method

remove_column

v3.2.13 - Show latest stable - 0 notes - Class: ActiveRecord::ConnectionAdapters::SchemaStatements

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What's this?

remove_column(table_name, *column_names) public

Removes the column(s) from the table definition.

Examples

remove_column(:suppliers, :qualification)
remove_columns(:suppliers, :qualification, :experience)

Show source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 271
      def remove_column(table_name, *column_names)
        if column_names.flatten!
          message = 'Passing array to remove_columns is deprecated, please use ' +
                    'multiple arguments, like: `remove_columns(:posts, :foo, :bar)`'
          ActiveSupport::Deprecation.warn message, caller
        end

        columns_for_remove(table_name, *column_names).each do |column_name|
          execute "ALTER TABLE #{quote_table_name(table_name)} DROP #{column_name}"
        end
      end

remove_column

Related methods

Examples