method

remove_check_constraint

v7.0.0 - Show latest stable - Class: ActiveRecord::ConnectionAdapters::SchemaStatements

remove_check_constraint(table_name, expression = nil, **options)

public

Removes the given check constraint from the table.

remove_check_constraint :products, name: "price_check"

The expression parameter will be ignored if present. It can be helpful to provide this in a migration’s change method so it can be reverted. In that case, expression will be used by #add_check_constraint.

# File activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb, line 1208
      def remove_check_constraint(table_name, expression = nil, **options)
        return unless supports_check_constraints?

        chk_name_to_delete = check_constraint_for!(table_name, expression: expression, **options).name

        at = create_alter_table(table_name)
        at.drop_check_constraint(chk_name_to_delete)

        execute schema_creation.accept(at)
      end

remove_check_constraint

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