method

remove_reference

v5.2.3 - Show latest stable - Class: ActiveRecord::ConnectionAdapters::SchemaStatements

remove_reference(table_name, ref_name, foreign_key: false, polymorphic: false, **options)

public

Removes the reference(s). Also removes a type column if one exists. #remove_reference and #remove_belongs_to are acceptable.

Remove the reference

remove_reference(:products, :user, index: true)

Remove polymorphic reference

remove_reference(:products, :supplier, polymorphic: true)

Remove the reference with a foreign key

remove_reference(:products, :user, index: true, foreign_key: true)

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 893
      def remove_reference(table_name, ref_name, foreign_key: false, polymorphic: false, **options)
        if foreign_key
          reference_name = Base.pluralize_table_names ? ref_name.to_s.pluralize : ref_name
          if foreign_key.is_a?(Hash)
            foreign_key_options = foreign_key
          else
            foreign_key_options = { to_table: reference_name }
          end
          foreign_key_options[:column] ||= "#{ref_name}_id"
          remove_foreign_key(table_name, foreign_key_options)
        end

        remove_column(table_name, "#{ref_name}_id")
        remove_column(table_name, "#{ref_name}_type") if polymorphic
      end

remove_reference

Remove the reference

Remove polymorphic reference

Remove the reference with a foreign key

Related methods