Class: ROM::Associations::ManyToMany

Inherits:

Abstract

• Object
• Abstract
• ROM::Associations::ManyToMany

Defined in:

core/lib/rom/associations/many_to_many.rb

Overview

Abstract many-to-many association type

Direct Known Subclasses

OneToOneThrough, Memory::Associations::ManyToMany

Instance Attribute Summary

• #join_relation ⇒ Object readonly

Instance Method Summary

• #call ⇒ Object abstract

  Adapters should implement this method.

• #foreign_key ⇒ Symbol

  Return configured or inferred FK name.

• #through ⇒ Symbol

  Return join-relation name.

Instance Attribute Details

#join_relation ⇒ Object (readonly)

# File 'core/lib/rom/associations/many_to_many.rb', line 14

def join_relation
  @join_relation
end

Instance Method Details

#call ⇒ Object

This method is abstract.

Adapters should implement this method

Raises:

• (NotImplementedError)

# File 'core/lib/rom/associations/many_to_many.rb', line 28

def call(*)
  raise NotImplementedError
end

#foreign_key ⇒ Symbol

Return configured or inferred FK name

Returns:

• (Symbol)

# File 'core/lib/rom/associations/many_to_many.rb', line 37

def foreign_key
  definition.foreign_key || join_relation.foreign_key(source.name)
end

#through ⇒ Symbol

Return join-relation name

Returns:

• (Symbol)

# File 'core/lib/rom/associations/many_to_many.rb', line 46

def through
  definition.through
end