Module: DataMapper::Query::Conditions::RelationshipHandler

Included in:

EqualToComparison, InclusionComparison

Defined in:

lib/dm-core/query/conditions/comparison.rb

Overview

Included into comparisons which are capable of supporting Relationships.

Instance Method Summary

• #foreign_key_mapping ⇒ Hash

  Returns the conditions required to match the subject relationship.

• #relationship? ⇒ Boolean

  Returns whether this comparison subject is a Relationship.

Instance Method Details

#foreign_key_mapping ⇒ Hash

Returns the conditions required to match the subject relationship

Returns:

• (Hash)

# File 'lib/dm-core/query/conditions/comparison.rb', line 458

def foreign_key_mapping
  relationship = subject.inverse

  Query.target_conditions(value, relationship.source_key, relationship.target_key)
end

#relationship? ⇒ Boolean

Returns whether this comparison subject is a Relationship

Returns:

• (Boolean)

# File 'lib/dm-core/query/conditions/comparison.rb', line 449

def relationship?
  subject.kind_of?(Associations::Relationship)
end