uninitialized constant DocumentsController::PDFKit | Fixed issues

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• uninitialized constant DocumentsController::PDFKit
• Rails ajax, not able to append new record in table
• Javascript not always loaded, but it's included in head
• Stripe OAuth - redirect URL = "Heroku | No such app"
• How to create button with rails that add input fields with javascript
• Wrong number of arguments (1 for 2) for update method
• Only allow user to create one feedback for each movies
• Ruby on rails api unable to delete
• Playing sound on Rails server on request of Client
• Query Range field type in Mongoid
• Serving Rails' precompiled assets using nginx in Docker
• Angular in Rails requires precompile
• No route matches [POST] "/users/1/contacts/new"
• Rails group by hour of the day for created_at column
• how can I post the data from controller to a web service in json format in rails [on hold]
• How to compare a Hask Key with an Integer in rails
• Do number of API calls in the background with delay
• Rails API for fb login with Ionic
• Rendering JS.ERB results in raw code
• RSpec: how do I correctly simulate #destroy failure
• Save CarrierWave Upload as Base64
• Rails using paperclip on google cloud
• A new form to update a record in Rails 4
• Rails 4 dynamic includes
• Rails4 test driven development [on hold]
• Add multiple filters in Spree Commerce Rails
• Rails Postgres migration without downtime
• Rails caches_action and meta tags
• Can we use Postgres for testing and Mongo for development environment in rails
• Rails - Modular many-to-many relations

uninitialized constant DocumentsController::PDFKit Posted: 23 Mar 2016 07:14 AM PDT I have been trying for a couple of hours to get PDFKit working with my app. I am getting an error of Mime::Type.register "application/pdf", :pdf when I try to generate a pdf. The pdfkit gem is installed wkhtmltopdf is installed and seems to be running ok mime_types.rb Mime::Type.register "application/pdf", :pdf . pdfkit.rb PDFKit.configure do |config| config.wkhtmltopdf = 'C:\wkhtmltopdf\bin\wkhtmltopdf.exe' end My Show def in the documents Controller includes pdf = PDFKit.new('test') send_data(pdf.to_pdf) respond_to do |format| format.html # show.html.erb format.json { render json: @document } format.csv { send_data @documents.as_csv } Note that there is no format.pdf application.rb has require 'pdfkit' config.middleware.use PDFKit::Middleware If I go to my documents index it shows OK. If I add .pdf, I get ActionController::UnknownFormat in DocumentsController#index ActionController::UnknownFormat Rails.root: C:/inetpub/wwwroot/development/research_library_new Application Trace | Framework Trace | Full Trace app/controllers/documents_controller.rb:40:in `index' It appears that it is looking for format.pdf in the respond_to block If I try to show one of the documents, I get NameError in DocumentsController#show uninitialized constant DocumentsController::PDFKit Rails.root: C:/inetpub/wwwroot/development/research_library_new Application Trace | Framework Trace | Full Trace app/controllers/documents_controller.rb:84:in `show' Request Parameters: {"id"=>"10"} I checked with a rake middleware and pdfkit is installed as middleware.

