine for many months, but after the last deploy, I got an error "We're sorry, but something went wrong.". The Nginx log tells this: [ 2016-05-11 13:28:26.5617 17187/7ff504072700 App/Implementation.cpp:303 ]: Could not spawn process for application /home/a4aa2/rails/current: An error occured while starting up the preloader. Error ID: 4153f320 Error details saved to: /tmp/passenger-error-VPT6E4.html Message from application: <p>It looks like Bundler could not find a gem. Maybe you didn't install all the gems that this application needs. To install your gems, please run:</p> <pre class="commands">bundle install</pre> <p>If that didn't work, then the problem is probably caused by your application being run under a different environment than it's supposed to. Please check the following:</p> <ol> <li>Is this app supposed to be run as the <code>a4aa2</code> user?</li> <li>Is this app being run on the correct Ruby interpreter? Below you will see which Ruby interpreter Phusion Passenger attempted to use.</li> </ol> <p>-------- The exception is as follows: -------</p> Could not find mime-types-2.99.1 in any of the sources (Bundler::GemNotFound) ...etc...
My gems seem to be all available: [a4aa2@bellatrix ~]$ cd rails/current/ [a4aa2@bellatrix current]$ bundle Using rake 10.5.0 Using i18n 0.7.0 Using json 1.8.3 ...etc... Bundle complete! 91 Gemfile dependencies, 113 gems now installed. Gems in the groups development and test were not installed. Bundled gems are installed into ./vendor/bundle.
I have no idea how to debug this. The only thing I can think of is re-installing phusion passenger and try again. I'm on a hosted service. Is it possible that there's another Nginx process/installation running that didn't run before, and now things are messed up between those two? |
| How to only let the author of comments edit, update & destroy them? Posted: 11 May 2016 05:06 AM PDT I'm trying to prevent all users being able to edit, update and destroy comments made to posts in my forum. I managed to prevent all users editing the posts, but i can't work out what i need to do to prevent all users editing the comments. I solved the post issue with this before_action in the post controller: before_action :post_owner, only: [:edit, :update, :destroy]
This is my show.html.haml: #post_content %h1= @post.title %p= @post.content #comments %h2 = @post.comments.count Comments = render @post.comments - if user_signed_in? %h3 Reply to thread = render'comments/form' %br/ %hr/ %br - if @post.user_id == current_user.id = link_to "Edit", edit_post_path(@post), class: "button" = link_to "Delete", post_path(@post), method: :delete, data: { confirm: "Are you sure you want to do this?"}, class: "button"
I added a before_action for comments in the post_controller and tried this in the _comment.html.haml: .comment.clearfix .content %p.comment_content= comment.comment %p.comment_author= comment.user.email %br/ %br/ %br/ %br/ - if @comment.user_id == current_user.id = link_to "Edit", edit_post_comment_path(comment.post, comment), class: "button" = link_to "Delete", [comment.post, comment], method: :delete, data: { confirm: "Are you sure?"}, class: "button"
However i receive the following error: undefined method `user_id' for nil:NilClass
I think this is a simple solution but i'm not that experienced with ruby on rails just yet. |
| Rails user customised views/templates with Liquid Posted: 11 May 2016 04:37 AM PDT I require functionality within a white label application to allow user defined templates. Customers should be able to fully customise their own layouts/views for their sites. Think of functionality similar to Shopify's templating engine. I have been using the Shopify templating library called Liquid and its working great for something simple like email templates. However, it's becoming a struggle for me to understand how it will work when fully replacing all my .erb files. Questions: - How will I replace Rails view code (link_to, form_for etc.) in Liquid templates"?
- How can I leverage the Rails routing engine to generate URL's in templates?
- Do I just create hundreds of custom liquid tags to replace all normal Rails helpers?
