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Module: ActiveRecord::AttributeMethods::PrimaryKey

Relationships & Source Files
Namespace Children
Modules:
ClassMethods
Extension / Inclusion / Inheritance Descendants
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::ActiveSupport::Concern
Defined in: activerecord/lib/active_record/attribute_methods/primary_key.rb

Class Method Summary

::ActiveSupport::Concern - Extended

append_features, class_methods, included

Instance Attribute Summary

Instance Method Summary

Instance Attribute Details

#id (rw)

Returns the primary key value.

[ GitHub ] 

  


# File 'activerecord/lib/active_record/attribute_methods/primary_key.rb', line 17



def id
  if pk = self.class.primary_key
    sync_with_transaction_state
    _read_attribute(pk)
  end
end


  








  

    #id=(value)   (rw)
  



  

    

Sets the primary key value.


  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/attribute_methods/primary_key.rb', line 25



def id=(value)
  sync_with_transaction_state
  write_attribute(self.class.primary_key, value) if self.class.primary_key
end


  








  

    #id?  ⇒ Boolean  (rw)
  



  

    

Queries the primary key value.


  





  


  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/attribute_methods/primary_key.rb', line 31



def id?
  sync_with_transaction_state
  query_attribute(self.class.primary_key)
end


  







Instance Method Details



  

    #id_before_type_cast  
  



  

    

Returns the primary key value before type cast.


  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/attribute_methods/primary_key.rb', line 37



def id_before_type_cast
  sync_with_transaction_state
  read_attribute_before_type_cast(self.class.primary_key)
end


  








  

    #id_was  
  



  

    

Returns the primary key previous value.


  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/attribute_methods/primary_key.rb', line 43



def id_was
  sync_with_transaction_state
  attribute_was(self.class.primary_key)
end


  








  

    #to_key  
  



  

    

Returns this record's primary key value wrapped in an ::Array if one is available.


  



  [ GitHub ]


  

  


# File 'activerecord/lib/active_record/attribute_methods/primary_key.rb', line 10



def to_key
  sync_with_transaction_state
  key = self.id
  [key] if key
end