method

foreign_key_exists?

rails latest stable - Class: ActiveRecord::ConnectionAdapters::Table

foreign_key_exists?(*args)

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?]

# File activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb, line 630
      def foreign_key_exists?(*args) # :nodoc:
        @base.foreign_key_exists?(name, *args)
      end

foreign_key_exists?

Method not available on this version

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