Rails ajax, not able to append new record in table Posted: 23 Mar 2016 07:02 AM PDT I am trying to use ajax in my rails application. My ajax is working fine while displaying _form to create new student record. But once I create new student I want to hide the _form and display list of students with new student record added at bottom of table. Currently my code is creating new student record, hiding the new _form and showing the list of students. But due to some reason the new student record is not getting appended at the bottom of the table. Once I refresh the page then I can see the record of new student displayed at the bottom on the table. But I would like to achieve this behaviour without refreshing the page. Below are my codes: students_controller.rb def index @students = Student.all end def new @student = Student.new end def create @student = Student.new(student_params) @student.save end private def student_params params.require(:student).permit(:name) end index.html.erb file <div id="student-list"> <h1>Listing Students</h1> <table> <thead> <tr> <th>Name</th> <th colspan="3"></th> </tr> </thead> <tbody> <div id='all-students'> <%= render @students %> </div> </tbody> </table> <br> <%= link_to 'New Student', new_student_path, remote: true %> </div> <div id='new-form'></div> _student.html.erb partial <tr> <td><%= student.name %></td> <td><%= link_to 'Show', student %></td> <td><%= link_to 'Edit', edit_student_path(student) %></td> <td><%= link_to 'Destroy', student, method: :delete, data: { confirm: 'Ary you sure?' } %></td> </tr> new.js.erb file (this one is working fine) $("#student-list").hide(); $("#new-form").html("<%= j render 'form' %>"); _form.html.erb partial <%= form_for(@student, remote: true) do |f| %> <div class="field"> <%= f.label :name %><br> <%= f.text_field :name %> </div> <div class="actions"> <%= f.submit %> </div> <% end %> <%= link_to '<< back', students_path, remote: true %> create.js.erb file (this is the file which is not working) $("#all_students").append("<%= j render @student %>"); $("#new-form").hide(); $("#student-list").show(); I am using Rails 4.2.5 and ruby 2.3.0 Here is output from rails server Started POST "/students" for ::1 at 2016-03-24 00:44:23 +1100 Processing by StudentsController#create as JS Parameters: {"utf8"=>"✓", "student"=>{"name"=>"dd"}, "commit"=>"Create Student"} (0.1ms) begin transaction SQL (0.3ms) INSERT INTO "students" ("name", "created_at", "updated_at") VALUES (?, ?, ?) [["name", "dd"], ["created_at", "2016-03-23 13:44:23.465302"], ["updated_at", "2016-03-23 13:44:23.465302"]] (0.7ms) commit transaction Rendered students/_student.html.erb (0.4ms) Rendered students/create.js.erb (8.4ms) Completed 200 OK in 21ms (Views: 18.6ms | ActiveRecord: 1.0ms) Here is output from browser (Chrome -> Network -> XHR) $("#all_students").append("<tr>\n <td>dd<\/td>\n <td><a href=\"/students/43\">Show<\/a><\/td>\n <td><a href=\"/students/43/edit\">Edit<\/a><\/td>\n <td><a data-confirm=\"Ary you sure?\" rel=\"nofollow\" data-method=\"delete\" href=\"/students/43\">Destroy<\/a><\/td>\n<\/tr>\n"); $("#new-form").hide(); $("#student-list").show();

Javascript not always loaded, but it's included in head Posted: 23 Mar 2016 07:00 AM PDT I have Ruby on Rails project, where I use a third party library (editablegrid). I placed the files in vendor/assets/javascripts and I have included the library in the layout file that for views that need it: <!DOCTYPE html> <html> <head> <title>Mcf</title> <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => true %> <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %> <%= javascript_include_tag 'dynamic_collections' %> <%= csrf_meta_tags %> <%= javascript_include_tag "editablegrid" %> <%= javascript_include_tag "editablegrid_editors" %> <%= javascript_include_tag "editablegrid_renderers" %> <%= javascript_include_tag "editablegrid_utils" %> <%= javascript_include_tag "editablegrid_validators" %> </head> <body> <%= yield %> </body> The generated html always has the <script> tags for editablegrid, but the browser does not always load it. The js files can always be loaded from the urls generated by javascript_include_tag. The pattern I noticed in whether js loads or not is that, js won't load if I click a link leading to the page except if js already loaded once on the same tab. Typing the page's url in the addressbar or refeshing the page will load js. I tested this pattern on Chromium. In Chromium's Elements devtool only editablegrid javascripts don't show up, all other js files seem to be loaded. Versions: Ruby 2.2.3p173 (2015-08-18 revision 51636) Rails 4.2.5 Chromium 47.0.2526.106 Ubuntu 14.04 (64-bit) Firefox 43.0.4 (Bug is there, didn't test for pattern)

Stripe OAuth - redirect URL = "Heroku | No such app" Posted: 23 Mar 2016 07:01 AM PDT Having some trouble with my redirect URL for Stripe Connect when hosted on Heroku. Running locally, it all works as expected, users connect with OAuth, with their publishable key save to the database, and then proceeding as normal through the site. On Heroku however, users connect to Stripe via OAuth, entering their details and password, then on redirect, they are greeted with the following error message: Heroku | No such app There is no app configured at that hostname. Perhaps the app owner has renamed it, or you mistyped the URL. The documentation has not helped so far, and I haven't been able to find anything similar on Stack Overflow. Stripe Details: Production Redirect URI: https://www.hidden-hamlet-51741.herokuapp.com/oauth/callback I have played around with some variations, however have had no success. Heroku Logs: 2016-03-23T13:23:37.799909+00:00 heroku[router]: at=info method=GET path="/users/auth/stripe_connect" host=hidden-hamlet-51741.herokuapp.com request_id=4d52e646-6d02-45be-87e6-7492665c4d17 fwd="86.138.166.211" dyno=web.1 connect=2ms service=19ms status=302 bytes=1549 2016-03-23T13:23:37.796546+00:00 app[web.1]: Started GET "/users/auth/stripe_connect" for 86.138.166.211 at 2016-03-23 13:23:37 +0000 2016-03-23T13:23:37.799240+00:00 app[web.1]: I, [2016-03-23T13:23:37.799170 #3] INFO -- omniauth: (stripe_connect) Request phase initiated. 2016-03-23T13:30:57.289321+00:00 app[web.1]: Started GET "/users/auth/stripe_connect" for 86.138.166.211 at 2016-03-23 13:30:57 +0000 2016-03-23T13:30:57.306551+00:00 app[web.1]: I, [2016-03-23T13:30:57.306458 #3] INFO -- omniauth: (stripe_connect) Request phase initiated. 2016-03-23T13:30:57.309718+00:00 heroku[router]: at=info method=GET path="/users/auth/stripe_connect" host=hidden-hamlet-51741.herokuapp.com request_id=e7805fd0-3973-4a27-b842-433e1dbb1532 fwd="86.138.166.211" dyno=web.1 connect=2ms service=30ms status=302 bytes=1549 Any pointers would be super helpful. Thanks.

