Tag: migration

Rails conditional migrations – ensure column does not exist

If you’re running into a rails migration exception, such as: column “x” of relation “y” already exists Then you can conditionally run the associated migration in the following way: YourModel.reset_column_information unless YourModel.column_names.include?(“the_column”) add_column(:your_models, :the_column, :boolean, :default=>true) end   Of course, it is probably best to address the underlying workflow issues that caused this issue to […]