55cbb85fb7
:only and :except options for controller filters are now added before :if and :unless. This prevents running :if and :unless procs when not on the specified. Closes #11786.
220 lines
8.9 KiB
Ruby
220 lines
8.9 KiB
Ruby
module AbstractController
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module Callbacks
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extend ActiveSupport::Concern
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# Uses ActiveSupport::Callbacks as the base functionality. For
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# more details on the whole callback system, read the documentation
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# for ActiveSupport::Callbacks.
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include ActiveSupport::Callbacks
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included do
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define_callbacks :process_action,
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terminator: ->(controller,_) { controller.response_body },
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skip_after_callbacks_if_terminated: true
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end
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# Override AbstractController::Base's process_action to run the
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# process_action callbacks around the normal behavior.
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def process_action(*args)
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run_callbacks(:process_action) do
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super
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end
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end
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module ClassMethods
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# If :only or :except are used, convert the options into the
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# :unless and :if options of ActiveSupport::Callbacks.
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# The basic idea is that :only => :index gets converted to
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# :if => proc {|c| c.action_name == "index" }.
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#
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# ==== Options
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# * <tt>only</tt> - The callback should be run only for this action
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# * <tt>except</tt> - The callback should be run for all actions except this action
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def _normalize_callback_options(options)
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_normalize_callback_option(options, :only, :if)
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_normalize_callback_option(options, :except, :unless)
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end
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def _normalize_callback_option(options, from, to) # :nodoc:
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if from = options[from]
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from = Array(from).map {|o| "action_name == '#{o}'"}.join(" || ")
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options[to] = Array(options[to]).unshift(from)
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end
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end
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# Skip before, after, and around action callbacks matching any of the names
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# Aliased as skip_filter.
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#
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# ==== Parameters
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# * <tt>names</tt> - A list of valid names that could be used for
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# callbacks. Note that skipping uses Ruby equality, so it's
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# impossible to skip a callback defined using an anonymous proc
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# using #skip_filter
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def skip_action_callback(*names)
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skip_before_action(*names)
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skip_after_action(*names)
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skip_around_action(*names)
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end
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alias_method :skip_filter, :skip_action_callback
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# Take callback names and an optional callback proc, normalize them,
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# then call the block with each callback. This allows us to abstract
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# the normalization across several methods that use it.
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#
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# ==== Parameters
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# * <tt>callbacks</tt> - An array of callbacks, with an optional
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# options hash as the last parameter.
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# * <tt>block</tt> - A proc that should be added to the callbacks.
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#
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# ==== Block Parameters
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# * <tt>name</tt> - The callback to be added
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# * <tt>options</tt> - A hash of options to be used when adding the callback
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def _insert_callbacks(callbacks, block = nil)
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options = callbacks.extract_options!
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_normalize_callback_options(options)
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callbacks.push(block) if block
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callbacks.each do |callback|
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yield callback, options
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end
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end
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##
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# :method: before_action
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#
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# :call-seq: before_action(names, block)
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#
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# Append a callback before actions. See _insert_callbacks for parameter details.
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# Aliased as before_filter.
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##
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# :method: prepend_before_action
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#
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# :call-seq: prepend_before_action(names, block)
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#
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# Prepend a callback before actions. See _insert_callbacks for parameter details.
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# Aliased as prepend_before_filter.
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##
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# :method: skip_before_action
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#
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# :call-seq: skip_before_action(names)
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#
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# Skip a callback before actions. See _insert_callbacks for parameter details.
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# Aliased as skip_before_filter.
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##
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# :method: append_before_action
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#
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# :call-seq: append_before_action(names, block)
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#
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# Append a callback before actions. See _insert_callbacks for parameter details.
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# Aliased as append_before_filter.
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##
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# :method: after_action
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#
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# :call-seq: after_action(names, block)
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#
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# Append a callback after actions. See _insert_callbacks for parameter details.
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# Aliased as after_filter.
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##
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# :method: prepend_after_action
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#
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# :call-seq: prepend_after_action(names, block)
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#
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# Prepend a callback after actions. See _insert_callbacks for parameter details.
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# Aliased as prepend_after_filter.
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##
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# :method: skip_after_action
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#
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# :call-seq: skip_after_action(names)
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#
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# Skip a callback after actions. See _insert_callbacks for parameter details.
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# Aliased as skip_after_filter.
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##
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# :method: append_after_action
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#
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# :call-seq: append_after_action(names, block)
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#
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# Append a callback after actions. See _insert_callbacks for parameter details.
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# Aliased as append_after_filter.
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##
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# :method: around_action
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#
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# :call-seq: around_action(names, block)
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#
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# Append a callback around actions. See _insert_callbacks for parameter details.
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# Aliased as around_filter.
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##
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# :method: prepend_around_action
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#
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# :call-seq: prepend_around_action(names, block)
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#
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# Prepend a callback around actions. See _insert_callbacks for parameter details.
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# Aliased as prepend_around_filter.
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##
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# :method: skip_around_action
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#
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# :call-seq: skip_around_action(names)
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#
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# Skip a callback around actions. See _insert_callbacks for parameter details.
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# Aliased as skip_around_filter.
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##
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# :method: append_around_action
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#
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# :call-seq: append_around_action(names, block)
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#
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# Append a callback around actions. See _insert_callbacks for parameter details.
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# Aliased as append_around_filter.
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# set up before_action, prepend_before_action, skip_before_action, etc.
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# for each of before, after, and around.
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[:before, :after, :around].each do |callback|
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class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
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# Append a before, after or around callback. See _insert_callbacks
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# for details on the allowed parameters.
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def #{callback}_action(*names, &blk) # def before_action(*names, &blk)
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_insert_callbacks(names, blk) do |name, options| # _insert_callbacks(names, blk) do |name, options|
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set_callback(:process_action, :#{callback}, name, options) # set_callback(:process_action, :before, name, options)
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end # end
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end # end
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alias_method :#{callback}_filter, :#{callback}_action
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# Prepend a before, after or around callback. See _insert_callbacks
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# for details on the allowed parameters.
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def prepend_#{callback}_action(*names, &blk) # def prepend_before_action(*names, &blk)
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_insert_callbacks(names, blk) do |name, options| # _insert_callbacks(names, blk) do |name, options|
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set_callback(:process_action, :#{callback}, name, options.merge(:prepend => true)) # set_callback(:process_action, :before, name, options.merge(:prepend => true))
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end # end
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end # end
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alias_method :prepend_#{callback}_filter, :prepend_#{callback}_action
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# Skip a before, after or around callback. See _insert_callbacks
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# for details on the allowed parameters.
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def skip_#{callback}_action(*names) # def skip_before_action(*names)
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_insert_callbacks(names) do |name, options| # _insert_callbacks(names) do |name, options|
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skip_callback(:process_action, :#{callback}, name, options) # skip_callback(:process_action, :before, name, options)
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end # end
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end # end
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alias_method :skip_#{callback}_filter, :skip_#{callback}_action
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# *_action is the same as append_*_action
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alias_method :append_#{callback}_action, :#{callback}_action # alias_method :append_before_action, :before_action
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alias_method :append_#{callback}_filter, :#{callback}_action # alias_method :append_before_filter, :before_action
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RUBY_EVAL
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end
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end
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end
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end
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