How to create button with rails that add input fields with javascript Posted: 23 Mar 2016 06:36 AM PDT What is the best practice to create a button with a rails form_helper that will generate through Javascript/JQuery new input fields ? (This button is supposed to be used within a form with nested objects) N.B. : My app is actually running with rails 3.2, but I want it to be compatible with rails 4 and 5.

Wrong number of arguments (1 for 2) for update method Posted: 23 Mar 2016 06:35 AM PDT I'm having an issue tracking down why my update method isn't getting the needed arguments. I have a similar test for show and the payloads are working. In this scenario the route in question is invoice/invoice_id/trip/id. If you can help me spot the error and give any suggestions on how to troubleshoot this type of problem in the future that'd be great. This is the update method. def update if @trip.update(@trip.trip_id, trip_params) head :no_content else render json: [@invoice, @trip].errors, status: :unprocessable_entity end end With the following private methods. private def set_trip @trip = Trip.where(:invoice_id => params[:invoice_id], :trip_id => params[:id] ) end def trip_params params.require(:trip).permit(:trip_id, :depart_airport, :arrive_airport, :passenger_first_name, :passenger_last_name, :passenger_count, :departure_date, :merchant_id) end def load_invoice @invoice = Invoice.find(params[:invoice_id]) end end My failing test looks like this. test "should update trip" do put :update, invoice_id: @invoice.invoice_id, id: @trip, trip: {arrive_airport: @trip.arrive_airport, depart_airport: @trip.depart_airport, departure_date: @trip.departure_date, passenger_count: @trip.passenger_count, passenger_first_name: @trip.passenger_first_name, passenger_last_name: @trip.passenger_last_name} assert_response 204 end

Only allow user to create one feedback for each movies Posted: 23 Mar 2016 06:49 AM PDT I have three models, User, Movie, and Review. Here is the relation: # User.rb has_many :movies has_many :reviews # Movie.rb belongs_to :user has_many :reviews # Review.rb belongs_to :movies belongs_to :users Here is the routes: # routes.rb resources :movies do resources :reviews end Here is the controller: # reviews_controller.rb class ReviewsController < ApplicationController before_action authenticate_user! before_action :find_movie before_action :find_review, only: [:edit, :update, :destroy] def new @review = Review.new end def create @review = Review.new(review_params) if @review.save redirect_to movie_path(@movie) else render 'new' end end def edit end def update if @review.update(review_params) redirect_to movie_path(@movie) end end private def find_movie @movie = Movie.find(params[:movie_id]) end def find_review @review = Review.find(params[:id]) end def review_params params.require(:review).permit(:rating, :comment) end end I created a new and partial form and then in the show page of the movie, I create this line of code to show the button of creating new review for a particular movie: # views/movies/show.html.erb <%= link_to 'Give review', new_movie_review_path(@movie) %> I don't want the user to create another review after they submit a review for the same movie. That's why I want to hide the "Give review" button if the user is already gave the feedback. How do I do that?

Ruby on rails api unable to delete Posted: 23 Mar 2016 06:37 AM PDT I have used scaffold to generate simple application, I'm able to perform GET and POST via chrome extension tool called "PostMan", However I'm unable to perform DELETE action via this tool, I'm getting: No route matches [DELETE] "/settings.json/18" I have checked routes.rb Rails.application.routes.draw do resources :settings And deleting record via default scaffold works, only when I'm performing an API call. Console log displays the following: ActionController::RoutingError (No route matches [DELETE] "/settings.json/18"): actionpack (4.2.5) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call' web-console (2.3.0) lib/web_console/middleware.rb:20:in `block in call' web-console (2.3.0) lib/web_console/middleware.rb:18:in `catch' I'm not sure what else to check, any input is hightly appreicate it.

