Module: Mongoid::Relations::Polymorphic::ClassMethods

Defined in:
lib/mongoid/relations/polymorphic.rb

Instance Method Summary collapse

Instance Method Details

#polymorph(metadata) ⇒ Class

Attempts to set up the information needed to handle a polymorphic relation, if the metadata checks out.

Examples:

Set up the polymorphic information.

Movie.polymorph(metadata)

Parameters:

  • metadata (Metadata) —

    The relation metadata.

Returns:

  • (Class) —

    The class being set up.

Since:

  • 2.0.0.rc.1



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# File 'lib/mongoid/relations/polymorphic.rb', line 27

def polymorph(metadata)
  if metadata.polymorphic?
    self.polymorphic = true
    if metadata.relation.stores_foreign_key?
      field(metadata.inverse_type, type: String)
      field(metadata.inverse_of_field, type: Symbol)
    end
  end
  self
end