Module: Mongoid::Hierarchy::ClassMethods

Defined in:
lib/mongoid/hierarchy.rb

Instance Method Summary collapse

Instance Method Details

#hereditary? ⇒ true, false

Determines if the document is a subclass of another document.

Examples:

Check if the document is a subclass.

Square.hereditary?

Returns:

  • (true, false) —

    True if hereditary, false if not.



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# File 'lib/mongoid/hierarchy.rb', line 128

def hereditary?
  Mongoid::Document > superclass
end

#inherited(subclass) ⇒ Object

When inheriting, we want to copy the fields from the parent class and set the on the child to start, mimicking the behaviour of the old class_inheritable_accessor that was deprecated in Rails edge.

Examples:

Inherit from this class.

Person.inherited(Doctor)

Parameters:

  • subclass (Class) —

    The inheriting class.

Since:

  • 2.0.0.rc.6



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# File 'lib/mongoid/hierarchy.rb', line 142

def inherited(subclass)
  super
  subclass.fields = fields.dup
  subclass.pre_processed_defaults = pre_processed_defaults.dup
  subclass.post_processed_defaults = post_processed_defaults.dup
  subclass.scopes = scopes.dup
end