I have seen some gems on Github that help integrate liquid with Rails but I would prefer only to rely on the Liquid library. Cheers |
| How to search for a nil value using Searchkick? Posted: 11 May 2016 04:30 AM PDT In a Rails 4 app, I have related models Applicant and Trademark, with the latter searchable using Searchkick: class Applicant < ActiveRecord::Base has_many :trademarks end class Trademark < ActiveRecord::Base belongs_to :applicant searchkick end
I'm trying to find instances of Trademark which do not have an Applicant. Using standard ActiveRecord the below query works, and returns the Trademark without an Applicant: Trademark.where(applicant: nil).count (1.7ms) SELECT COUNT(*) FROM "trademarks" WHERE "trademarks"."applicant_id" IS NULL => 1
How can I run the equivalent query with the addition of SearchKick? # these queries run correctly and show that SearchKick is working Trademark.search "*" # => 7 records Trademark.search "*", where: {status: "Removed"} # => 5 records # When trying to search for applicant == nil, the search fails: # this returns 7 records, instead of the 1 expected result Trademark.search "*", where: {applicant: nil} # this returns 0 records, instead of the 1 expected result Trademark.search "*", where: {applicant_id: nil}
How can I use a where clause for a nil value in SearchKick? |
| RoR HTML template to .docx Posted: 11 May 2016 07:16 AM PDT I need to create a .docx file from a HTML template, so I used htmltoword gem. Usage: I added the gem (Gemfile): gem 'htmltoword', '~> 0.5.1' #last version of the gem
I put a route (route.rb): get 'preview' => 'foo#preview'
And in my bar.html.erb I have a link which target's that url: <%= link_to '.docx', preview_path %>
Template (preview.docx.erb): <h1>foobar</h1>
And in the controller (foos_controller.rb): class FoosController < ApplicationController respond_to :docx #other code def preview respond_to do |format| format.docx do render docx: 'foobar', filename: 'preview.docx' end end end end
However, I'm getting an error: ActionController::UnknownFormat How to fix this error? My config:
RoR v4.2.4
Ruby v2.2.3p173
Also, there is an open github issue for this/similar topic.
Update: as @kajalojha mentioned, respond_with / Class-Level respond_to has been removed to an individual gem, so I installed the responders gem, however, I get the same error. |
| Is there a different between self and source in Rails Draper::Decorator? Posted: 11 May 2016 06:10 AM PDT I'm using Draper::Decorator gem in Ruby On Rails. Is there a different between calling to self or source there? class MyObjDecorator < Draper::Decorator def as_json(options={}) ap (self == source) end ... end
and this is where I call the decorator: MyObjDecorator.decorate(my_obj).as_json
My as_json methods prints true, but will this always be true? |
| AWS Elastic Beanstalk - Passenger Standalone - Rails not setting asset cache headers Posted: 11 May 2016 04:09 AM PDT I have a rails application running on AWS EB with passenger standalone. However the asset served doesn't seem to set cache headers. What is the preferred way to do this? |
| Wrong rails plural when creating a model Posted: 11 May 2016 04:35 AM PDT I'm having problems with rails plurals. I have a model named CompanySkill (which represents the skills owned by a company). When creating the model rails pluralizes it with companies_skill instead of company_skills, therefore when I need to set up the has_many :company_skills association rails doesn't use the model. What is the correct solution to this problem? What I thought about is to use inflections, but I don't know if it is the right solution and/or there are better solutions. I'm generating the model from the console: rails generate model CompanySkill invoke active_record create db/migrate/20160511111048_create_companies_skill.rb create app/models/company_skill.rb invoke test_unit create test/models/company_skill_test.rb create test/fixtures/companies_skill.yml
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| Paperclip save image without losing quality Posted: 11 May 2016 05:46 AM PDT How to save image and don't lose quality? in my model has_attached_file :image, :styles => {:blog_article_main => "940x400#"}
original image  and after save it became blurry |
| bootstrap modal working on one page, not working on another page Posted: 11 May 2016 05:51 AM PDT I am working in ruby on rails. Trying to show a modal, which works on another page, but for some reason, same code doesn't show the modal on this page. So, this is the relevant code in the view file: <%= javascript_include_tag 'advertisements', 'data-turbolinks-track' => true %> <%= stylesheet_link_tag 'advertisements', media: 'all', 'data-turbolinks-track' => true %> <script> if( window.canRunAds === undefined ){ var p = 24; console.log(p); $('#myModal1').modal('show'); } </script> <!-- Modal --> <div class="modal fade" id="myModal1" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> <h4 class="modal-title" id="myModalLabel">Modal title</h4> </div> <div class="modal-body"> ... </div> <div class="modal-footer"> <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> <button type="button" class="btn btn-primary">Save changes</button> </div> </div> </div> </div>
