edge badge

AbstractController::Base is a low-level API. Nobody should be using it directly, and subclasses (like ActionController::Base) are expected to provide their own render method, since rendering means different things depending on the context.

Methods
A
C
H
I
M
P
S
Included Modules
Attributes
[R] abstract
[R] abstract?
Class Public methods
supports_path?()

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 171
def self.supports_path?
  true
end
Instance Public methods
abstract!()

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

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

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 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
available_action?(action_name)

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 163
def available_action?(action_name)
  _find_action_name(action_name).present?
end
clear_action_methods!()

#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 97
def clear_action_methods!
  @action_methods = nil
end
controller_path()

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 107
def controller_path
  @controller_path ||= name.sub(/Controller$/, '').underscore unless anonymous?
end
hidden_actions()

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 66
def hidden_actions
  []
end
internal_methods()

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 53
def internal_methods
  controller = self

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

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

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

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

# 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