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module ActionController #:nodoc:
# Actions that fail to perform as expected throw exceptions. These
# exceptions can either be rescued for the public view (with a nice
# user-friendly explanation) or for the developers view (with tons of
# debugging information). The developers view is already implemented by
# the Action Controller, but the public view should be tailored to your
# specific application.
#
# The default behavior for public exceptions is to render a static html
# file with the name of the error code thrown. If no such file exists, an
# empty response is sent with the correct status code.
#
# You can override what constitutes a local request by overriding the
# <tt>local_request?</tt> method in your own controller. Custom rescue
# behavior is achieved by overriding the <tt>rescue_action_in_public</tt>
# and <tt>rescue_action_locally</tt> methods.
module Rescue
extend ActiveSupport::Concern
included do
include ActiveSupport::Rescuable
end
module ClassMethods
# This can be removed once we can move action(:_rescue_action) into middlewares.rb
# Currently, it does controller.method(:rescue_action), which is hiding the implementation
# difference between the old and new base.
def rescue_action(env)
action(:_rescue_action).call(env)
end
end
attr_internal :rescued_exception
private
def method_for_action(action_name)
return action_name if self.rescued_exception = request.env.delete("action_dispatch.rescue.exception")
super
end
def _rescue_action
rescue_with_handler(rescued_exception) || raise(rescued_exception)
end
def process_action(*)
super
rescue Exception => exception
self.rescued_exception = exception
_rescue_action
end
end
end
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