ruby

问题 I have an ActionCable method that subscribes the user. If a new convo is started, I want to subscribe the user to the new channel as well. I can't figure out the proper syntax for calling a channel method in a controller. UPDATE: The issue is that the messages are appended to the chatbox when sent, but when the first message, is sent, the websocket connection is not established yet, and therefore it looks to the user as if the message was not sent (because it's not being appended). channel

问题 if i have rspec like this describe 'Foo' do // init go here describe 'Sub-Foo' do it "should Bar" do // test go here // puts ... <-- need "Foo.Sub-Foo should Bar" here end end end How can i get "Foo.Sub-Foo should Bar" inside the test context at // test go here? It is similar to format with specdocs, but how to get it inside itself? 回答1: describe 'Foo' do describe 'Sub-Foo' do it "should Bar" do |example| puts "#{self.class.description} #{example.description}" end end end The above code

问题 if i have rspec like this describe 'Foo' do // init go here describe 'Sub-Foo' do it "should Bar" do // test go here // puts ... <-- need "Foo.Sub-Foo should Bar" here end end end How can i get "Foo.Sub-Foo should Bar" inside the test context at // test go here? It is similar to format with specdocs, but how to get it inside itself? 回答1: describe 'Foo' do describe 'Sub-Foo' do it "should Bar" do |example| puts "#{self.class.description} #{example.description}" end end end The above code

问题 I have many rubies installed by ruby-install under ~/.rubies : ls .rubies ruby-1.9.3-p545 ruby-2.0.0-p598 ruby-2.1.3 ruby-2.1.5 ruby-2.0.0-p451 ruby-2.1.2 ruby-2.1.4 ruby-2.2.0 I want to uninstall one of the ruby installed by ruby-install, How do I do that? 回答1: Unfortunately appears that ruby-install just downloads and compiles Ruby, with no option to remove it, unlike RVM or rbenv . So, probably you'll need to run some manual commands here to delete all installed files. 1. Locate it Usually

问题 I'm trying to test a Rails controller branch that is triggered when the model method raises an error. def my_controller_method @my_object = MyObject.find(params[:id]) begin result = @my_object.my_model_method(params) rescue Exceptions::CustomError => e flash.now[:error] = e.message redirect_to my_object_path(@my_object) and return end # ... rest irrelevant end How can I get a Minitest stub to raise this Error? it 'should show redirect on custom error' do my_object = FactoryGirl.create(:my

问题 I'm just learning Rails and would appreciate any help. I've looked at probably 10 tutorials for :remote => true on form_for and they all seem to copy each other (equally confusing). This tutorial is one of them: http://tech.thereq.com/post/18910961502/rails-3-using-form-remote-true-with-jquery-ujs My web app is pretty much all on one page, and my 'submit form' is inside a pop-up lightbox. This means that the form_for code is actually within my index.html.erb. It also means a new @playlist

问题 I'm just learning Rails and would appreciate any help. I've looked at probably 10 tutorials for :remote => true on form_for and they all seem to copy each other (equally confusing). This tutorial is one of them: http://tech.thereq.com/post/18910961502/rails-3-using-form-remote-true-with-jquery-ujs My web app is pretty much all on one page, and my 'submit form' is inside a pop-up lightbox. This means that the form_for code is actually within my index.html.erb. It also means a new @playlist

问题 I am trying to tidy up a process that uses multiple system calls from inside a ruby script executed using rubyw.exe (1.8.7). As far as I can understand the main reason for rubyw.exe is that it doesn't pop up a command prompt to distract the user. However it appears that the system calls from within that process still do generate these popups which is very distracting for the users of this process script. Does anyone know how to do this? There are lots of questions similar to this on SO but

问题 Ok folks, Rails 5 has really had its nuances differing from Rails 4. What I have going on is that every time I click the submit button on the form it reloads with the error Profile user must exist and Profile user can't be blank . The form loads fine including the nested models form, but for what ever reason it is failing to save the parent model before attempting to save the child model with the following output to the console: Puma starting in single mode... * Version 3.7.0 (ruby 2.2.6-p396

问题 I was going through ruby's Net::HTTP class. Every time I run this code from Net::HTTP doc #!/usr/bin/ruby require 'net/http' uri = URI('http://example.com/index.html') res = Net::HTTP.get_response(uri) # Headers res['Set-Cookie'] # => String res.get_fields('set-cookie') # => Array res.to_hash['set-cookie'] # => Array puts "Headers: #{res.to_hash.inspect}" # Status puts res.code # => '200' puts res.message # => 'OK' puts res.class.name # => 'HTTPOK' # Body puts res.body if res.response_body