# File actionpack/lib/abstract_controller/base.rb, line 34
def abstract!
  @abstract = true
end

Define a controller as abstract. See ::internal_methods for more details.

# File actionpack/lib/abstract_controller/base.rb, line 78
def action_methods
  @action_methods ||= begin
    # All public instance methods of this class, including ancestors
    methods = (public_instance_methods(true) -
      # Except for public instance methods of Base and its ancestors
      internal_methods +
      # Be sure to include shadowed public instance methods of this class
      public_instance_methods(false)).uniq.map { |x| x.to_s } -
      # And always exclude explicitly hidden actions
      hidden_actions.to_a

    # Clear out AS callback method pollution
    Set.new(methods.reject { |method| method =~ /_one_time_conditions/ })
  end
end

A list of method names that should be considered actions. This includes all public instance methods on a controller, less any internal methods (see internal_methods), adding back in any methods that are internal, but still exist on the class itself. Finally, hidden_actions are removed.

Returns

• Set - A set of all methods that should be considered actions.

# File actionpack/lib/abstract_controller/base.rb, line 97
def clear_action_methods!
  @action_methods = nil
end

::action_methods are cached and there is sometimes need to refresh them. clear_action_methods! allows you to do that, so next time you run ::action_methods, they will be recalculated

# File actionpack/lib/abstract_controller/base.rb, line 107
def controller_path
  @controller_path ||= name.sub(/Controller$/, '').underscore unless anonymous?
end

Returns the full controller name, underscored, without the ending Controller. For instance, MyApp::MyPostsController would return “my_app/my_posts” for controller_path.

Returns

• String

# File actionpack/lib/abstract_controller/base.rb, line 66
def hidden_actions
  []
end

The list of hidden actions. Defaults to an empty array. This can be modified by other modules or subclasses to specify particular actions as hidden.

Returns

• Array - An array of method names that should not be considered actions.

# File actionpack/lib/abstract_controller/base.rb, line 53
def internal_methods
  controller = self

  controller = controller.superclass until controller.abstract?
  controller.public_instance_methods(true)
end

A list of all internal methods for a controller. This finds the first abstract superclass of a controller, and gets a list of all public instance methods on that abstract class. Public instance methods of a controller would normally be considered action methods, so methods declared on abstract classes are being removed. (ActionController::Metal and ActionController::Base are defined as abstract)

# File actionpack/lib/abstract_controller/base.rb, line 112
def method_added(name)
  super
  clear_action_methods!
end

Refresh the cached ::action_methods when a new action_method is added.

# File actionpack/lib/abstract_controller/base.rb, line 171
def self.supports_path?
  true
end

Returns true if the given controller is capable of rendering a path. A subclass of AbstractController::Base may return false. An Email controller for example does not support paths, only full URLs.

# File actionpack/lib/abstract_controller/base.rb, line 146
def action_methods
  self.class.action_methods
end

Delegates to the class' action_methods

# File actionpack/lib/abstract_controller/base.rb, line 163
def available_action?(action_name)
  _find_action_name(action_name).present?
end

Returns true if a method for the action is available and can be dispatched, false otherwise.

Notice that action_methods.include?("foo") may return false and available_action?("foo") returns true because this method considers actions that are also available through other means, for example, implicit render ones.

Parameters

• action_name - The name of an action to be tested

Returns

• TrueClass, FalseClass

# File actionpack/lib/abstract_controller/base.rb, line 141
def controller_path
  self.class.controller_path
end

Delegates to the class' controller_path

# File actionpack/lib/abstract_controller/base.rb, line 128
def process(action, *args)
  @_action_name = action.to_s

  unless action_name = _find_action_name(@_action_name)
    raise ActionNotFound, "The action '#{action}' could not be found for #{self.class.name}"
  end

  @_response_body = nil

  process_action(action_name, *args)
end

Calls the action going through the entire action dispatch stack.

The actual method that is called is determined by calling method_for_action. If no method can handle the action, then an AbstractController::ActionNotFound error is raised.

Returns

• self