module ActiveRecord::AttributeMethods::PrimaryKey

Active Record Attribute Methods Primary Key ↑

Public Instance Methods

id ()

Returns the primary key column’s value. If the primary key is composite, returns an array of the primary key column values.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 20
def id
  _read_attribute(@primary_key)
end
id= (value)

Sets the primary key column’s value. If the primary key is composite, raises TypeError when the set value not enumerable.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 30
def id=(value)
  _write_attribute(@primary_key, value)
end
id? ()

Queries the primary key column’s value. If the primary key is composite, all primary key column values must be queryable.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 36
def id?
  _query_attribute(@primary_key)
end
id_before_type_cast ()

Returns the primary key column’s value before type cast. If the primary key is composite, returns an array of primary key column values before type cast.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 42
def id_before_type_cast
  attribute_before_type_cast(@primary_key)
end
id_in_database ()

Returns the primary key column’s value from the database. If the primary key is composite, returns an array of primary key column values from database.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 54
def id_in_database
  attribute_in_database(@primary_key)
end
id_was ()

Returns the primary key column’s previous value. If the primary key is composite, returns an array of primary key column previous values.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 48
def id_was
  attribute_was(@primary_key)
end
to_key ()

Returns this record’s primary key value wrapped in an array if one is available.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 13
def to_key
  key = id
  Array(key) if key
end