Can I override a query in DJango?

Question

I know you can override delete and save methods in DJango models, but can you override a select query somehow to intercept and change a parameter slightly. I have a hashed value I want to check for, and would like to keep the hashing internal to the model.

Answer 1

You don't make it absolutely clear what you want to do, but I think there are two possibilities here.

The general way to override the database query is to define a custom Manager, and override get_query_set method. You can add extra filtering criteria here.

However, if I understand your question properly, you are trying to change the query for a particular field only. In this case, I think the better answer is to define a custom Field. Here you can override get_db_prep_lookup which allows you to customise the value that is used in the database lookup.

Answer 2

if you're using 1.2, you can try raw(), which seems like exactly what you're looking for.