instance method `remove_column`

Ruby on Rails 2.3.18

Since v2.2.3

Available in: v2.2.3 v2.3.18 v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

remove_column(table_name, *column_names)

Removes the column(s) from the table definition.

Examples

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

Parameters

table_name req
column_names rest

Source

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 197
      def remove_column(table_name, *column_names)
        raise ArgumentError.new("You must specify at least one column name.  Example: remove_column(:people, :first_name)") if column_names.empty?
        column_names.flatten.each do |column_name|
          execute "ALTER TABLE #{quote_table_name(table_name)} DROP #{quote_column_name(column_name)}"
        end
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb line 197 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::SchemaStatements

Signature

Examples

Parameters