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NOTICE: official repository moved to https://github.com/malev/render_component. Components allow you to call other actions for their rendered response while executing another action

Home Page: http://rubyonrails.com/

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render_component's Introduction

Components allow you to call other actions for their rendered response while executing another action. You can either delegate
the entire response rendering or you can mix a partial response in with your other content.

  class WeblogController < ActionController::Base
    # Performs a method and then lets hello_world output its render
    def delegate_action
      do_other_stuff_before_hello_world
      render_component :controller => "greeter",  :action => "hello_world", :params => { :person => "david" }
    end
  end

  class GreeterController < ActionController::Base
    def hello_world
      render :text => "#{params[:person]} says, Hello World!"
    end
  end

The same can be done in a view to do a partial rendering:

  Let's see a greeting:
  <%= render_component :controller => "greeter", :action => "hello_world" %>

It is also possible to specify the controller as a class constant, bypassing the inflector
code to compute the controller class at runtime:

<%= render_component :controller => GreeterController, :action => "hello_world" %>

== When to use components

Components should be used with care. They're significantly slower than simply splitting reusable parts into partials and
conceptually more complicated. Don't use components as a way of separating concerns inside a single application. Instead,
reserve components to those rare cases where you truly have reusable view and controller elements that can be employed
across many applications at once.

So to repeat: Components are a special-purpose approach that can often be replaced with better use of partials and filters.

Copyright (c) 2007 David Heinemeier Hansson, released under the MIT license

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render_component's Issues

fails for rails 2.3.5

With rails 2.3.5 this plugin fails with
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/core_ext/module/aliasing.rb:33:in alias_method': undefined methodset_session_options' for class `ActionController::Base' (NameError)

There are blogs verifying the problem here:
http://dothingssimple.wordpress.com/2009/08/07/hello-world/
http://www.42.mach7x.com/2009/06/24/undefined-method-render_component-with-activescaffold-and-rails-2-3-2/

But the solution is use another (now deleted github repository)

Flash hash gets lost across redirects

I don't understand how or why but I just wasted hours trying to figure out why this was broken and finally narrowed it down to render_component. The problem went away when I removed render_component.

I'm using Rails 2.3.4/2.3.5.

This is fixed in http://github.com/robrasmussen/render_component . Please merge this in so the official version has the fix!

See http://www.mail-archive.com/[email protected]/msg02233.html

Problem with sweepers

Hi,

I discovered this error with ActiveScaffold:
If you have sweepers activated, you will get a NoMethodError, because Sweepers after action is called twice.
First time, it sets self.controller = nil, so second time it fails to get controller_name.

This behaviour is mentioned in http://dev.rubyonrails.org/ticket/6199, but since components were removed from rails it was never fixed there...

I updated this gem for Rails 5.x and 6.x

This is my fork: https://github.com/mathieujobin/render_component
This is new gem release: https://rubygems.org/gems/rails-render-component

rails / render_component Goto Github PK

render_component's Introduction

render_component's People

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render_component's Issues

fails for rails 2.3.5

Flash hash gets lost across redirects

Problem with sweepers

I updated this gem for Rails 5.x and 6.x

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