Playing sound on Rails server on request of Client Posted: 23 Mar 2016 06:37 AM PDT I want to play music files on server machine which is connected to a stereo system but on the request of a client side. The client opens the web app through the URL and click play and the sound play on the server machine. (I don't want to stream) At the moment my sound file is located in the same directory as the Controller but when I press the play button from a browser nothing happen. This might be very straightforward but as a Beginner I am finding it difficult to execute system command on the host. So far I have this client interface on localhost:3000 I have a controller defined which handles the request from play button. class WelcomeController < ApplicationController def index end def play `mplayer myfile.mp3` head :ok end end Routes.rb Rails.application.routes.draw do root 'welcome#index' get "/play" => "welcome#play" end Output of Rake Routes Prefix Verb URI Pattern Controller#Action root GET / welcome#index play GET /play(.:format) welcome#play Index.html.erb <h1>Play it!</h1> <%= link_to "Play", play_path, remote: true %>

Query Range field type in Mongoid Posted: 23 Mar 2016 06:16 AM PDT Using Rails 4.2 & Mongoid 5.1 I have a field with type range. I need to query for a document that has a given number in the range. Class User has_many :age_rules field :age, type: Integer end Class AgeRule belongs_to :user field :age_range, type: Range field :score, type: Integer end AgeRule has one record: *#<AgeRule _id: 56700e, age_range: {"min"=>10, "max"=>100}, score: 1.0>* I need to retrieve the record based on the age of the user. I tried AgeRule.find_by(age_range: 10)

Serving Rails' precompiled assets using nginx in Docker Posted: 23 Mar 2016 06:08 AM PDT Currently I'm setting up my app using docker. I've got a minimal rails app, with 1 controller. You can get my setup by running these: rails new app --database=sqlite --skip-bundle cd app rails generate controller --skip-routes Home index echo "Rails.application.routes.draw { root 'home#index' }" > config/routes.rb echo "gem 'foreman'" >> Gemfile echo "web: rails server -b 0.0.0.0" > Procfile echo "port: 3000" > .foreman And I have the following setup: Dockerfile: FROM ruby:2.3 # Install dependencies RUN apt-get update && apt-get install -y \ nodejs \ sqlite3 \ --no-install-recommends \ && rm -rf /var/lib/apt/lists/* # Configure bundle RUN bundle config --global frozen 1 RUN bundle config --global jobs 7 # Expose ports and set entrypoint and command EXPOSE 3000 CMD ["foreman", "start"] # Install Gemfile in different folder to allow caching WORKDIR /tmp COPY ["Gemfile", "Gemfile.lock", "/tmp/"] RUN bundle install --deployment # Set environment ENV RAILS_ENV production ENV RACK_ENV production # Add files ENV APP_DIR /app RUN mkdir -p $APP_DIR COPY . $APP_DIR WORKDIR $APP_DIR # Compile assets RUN rails assets:precompile VOLUME "$APP_DIR/public" Where VOLUME "$APP_DIR/public" is creating a volume that's shared with the Nginx container, which has this in the Dockerfile: FROM nginx ADD nginx.conf /etc/nginx/nginx.conf And then docker-compose.yml: version: '2' services: web: build: config/docker/web volumes_from: - app links: - app:app ports: - 80:80 - 443:443 app: build: . environment: SECRET_KEY_BASE: 'af3...ef0' ports: - 3000:3000 This works, but only the first time I build it. If I change any assets, and build the images again, they're not updated. Possibly because volumes are not updated on image build, I think because how Docker handles caching. I want the assets to be updated every time I run docker-compose built && docker-compose up. Any idea how to accomplish this?

Angular in Rails requires precompile Posted: 23 Mar 2016 06:05 AM PDT I am new to Angular so my config needs help. When I edit an Angular file I must precompile assets to see changes on development. rake assets:precompile Normally, I only precompile for production before pushing to Heroku. What can I do to avoid this step? I have simple setup using bower-rails gem. application.js //= require angular Gemfile gem 'bower-rails' vendor/Bowerfile asset 'angular', '~1.5' resolution 'angular', '1.5' app/assets/javascripts/some-file.js (function(){ console.log("outside angular stuff shows on page load"); angular.module('ads',[]) .controller("AdSearchController", [ "$scope", "$http", function($scope, $http) { console.log("inside angular stuff does not show unless precompiled"); ... The view calling the angular controller is located in: app/views/thing/daview.html.erb Incidentally, I am also getting this console warning which may be related: outside angular stuff shows on page load application-e058e14….js?body=1:51201 WARNING: Tried to load angular more than once.

