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Active Record Attribute Methods Primary Key

Namespace
Methods
I
T

Instance Public methods

id()

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

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 18
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.

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 28
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.

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 34
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.

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 40
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.

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 52
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.

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 46
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.

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 11
def to_key
  key = id
  Array(key) if key
end