Rails, get column name of value

Question

This might be a little odd, but how can I get the column name from object in my model?

For example, I have a table which happens to have all 50 states in it as separate columns (I know, I know that could be way more efficient), so they look like:

al_allowed, ak_allowed, etc...

These columns are booleans, but I wanted to know in my model how to get the column names?, for example if for a particular record (in this case Campaigns), I want to see which states are checked off, and if they are True, I want to push the states abbreviation(the column name) into an array.

Answer 1

You can get an array of column names from an ActiveRecord model by calling the column_names method. It's a class method, not an instance method, so you would use Campaign.column_names.