No route matches [POST] "/users/1/contacts/new" Posted: 23 Mar 2016 06:01 AM PDT app/views/contacts/new.html.erb <h2>Add New Contact</h2> <div class="row"> <div class="col-md-8"> <%= simple_form_for @contact, :url => new_user_contact_path do |f| %> <div class="form-group"> <%= f.label :first_name %> <%= f.text_field :first_name, class: "form-control" %> </div> <div class="form-group"> <%= f.label :last_name %> <%= f.text_field :last_name, class: "form-control" %> </div> <div class="form-group"> <%= f.input :date_of_birth, as: :date, discard_year:true, order:[:day, :month] %> </div> <div class="form-group"> <%= f.label :sex %> <%= f.select :sex, [:male, :female], class: "form-control" %> </div> <div class="form-group"> <%= f.label :phone_number %> <%= f.text_field :phone_number, class: "form-control" %> </div> <div class="form-group"> <%= f.label :address %> <%= f.text_area :address, class: "form-control" %> </div> <div class="form-group"> <%= f.button :submit, "Submit", class: "btn btn-success btn-md btn-block" %> </div> </div> <% end %> </div> </div> <%= link_to "Back", user_contacts_path %> My routes when I run rake routes Prefix Verb URI Pattern Controller#Action new_user_session GET /users/sign_in(.:format) devise/sessions#new user_session POST /users/sign_in(.:format) devise/sessions#create destroy_user_session DELETE /users/sign_out(.:format) devise/sessions#destroy user_password POST /users/password(.:format) devise/passwords#create new_user_password GET /users/password/new(.:format) devise/passwords#new edit_user_password GET /users/password/edit(.:format) devise/passwords#edit PATCH /users/password(.:format) devise/passwords#update PUT /users/password(.:format) devise/passwords#update cancel_user_registration GET /users/cancel(.:format) devise/registrations#cancel user_registration POST /users(.:format) devise/registrations#create new_user_registration GET /users/sign_up(.:format) devise/registrations#new edit_user_registration GET /users/edit(.:format) devise/registrations#edit PATCH /users(.:format) devise/registrations#update PUT /users(.:format) devise/registrations#update DELETE /users(.:format) devise/registrations#destroy user_contacts GET /users/:user_id/contacts(.:format) contacts#index POST /users/:user_id/contacts(.:format) contacts#create new_user_contact GET /users/:user_id/contacts/new(.:format) contacts#new edit_user_contact GET /users/:user_id/contacts/:id/edit(.:format) contacts#edit user_contact GET /users/:user_id/contacts/:id(.:format) contacts#show PATCH /users/:user_id/contacts/:id(.:format) contacts#update PUT /users/:user_id/contacts/:id(.:format) contacts#update DELETE /users/:user_id/contacts/:id(.:format) contacts#destroy users GET /users(.:format) users#index POST /users(.:format) users#create new_user GET /users/new(.:format) users#new edit_user GET /users/:id/edit(.:format) users#edit user GET /users/:id(.:format) users#show PATCH /users/:id(.:format) users#update PUT /users/:id(.:format) users#update DELETE /users/:id(.:format) users#destroy index GET /index(.:format) redirect(301, /) root GET / high_voltage/pages#show {:id=>"index"} page GET /pages/*id high_voltage/pages#show config/routes.rb Rails.application.routes.draw do devise_for :users resources :users do resources :contacts end end My new and create action in ContactsController def new @contact = Contact.new end def create @contact = Contact.new(contact_params) @contact.user = current_user if @contact.save flash[:success] = "Contact was successfully created!" redirect_to @contact.user else render :new end end This is the issue: I get the error: No route matches [POST] "/users/1/contacts/new" when I submit the form at http://localhost:3000/users/1/contacts/new. What could be the issue?

