method

foreign_key_exists?

v7.0.0 - Show latest stable - 0 notes - Class: Table

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0
3.0.9
3.1.0
3.2.1
3.2.8
3.2.13
4.0.2
4.1.8
4.2.1
4.2.7
4.2.9
5.0.0.1
5.1.7
5.2.3
6.0.0 (0)
6.1.3.1 (0)
6.1.7.7 (0)
7.0.0 (0)
7.1.3.2 (0)
7.1.3.4 (0)
What's this?

foreign_key_exists?(*args, **options) public

Checks to see if a foreign key exists.

t.foreign_key(:authors) unless t.foreign_key_exists?(:authors)

See {connection.foreign_key_exists?}[rdoc-ref:SchemaStatements#foreign_key_exists?]

Show source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb, line 804
      def foreign_key_exists?(*args, **options)
        @base.foreign_key_exists?(name, *args, **options)
      end

foreign_key_exists?

Related methods