Class: Mongoid::Relations::Bindings::Referenced::In

Inherits:
Mongoid::Relations::Binding show all
Defined in:
lib/mongoid/relations/bindings/referenced/in.rb

Overview

Binding class for all referenced_in relations.

Instance Attribute Summary

Attributes inherited from Mongoid::Relations::Binding

#base, #metadata, #target

Instance Method Summary collapse

Methods inherited from Mongoid::Relations::Binding

#binding, #initialize

Constructor Details

This class inherits a constructor from Mongoid::Relations::Binding

Instance Method Details

#bind_one ⇒ Object

Binds the base object to the inverse of the relation. This is so we are referenced to the actual objects themselves on both sides.

This case sets the metadata on the inverse object as well as the document itself.

Examples:

Bind the documents.

game.person.bind(:continue => true)
game.person = Person.new

Since:

  • 2.0.0.rc.1



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# File 'lib/mongoid/relations/bindings/referenced/in.rb', line 21

def bind_one
  binding do
    check_inverses!(target)
    bind_foreign_key(base, record_id(target))
    bind_polymorphic_inverse_type(base, target.class.name)
    if inverse = metadata.inverse(target)
      if set_base_metadata
        bind_inverse_of_field(base, base.metadata_name)
        if base.referenced_many?
          target.__send__(inverse).push(base) unless Mongoid.using_identity_map?
        else
          target.do_or_do_not(metadata.inverse_setter(target), base)
        end
      end
    end
  end
end

#unbind_one ⇒ Object

Unbinds the base object and the inverse, caused by setting the reference to nil.

Examples:

Unbind the document.

game.person.unbind(:continue => true)
game.person = nil

Since:

  • 2.0.0.rc.1



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# File 'lib/mongoid/relations/bindings/referenced/in.rb', line 47

def unbind_one
  binding do
    inverse = metadata.inverse(target)
    if !inverse && metadata.inverse_of_field
      inverse = base.__send__(metadata.inverse_of_field)
    end
    bind_foreign_key(base, nil)
    bind_polymorphic_inverse_type(base, nil)
    bind_inverse_of_field(base, nil)
    if inverse
      set_base_metadata
      if base.referenced_many?
        target.__send__(inverse).delete(base)
      else
        target.__send__("#{inverse}=", nil)
      end
    end
  end
end