Rails group by hour of the day for created_at column Posted: 23 Mar 2016 06:59 AM PDT I have a Subscribe Model and want to group by hour of day. I checked with rails group records by dates of created_at and rails - group by day as well as hour But no luck!. 2.3.0 :175 > Subscribe.find 13 Subscribe Load (0.9ms) SELECT "subscribes".* FROM "subscribes" WHERE "subscribes"."id" = $1 LIMIT 1 [["id", 13]] => #<Subscribe id: 13, user_id: 7, publisher_id: 5, created_at: "2015-11-23 00:37:49", updated_at: "2016-03-22 08:04:31", subscription_id: "2"> on applying the other solution 2.3.0 :174 > Subscribe.where("DATE_PART('hour', created_at) = ?", 13) Subscribe Load (1.0ms) SELECT "subscribes".* FROM "subscribes" WHERE (DATE_PART('hour', created_at) = 13) => #<ActiveRecord::Relation []> To achieve this I used groupdate graph_data = Subscribe.group_by_hour_of_day(:created_at, format: "%-l %M %P", time_zone: "Kolkata",range: start_date.to_datetime..end_date.to_datetime).count => {"12 00 am"=>0, "1 00 am"=>0, "2 00 am"=>0, "3 00 am"=>0, "4 00 am"=>0, "5 00 am"=>1, "6 00 am"=>1, "7 00 am"=>0, "8 00 am"=>0, "9 00 am"=>0, "10 00 am"=>0, "11 00 am"=>0, "12 00 pm"=>1, "1 00 pm"=>1, "2 00 pm"=>0, "3 00 pm"=>0, "4 00 pm"=>0, "5 00 pm"=>0, "6 00 pm"=>0, "7 00 pm"=>0, "8 00 pm"=>0, "9 00 pm"=>0, "10 00 pm"=>0, "11 00 pm"=>0} but for Subscribe 13 there is an record at created_at (2015-11-23 00:37:49) but it return as 0 Any help would be appreciated!!!

how can I post the data from controller to a web service in json format in rails [on hold] Posted: 23 Mar 2016 05:49 AM PDT I want to post data in json format to a web service in rails, please give me sample rails code with explanation and proper syntax.

How to compare a Hask Key with an Integer in rails Posted: 23 Mar 2016 05:51 AM PDT params[:mg_question_id].each do |question| @poll=MgPollData.new @poll.mg_question_id= question params[:options_id].each do |k,v| if k==question @poll.answer= v end end @poll_answers.save end here, im comparing the array value with the hash key. But hash key is string and array is integer. thats why im unable to compare the both. Is there any solution regarding this ?

Do number of API calls in the background with delay Posted: 23 Mar 2016 05:33 AM PDT Can you help me to choose strategy. I want to do number of API calls in the background with delay. I prefer to use ActiveJob with Sidekiq. For example, my worker should do 1000 API calls, but should be delay 60 seconds among them. Sure, I just can use sleep(60), it's good for performance(a thread should sleep), but performing of a worker will take 17 hours. Does it mean if I have 100 such tasks like this one, I should start 100 workers to perform them asynchronously? Or you can suggest other way to improve that, because this queue can be handled by 10 workers and I need some workers for other stuff(email notification, updates etc). Is it good to start sidekiq with 300 workers in a process?

Rails API for fb login with Ionic Posted: 23 Mar 2016 05:33 AM PDT I want to build a rails api for fb login using, ionic framework. Till now I've successfully created a web base application and it's successfully authenticating with Facebook. Now I want to do the same but with ionic based app. Questions? Is this possible to write a rails api using omniauth and using the fb authentication api with ionic. If it's(1) is possible than what kind of json request is to be made or returned. Couldn't find anything over the web about it, nor any github project of rails with ionic (fb login). My Current code: Controller: class SessionsController < ApplicationController def create user = User.from_omniauth(env["omniauth.auth"]) session[:user_id] = user.id redirect_to root_url end def destroy session[:user_id] = nil redirect_to root_url end end Model: class User < ActiveRecord::Base def self.from_omniauth(auth) where(provider: auth.provider, uid: auth.uid).first_or_initialize do |user| user.provider = auth.provider user.uid = auth.uid user.name = auth.info.name user.oauth_token = auth.credentials.token user.oauth_expires_at = Time.at(auth.credentials.expires_at) user.save! end end end Initializers: OmniAuth.config.logger = Rails.logger Rails.application.config.middleware.use OmniAuth::Builder do provider :facebook, "123", "abc" end

