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module AbstractController
class Base
attr_internal :response_body
attr_internal :response_obj
attr_internal :action_name
class << self
attr_reader :abstract
def abstract!
@abstract = true
end
alias_method :abstract?, :abstract
def internal_methods
controller = self
controller = controller.superclass until controller.abstract?
controller.public_instance_methods(true)
end
def process(action)
new.process(action.to_s)
end
def hidden_actions
[]
end
def action_methods
@action_methods ||=
# All public instance methods of this class, including ancestors
public_instance_methods(true).map { |m| m.to_s }.to_set -
# Except for public instance methods of Base and its ancestors
internal_methods.map { |m| m.to_s } +
# Be sure to include shadowed public instance methods of this class
public_instance_methods(false).map { |m| m.to_s } -
# And always exclude explicitly hidden actions
hidden_actions
end
end
abstract!
def initialize
self.response_obj = {}
end
def process(action_name)
unless respond_to_action?(action_name)
raise ActionNotFound, "The action '#{action_name}' could not be found"
end
@_action_name = action_name
process_action
self
end
private
def action_methods
self.class.action_methods
end
# It is possible for respond_to?(action_name) to be false and
# respond_to?(:action_missing) to be false if respond_to_action?
# is overridden in a subclass. For instance, ActionController::Base
# overrides it to include the case where a template matching the
# action_name is found.
def process_action
if respond_to?(action_name) then send(action_name)
elsif respond_to?(:action_missing, true) then action_missing(action_name)
end
end
# Override this to change the conditions that will raise an
# ActionNotFound error. If you accept a difference case,
# you must handle it by also overriding process_action and
# handling the case.
def respond_to_action?(action_name)
action_methods.include?(action_name) || respond_to?(:action_missing, true)
end
end
end
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