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priority_filter ============== priority_filter is an extension of filters in Rails that allows you to set priorities to filters. The main benefit of this is you can now have a filter defined in a parent controller that gets executed after the same type of filter in a child controller. It does this by overriding all the *_filter methods and storing them in an array, and then rebuilding the filter chain whenever a filter is added or skipped. This causes a longer loading time, but it only has to do this when the controller is loaded, so after the application loads, there is no performance hit (that I can see). A more elegant solution would to be override the find_filter_append/prepend_position, but it wasn't working for me so I gave up and went with this method. Usage ===== All the *_filter methods now accept :priority as an option. :priority can be any positive integer, or :first (which gets changed to 0) or :last (will always be called after all other filters that are also not :last). Leaving out :priority sets the priority to 1. So if you install this plugin into an existing project, it (theoretically) will not change the filter execution order. prepend_*_filter simply implies :first. before_filter :filter, :priority => 5 after_filter :after, :priority => :last Example ======= class ApplicationController < ActionController::Base before_filter :foo, :priority => 5 before_filter :bar, :priority => :first end class FooController < ApplicationController before_filter :rah, :priority => 3 before_filter :moo, :priority => :first end class BarController < FooController before_filter :kek before_filter :bah, :priority => :last end Filter priorities (in execution order): :bar => 0 :moo => 0 :kek => 1 :rah => 3 :foo => 5 :bah => last Copyright (c) 2008 Jack Chen, under the MIT License