Rendering JS.ERB results in raw code Posted: 23 Mar 2016 05:48 AM PDT When an AJAX request executes, show.js.erb renders the partial _article.haml. What I want to be able to do in show.js.erb is to write: <%= j render 'article' %> Since it has a .js extension I am required to wrap this in JavaScript (the example above does not render the partial), so: '<%= j render 'article' %>' OR ('<%= j render 'article' %>'); This would render the partial but with raw code--including HTML and JS escaping. ('things will go back to \"normal.\"<\/p>\n\n'); What's the right way to do this? welcome#index: .ajax_load.article-content{ data: { 'remote-url' => article_path(@article) } } articles.js: $(document).ready(function() { $('.ajax_load').each(function(index, element) { var url = $(element).data('remote-url') if (url) { $.get(url, function(responseText) { $(element).html(responseText); }) } else { console.log("missing url for ajax!") } }) })

RSpec: how do I correctly simulate #destroy failure Posted: 23 Mar 2016 06:35 AM PDT I'm having a very hard time simulating the failure of a destroy method in my controller. My controller's destroy looks like this: def destroy project = Project.find(params[:id]) project.destroy if project.destroyed? render json: { project: nil, message: "The project was successfully deleted" } else render json: { message: "Could not delete project", }, status: :unprocessable_entity end end I'm trying to render the json in the else block in my test, but can't get it done. So far the particular test looks like this: describe "DELETE #destroy" do let!(:project) { create(:project, :open) } context "when invalid" do it "returns an error if the project was not deleted" do expect(Project).to receive(:find).with(project.id.to_s).and_call_original expect(project).to receive(:destroy).and_return(false) delete :destroy, id: project end end end The test either returns the 'happy path' or gives me errors. At the moment: Failure/Error: expect(project).to receive(:destroy).and_return(false) (#<Project:0x007f87cf5d46a8>).destroy(*(any args)) expected: 1 time with any arguments received: 0 times with any arguments If anyone could point me in the right direction, and explain how I can simulate a 422, I'd be very grateful!

Save CarrierWave Upload as Base64 Posted: 23 Mar 2016 05:12 AM PDT I would like to take an uploaded attachment from CarrierWave and save it as a Base64 string in my database table, as opposed to saving the path of the upload. I have absolutely no idea where to start the process. I tried to create the following: ........ before_create :process_image mount_uploader :image_upload, ImageUploader ....... attr_accessible :name, :image_upload, :authentication_type attr_reader :image private def process_image if !self.image_upload.path.nil? self.image = Base64.encode64(file.open(self.image_upload.path).read) self.image_upload = nil end end However, during the upload I get the following error: NoMethodError (undefined method `image_upload_will_change!' I am sure it's something trivial, however, it seems like I am the only one that wants to try this.

Rails using paperclip on google cloud Posted: 23 Mar 2016 05:10 AM PDT I have a issue when I upload Images on google cloud using rails and paperclip. Localhost works perfect the issue occurs on production mode. has_mongoid_attached_file :image, :styles => { :large => "380x380!" , :medium => "240x240", :small => "120x120!" }, :storage => :fog, :fog_public => true, :fog_directory => 'XXXX', :path => "images/:id/:style/:basename.:extension", :fog_credentials => { :provider => 'Google', :google_storage_access_key_id => 'XXXXX', :google_storage_secret_access_key => 'XXXXX'} validates_attachment_content_type :image, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"] The server returns has contents that are not what they are reported to be Thank you for your efforts !! :)

A new form to update a record in Rails 4 Posted: 23 Mar 2016 05:45 AM PDT I have a Rails 4 app. In this app, I have multiple HABTM relationships between various models. For example, a task can have many learning objectives as well as many missions associated with it. Right now, I have the edit form in modal dialog that edits the task record and is invoked via the edit_task_path(@task) that updates the record. I would like to create a new form that also does that update action; however, I only want this form to be for updating the associations for the tasks. My main question is: how do I create and call a second form to route to the update action for the same record? I would basically like a update_task_path(@task) that handles the update controller action as well. I've looked at various stack overflows and none specifically address a new form for the update controller action.

Rails 4 dynamic includes Posted: 23 Mar 2016 05:19 AM PDT I have 3 models class Song has_and_belongs_to_many :albums has_many :posts, as: :songable end class UnknownSong has_many :posts, as: :songable end class Posts belongs_to :songable, polymorphic: true end And I try loading all posts with media inside post_with_media = Posts.includes(:songable) post_with_media.each { ... } here N+1 album for song post_with_media = Posts.includes(songable: :albums) # here raise error because no albums on UnknownSong What are best practices to deal with "conditional includes?" and load all posts with songs => albums, unknown_songs?

Rails4 test driven development [on hold] Posted: 23 Mar 2016 04:26 AM PDT How is test driven development on rails helpful? Is it okay to test an app using manual test cases on my browser or is it important to use gems like rspec and others to test my app.

