applicationcontroller | 易学教程

“undefined method” when calling helper method from controller in Rails

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问题 Does anyone know why I get undefined method `my_method' for #<MyController:0x1043a7410> when I call my_method("string") from within my ApplicationController subclass? My controller looks like class MyController < ApplicationController def show @value = my_method(params[:string]) end end and my helper module ApplicationHelper def my_method(string) return string end end and finally, ApplicationController class ApplicationController < ActionController::Base after_filter :set_content_type helper

Using “ApplicationController.new.render_to_string” in a Rails api app (config.api_only = true)

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问题 I have a Rails 5 app build as an api app: # config/application.rb module MyApp class Application < Rails::Application config.api_only = true end end In one of my controller actions I need to render some Ruby flavoured html, and then serve it back in the json response. A standard Rails app do this: # app/controllers/my_controller.rb def my_action html = ApplicationController.new.render_to_string("my_erb_or_haml_file", locals: {foo: "bar"}, layout: false) render :json => {html: html}, :status =

Rails 3.0 Engine - Execute code in ActionController

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问题 I am upgrading my Rails plugin to be an engine that works with the latest 3.0RC1 release and I'm having a bit of trouble figuring out the best (and most correct) way to extend ActionController . I've seen this post by DHH and this question here on SO, but my question is more about how to properly call code within the ActionController . For instance, I need to call the following within my engine's controller: class ApplicationController < ActionController::Base helper :all before_filter

How do you route an action to the application controller in Rails 3?

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问题 I am using the gem rails3-jquery-autocomplete and had no problems with it, however I have now moved my autocomplete form into the application template and therefore the ajax calls are now being dealt by the application controller, so my routes have changed from: home/autocomplete_category_name and now need to have the home removed and the path from: home_autocomplete_category_name_path to: autocomplete_category_name_path Anybody got any ideas? Still learning the ins and outs of Rails so this

Rails 3.0 Engine - Execute code in ActionController

阅读更多关于 Rails 3.0 Engine - Execute code in ActionController

I am upgrading my Rails plugin to be an engine that works with the latest 3.0RC1 release and I'm having a bit of trouble figuring out the best (and most correct) way to extend ActionController . I've seen this post by DHH and this question here on SO, but my question is more about how to properly call code within the ActionController . For instance, I need to call the following within my engine's controller: class ApplicationController < ActionController::Base helper :all before_filter :require_one_user after_filter :store_location private def require_one_user # Code goes here end def store

How can I extend ApplicationController in a gem?

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I thought I'd come up with a slick way to extend ApplicationController in a Rails 3.x gem. In my gem's lib/my_namespace/my_controller.rb , I had: class MyNamespace::MyController < ApplicationController before_filter :some_method after_filter :another_method def initialize # getting classname of the subclass to use for lookup of the associated model, etc. # and storing the model_class in an instance variable # ... end # define :some_method, :another_method, etc. # ... private attr_accessor :subclass_defined_during_initialize # etc. # etc. end but when the Gem is loaded, app/controllers

“undefined method” when calling helper method from controller in Rails

阅读更多关于 “undefined method” when calling helper method from controller in Rails

Does anyone know why I get undefined method `my_method' for #<MyController:0x1043a7410> when I call my_method("string") from within my ApplicationController subclass? My controller looks like class MyController < ApplicationController def show @value = my_method(params[:string]) end end and my helper module ApplicationHelper def my_method(string) return string end end and finally, ApplicationController class ApplicationController < ActionController::Base after_filter :set_content_type helper :all helper_method :current_user_session, :current_user filter_parameter_logging :password protect_from

How can I extend ApplicationController in a gem?

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问题 I thought I'd come up with a slick way to extend ApplicationController in a Rails 3.x gem. In my gem's lib/my_namespace/my_controller.rb , I had: class MyNamespace::MyController < ApplicationController before_filter :some_method after_filter :another_method def initialize # getting classname of the subclass to use for lookup of the associated model, etc. # and storing the model_class in an instance variable # ... end # define :some_method, :another_method, etc. # ... private attr_accessor