class Mongoid::Association::Referenced::BelongsTo::Binding
Binding
class for belongs_to associations.
Public Instance Methods
bind_one()
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Binds the base object to the inverse of the association. This is so we are referenced to the actual objects themselves on both sides.
This case sets the association on the inverse object as well as the document itself.
@example Bind the documents.
game.person.bind(:continue => true) game.person = Person.new
@since 2.0.0.rc.1
# File lib/mongoid/association/referenced/belongs_to/binding.rb, line 24 def bind_one binding do check_polymorphic_inverses!(_target) bind_foreign_key(_base, record_id(_target)) bind_polymorphic_inverse_type(_base, _target.class.name) if inverse = _association.inverse(_target) if set_base_association if _base.referenced_many? _target.__send__(inverse).push(_base) else _target.set_relation(inverse, _base) end end end end end
unbind_one()
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Unbinds the base object and the inverse, caused by setting the reference to nil.
@example Unbind the document.
game.person.unbind(:continue => true) game.person = nil
@since 2.0.0.rc.1
# File lib/mongoid/association/referenced/belongs_to/binding.rb, line 49 def unbind_one binding do inverse = _association.inverse(_target) bind_foreign_key(_base, nil) bind_polymorphic_inverse_type(_base, nil) if inverse set_base_association if _base.referenced_many? _target.__send__(inverse).delete(_base) else _target.set_relation(inverse, nil) end end end end
Private Instance Methods
check_polymorphic_inverses!(doc)
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Check for problems with multiple inverse definitions.
@api private
@example Check for inverses errors.
binding.check_inverses!(doc)
@param [ Document
] doc The document to check.
@since 3.0.0
# File lib/mongoid/association/referenced/belongs_to/binding.rb, line 77 def check_polymorphic_inverses!(doc) inverses = _association.inverses(doc) if inverses.length > 1 && _base.send(_association.foreign_key).nil? raise Errors::InvalidSetPolymorphicRelation.new( _association.name, _base.class.name, _target.class.name ) end end