Add multiple filters in Spree Commerce Rails Posted: 23 Mar 2016 04:15 AM PDT We need to implement custom filters for categories in spree ecommerce in latest version as seen here https://github.com/spree/spree . We need to do it in a dynamic way because we have about 100 filters or more to make. The ideal solution would be to show all available filters in admin area and admin can activate/deactivate them for each category. Current Scenario: We know how to make a new filter and apply it. But it takes about four methods per filter as shown in the product_filter.rb file linked below. Some links we have found useful: https://gist.github.com/maxivak/cc73b88699c9c6b45a95 https://github.com/radar/spree-core/blob/master/lib/spree/product_filters.rb

Rails Postgres migration without downtime Posted: 23 Mar 2016 06:23 AM PDT Let's say I want to add a column on my users table running the following migration class AddVersionHistoryToUsers < ActiveRecord::Migration def change add_column :users, :versions, :string, array: true, default: '{}' User.find_each do |user| if user.app_version? user.versions << user.app_version.to_s user.save! end end end end My aim is to insert the current app_version of each user into the versions array. How can I execute a migration without a lock in the users table due to the default value?

Rails caches_action and meta tags Posted: 23 Mar 2016 04:02 AM PDT I am stuck at what I think is a very simple/common usecase. I want to use "caches_action, layout:false" and display, from the layout, dynamic tags that will be set by the action (either from the view or the controller). I could not find any standard rails way to do this as content_for does not work with caches_action, instance variables are not cached (?), and all the metatags helper gems (metamagic and meta-tags) do not support (or even mention) this usecase. Which brings my question: Is there any way to do this ? Example I am using caches_action, layout:false on a SandboxController#show method #app/controllers/sandbox_controller.rb class SandboxController < ApplicationController caches_action :show, layout: false, expires_in: 1.minute def show @meta_title = "Best page ever" end end The view #app/views/sandbox/show.html.erb We are in show action. The layout #app/views/layouts/application.html.erb <title><%= @meta_title %></title> Debug: <%= @meta_title %> <br/> <%= yield %> Thanks !

Can we use Postgres for testing and Mongo for development environment in rails Posted: 23 Mar 2016 04:17 AM PDT I have a rails application running with MongoDB for the development environment. We're planning to migrate to an SQL Database (PostgreSQL) and in the process we're first adding RSpec using PostgreSQL as our test database. I do understand following points: We've ActiveRecord ORM for connecting rails with an SQL Based DB and Mongoid for MongoDB. We've migrations for our test env and no such migrations for dev environment. Our models will turn into this: class MyModel < ActiveRecord::Base include Mongoid::Document end Will there be any blockers if I go with such approach and start adding rspec using PostgreSQL database ?

Rails - Modular many-to-many relations Posted: 23 Mar 2016 05:57 AM PDT Context In the context of a Ruby on Rails application, in a school's project. Let's consider the context of a team-based game, with many characters to choose from. I want to represent affinities between two characters in different context, which means whether two characters are being teamed-up or are facing each other or even when one is present in the game while the other is missing. I would then have tables that looks something like this in my database Characters Ally-Relation Enemy-Relation PlayingSingle-Relation Each of these <name>-Relation tables represents a many-to-many relation between Characters, with an additional score that represents the strongness of the relation Of course, relations between character are subject to changes. We might decide for any reason that a relation has become irrelevant, or another relation that we didn't thought of before just appeared. In terms of display, we want to look for both the best and worst other characters in a specific relation. Question I came up with something like this. class Relation < ActiveRecord::Base scope :best, ->(character_id) { Character.find(where(character_left: character_id).order("score desc").limit(5).pluck(:character_right)) } end Where character_left and character_right are the two characters to be considered for in the relation and the score is the strenght of the bond. However, when fetching data, my teacher thinks it would be best to have scopes in the Characters model to find both the best and worst other character in a specific relation. This, because the teammate that is doing, say, the HTML code don't give a damn about the structure of the Relations when he wants to display characters. He told me about using has_and_belongs_to_many and he sketched me some code he would expects that looks something like Character.best(:relation) to fetch the data. While I think what I did is better (obviously :) ). Having the scopes that will fetch Characters from within the Relation models, as they subject to appear and disappear keeps the request relation specifics. This prevents us from modifying the Characters model every time we fumble with the Relations. Having somethings that looks like Relation.best(:hero) seems cleaner to me. What do you think about it ? What are good practices around this very specific situation. Are there any right way to apply and use modular many-to-many relation s in a Ruby on Rails application ?

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