Can't include js file for client slide validation

问题

I installed gem 'client_side_validations', run bundle and run rails g client_side_validations:install

Installation DIDN"T create any js files, so I created them and put code from HitHub in my assets/javascript folder.

added line into application.js

  //= require rails.validations  

added line into application.html.erb

       <%= javascript_include_tag :defaults, "rails.validations", "rails.validations.custom" %>

and validation isn't working online(using Devise gem)

In my view:

 <%= form_for resource, ... , :validate => true do |f| %>

In GoogleChrome console logs:

   Failed to load resource: the server responded with a status of 404 (Not Found)
"/assets/javascripts/rails.validations.custom.js"
"/assets/javascripts/rails.validations.js"

What I missed ?

回答1:

When you run the command rails g client_side_validations:install it seems to only generate the initializer config/initializers/client_side_validations.rb.

However, on the github page under the "Install" section they mention the command for copying the javascript file to the project's assets: rails g client_side_validations:copy_assets

Note: If you run Rails >= 3.1 you don't need to add the javascript file in the layout anymore, it should be sufficient to have <%= javascript_include_tag "application" %> as long as the application.js contains the line //= require_tree . which includes all javascript files under app/assets/javascripts directory.

In the initializer client_side_validations.rb file you also need to uncomment the last block:

# Uncomment the following block if you want each input field to have the validation messages attached.
ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
  ...
end

Once you have done this you need to restart the server for the changes to take effect.

来源：https://stackoverflow.com/questions/11029197/cant-include-js-file-for-client-slide-validation