method

remove_columns

v7.1.3.4 - Show latest stable - Class: ActiveRecord::ConnectionAdapters::SchemaStatements

remove_columns(table_name, *column_names, type: nil, **options)

public

Removes the given columns from the table definition.

remove_columns(:suppliers, :qualification, :experience)

type and other column options can be passed to make migration reversible.

remove_columns(:suppliers, :qualification, :experience, type: :string, null: false)

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 659
      def remove_columns(table_name, *column_names, type: nil, **options)
        if column_names.empty?
          raise ArgumentError.new("You must specify at least one column name. Example: remove_columns(:people, :first_name)")
        end

        remove_column_fragments = remove_columns_for_alter(table_name, *column_names, type: type, **options)
        execute "ALTER TABLE #{quote_table_name(table_name)} #{remove_column_fragments.join(', ')}"
      end

remove_columns

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