ruby-on-rails-4

问题 I need to filter data in a table. To do this, I found meta_search gem. I installed meta_search and I get this error: uninitialized constantActiveRecord::Associations::ClassMethods::JoinDependency This is deprecated for Rails 4 (framework that I'm using). So, I installed ransack (rails 4 branch) (gem based on meta_search) and works beautifully. The problem is that I need to use the meta_search's collection_checks method to handle check boxes and this method does not exist in ransack. So, the

问题 In Rails, I have a User model. I added attr_accessor :score to the model. If I render the JSON for one user, I do not see the "score" attribute. Why is this? user = User.find(3) user.score = 55 render json: user 回答1: render json: user, methods: [:score] attr_accessor is alternative for getter and setter method so it is a method and as I have mentioned we can call it as above 来源： https://stackoverflow.com/questions/30641623/property-from-attr-accessor-does-not-show-when-i-render-json

问题 In Rails, I have a User model. I added attr_accessor :score to the model. If I render the JSON for one user, I do not see the "score" attribute. Why is this? user = User.find(3) user.score = 55 render json: user 回答1: render json: user, methods: [:score] attr_accessor is alternative for getter and setter method so it is a method and as I have mentioned we can call it as above 来源： https://stackoverflow.com/questions/30641623/property-from-attr-accessor-does-not-show-when-i-render-json

问题 In Rails, I have a User model. I added attr_accessor :score to the model. If I render the JSON for one user, I do not see the "score" attribute. Why is this? user = User.find(3) user.score = 55 render json: user 回答1: render json: user, methods: [:score] attr_accessor is alternative for getter and setter method so it is a method and as I have mentioned we can call it as above 来源： https://stackoverflow.com/questions/30641623/property-from-attr-accessor-does-not-show-when-i-render-json

问题 I'm following the rails-tutorials from Michael Hartl, it's really fun ! but i'm having troubles from upon listing 8.20 and so on. Cause i guessed i had made a type-o i erased the app and started from scratch again.. The best way to learn is repeat right ? Well.. also on the second build i got the same error. > NoMethodError in SessionsController#create undefined method `[]' for nil:NilClass Extracted source (around line #7): 6 def create 7 user = User.find_by(email: params[:session][:email]

问题 I have a Rails 4 application that uses ActiveRecord to interact with a PostgreSQL 9.3 database. The application makes use of the hstore extension in PostgreSQL for storing key-value pairs in a single database field. Accordingly, Rails automatically detects what I did with that migration and creates the following line in your schema.rb file enable_extension "hstore" In the development and test environments, that works great, as I am deploying to stand-alone PostgreSQL instances. However in

问题 I'm deploying a app on production mode but when i try to finish the process the aways show this need for sqlite adapter, please someone know how to stop this issue? i've been using RAILS_ENV=production but in this case did not worked. current$ rails generate admin_interface:setup RAILS_ENV=production DEPRECATION WARNING: Support for Rails < 4.1.0 will be dropped. (called from warn at /home/ubuntu/.rbenv/versions/2.2.2/lib/ruby/2.2.0/forwardable.rb:183) /home/ubuntu/.rbenv/versions/2.2.2/lib

问题 I am using the acts as votable gem on my rails 4 app. I have finally gotten it to work using ajax, so the page does not refresh when a user votes, however, the vote.size doesn't update until the page is refreshed. Here is my controller action: def upvote @article = Article.find(params[:article_id]) @subarticle = @article.subarticles.find(params[:id]) session[:voting_id] = request.remote_ip voter = Session.find_or_create_by(ip: session[:voting_id]) voter.likes @subarticle respond_to do |format

问题 I am using the acts as votable gem on my rails 4 app. I have finally gotten it to work using ajax, so the page does not refresh when a user votes, however, the vote.size doesn't update until the page is refreshed. Here is my controller action: def upvote @article = Article.find(params[:article_id]) @subarticle = @article.subarticles.find(params[:id]) session[:voting_id] = request.remote_ip voter = Session.find_or_create_by(ip: session[:voting_id]) voter.likes @subarticle respond_to do |format

问题 I am using the acts as votable gem on my rails 4 app. I have finally gotten it to work using ajax, so the page does not refresh when a user votes, however, the vote.size doesn't update until the page is refreshed. Here is my controller action: def upvote @article = Article.find(params[:article_id]) @subarticle = @article.subarticles.find(params[:id]) session[:voting_id] = request.remote_ip voter = Session.find_or_create_by(ip: session[:voting_id]) voter.likes @subarticle respond_to do |format