canRunAds is defined in advertisements.js file. So, if this window doesn't have this variable, it should show the modal. I can see the p value in the js console, so that means javascript is being rendered, somehow modal is not showing. The same code works in another view file with different id. I tried several things, but couldn't resolve. Any help would be much appreciated. Thanks! |
| Angular's ngIf statement breaks Capybara test Posted: 11 May 2016 06:44 AM PDT My test suite breaks when adding an ngIf statement to a validation tag. I have a div that shows error messages if a field is invalid. Before, these errors were shown at page load. Now I want to show the errors only after the user has interacted with the input field. Adding an ngIf statement seems perfect for this, but it breaks my test suite. This is working perfectly: <div data-ng-messages="userForm.name.$error"> <!-- some input field... --> </div>
With this tests get flaky and unreliable. <div data-ng-messages="userForm.name.$error" data-ng-if="userForm.name.$touched"> <!-- some input field... --> </div>
For instance, one of my feature specs tries to fill in a form, submit and reload page to see if the values are persisted. This test is working perfectly without the ngIf statement, but now the page has the old (not updated) values on page reload. The controller method is not even called (for instance UsersController#update if it's an update form). Gems - rspec-rails 3.4.2
- capybara 2.7.1
- capybara-webkit 1.11.1
- database_cleaner 1.5.3
Update Changing the if statement to userForm.name.$dirty makes tests pass more often... I guess some kind of race condition is introduced here and maybe because $dirty responds a bit faster, that will make tests pass more often... |
| Messaging Rails controller & view Posted: 11 May 2016 03:37 AM PDT Trying to build messaging ability in rails. User to User, all messages(sent and received) appear above the messaging text field and send button (of only the user you are in conversation with) Currently have the models set up but have been not able to implement the view and controller and started to dig a hole after a couple of days. Any advise/examples for the view and controller? contact controller: class ContactsController < ApplicationController before_action :contact, only: [:show, :edit, :update, :destroy] before_action :authenticate_user! def index @contacts = current_user.contacts end def new @contact = Contact.new end def create current_user.contacts.create(contact_params) redirect_to '/contacts' end def show end def edit end def update @contact.update(contact_params) redirect_to '/contacts/' + "#{@contact[:id]}" end def destroy @contact.destroy redirect_to '/contacts' end private def contact_params params.require(:contact).permit(:firstname, :surname, :email, :phone, :image) end def contact @contact = Contact.find(params[:id]) end end
conversation controller: class ConversationsController < ApplicationController end
conversation_users controller: class ConversationsUsersController < ApplicationController end
messages controller: class MessagesController < ApplicationController # before_action :message, only: [:show] before_action :authenticate_user! def index @message = Message.new @messages = current_user.messages end def new # @message = Message.new # @messages = current_user.messages # redirect_to '/messages' # @message = Message.new end def create current_user.messages.create(message_params) redirect_to '/messages' end private def message_params params.require(:message).permit(:title, :body, :image) end def message @message = Message.find(params[:id]) end end
users controller: class UsersController < ApplicationController before_action :authenticate_user! end
contact model: class Contact < ActiveRecord::Base belongs_to :user has_attached_file :image, styles: {thumb: "100x100>"} validates_attachment_content_type :image, content_type: /\Aimage\/.*\Z/ end
conversation model: class Conversation < ActiveRecord::Base has_many :messages has_and_belongs_to_many :users end
conversation_user model: class ConversationsUser < ActiveRecord::Base belongs_to :user belongs_to :conversation end
message model: class Message < ActiveRecord::Base belongs_to :user, dependent: :destroy belongs_to :conversation has_attached_file :image, styles: {thumb: "100x100>"} validates_attachment_content_type :image, content_type: /\Aimage\/.*\Z/ end
user model: class User < ActiveRecord::Base has_many :messages has_and_belongs_to_many :conversations has_many :contacts, dependent: :destroy devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable validates_presence_of :firstname, allow_blank: false validates_presence_of :surname, allow_blank: false end
