Method: Sequel::Schema::AlterTableGenerator#drop_foreign_key

Defined in:
lib/sequel/database/schema_generator.rb

#drop_foreign_key(name, opts = OPTS) ⇒ Object

Remove a foreign key and the associated column from the table. General options:

:name

The name of the constraint to drop. If not given, uses the same name that would be used by add_foreign_key with the same columns.

NOTE: If you want to drop only the foreign key constraint but keep the column, use the composite key syntax even if it is only one column.

drop_foreign_key(:artist_id) # DROP CONSTRAINT table_artist_id_fkey, DROP COLUMN artist_id
drop_foreign_key([:name]) # DROP CONSTRAINT table_name_fkey



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# File 'lib/sequel/database/schema_generator.rb', line 608

def drop_foreign_key(name, opts=OPTS)
  if !name.is_a?(Array) && opts[:foreign_key_constraint_name]
    opts = Hash[opts]
    opts[:name] = opts[:foreign_key_constraint_name]
  end
  drop_composite_foreign_key(Array(name), opts)
  drop_column(name) unless name.is_a?(Array)
end