Upgrade rails 4.1 to 4.2 column name issue <p>I'm running a few years old pretty big Rails 4.1 App, where one of the central models has a column called <code>model_name</code>. </p> <p>After the failed attempt to upgrade the app to rails 4.2, we have found out, that this column name is actually a rails reserved word. This did not come to our attention before, since the rails method which used the name, was a private method. Now, since rails 4.2 this is public, and rails complains big time over the naming confusion. </p> <p>I really really really don't wanna rename the column, since it's referenced everywhere in our application, even in a lot of serialized data, historic URL's etc.</p> <p>Any suggestions on an alternative upgrade procedure other than renaming the column?</p>