messages views: index <%if user_signed_in? %> <%= link_to 'Log out', destroy_user_session_path, method: :delete %> <%end%> <% if @messages.any? %> <%= @messages.each do |message| %> <h3><%= message.title %></h3> <br /> <%= message.body %> <br /> <%= image_tag(message.image.url(:thumb)) %> <%end%> <%end%> <br /> <br /> <%= form_for @message, html: {multipart: true} do |f| %> <%= f.label :title %> <%= f.text_field :title %> <br /> <%= f.label :body %> <%= f.text_field :body %> <br /> <%= f.label :image %> <%= f.file_field :image %> <br /> <br /> <%= f.submit %> <% end %>
schema: # These are extensions that must be enabled in order to support this database enable_extension "plpgsql" create_table "contacts", force: :cascade do |t| t.string "firstname" t.string "surname" t.string "email" t.integer "phone" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.string "image_file_name" t.string "image_content_type" t.integer "image_file_size" t.datetime "image_updated_at" t.integer "user_id" end add_index "contacts", ["user_id"], name: "index_contacts_on_user_id", using: :btree create_table "conversations", force: :cascade do |t| t.datetime "created_at", null: false t.datetime "updated_at", null: false end create_table "conversations_users", force: :cascade do |t| t.datetime "created_at", null: false t.datetime "updated_at", null: false t.integer "conversation_id" t.integer "user_id" end add_index "conversations_users", ["conversation_id"], name: "index_conversations_users_on_conversation_id", using: :btree add_index "conversations_users", ["user_id"], name: "index_conversations_users_on_user_id", using: :btree create_table "messages", force: :cascade do |t| t.string "title" t.text "body" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.integer "user_id" t.integer "conversation_id" t.string "image_file_name" t.string "image_content_type" t.integer "image_file_size" t.datetime "image_updated_at" end add_index "messages", ["conversation_id"], name: "index_messages_on_conversation_id", using: :btree add_index "messages", ["user_id"], name: "index_messages_on_user_id", using: :btree 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.inet "current_sign_in_ip" t.inet "last_sign_in_ip" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.string "firstname" t.string "surname" end add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree add_index "users", ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true, using: :btree add_foreign_key "contacts", "users" add_foreign_key "conversations_users", "conversations" add_foreign_key "conversations_users", "users" add_foreign_key "messages", "conversations" add_foreign_key "messages", "users" end
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| Rails ransack predicate escape character Posted: 11 May 2016 05:02 AM PDT Is there any way to tell ransack which escape character to use? I created a custom predicate to let the user use asterisk as a wildcard character (instead of %). What this does is to replace any asterisk in the search term with a percent sign. To let the user search after percent-signs, i want them to be escaped in the search query (except for the actual wildcard asterisks). As an example i got a user named "us%er_name". Searching for "us%er_na*" should return this user. For this, the query should look like SELECT * FROM users WHERE username LIKE 'us\%er\_na%' escape '\';
The escaping and replacement works fine but i don't know how to get "escape '\'" in the query. A generic solution would be preferred as i don't want to do anything other than to just use my custom predicate. -e- In short: I want to escape a users search term and supply the escape character to the query to get a query like the following when searching after "user%name": SELECT * FROM users WHERE username LIKE 'user\%name' escape '\';
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| Nokogiri add attribute to an html tag without damaging its content Posted: 11 May 2016 03:28 AM PDT I'm new to ruby and need to parse html content and update it as required (add an attribute to 'body' tag). I have written the following code def index url = "/home/employee/index.html" doc = Nokogiri::HTML::Document.parse(url) doc.at_css("body").set_attribute("ng-init", "menu.inspired = 'true'") File.open('/home/employee/index.txt','w') {|f| doc.write_html_to f} @content=doc.to_html end
The output written in the file is the following <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <html><body ng-init="menu.inspired = 'true'"><p>/home/employee/index.html</p></body></html>
The output file contains the added attribute, but the content of the html file seems to be overwritten. So I need to figure out where is the mistake I have made. |
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