Dynamic queryParams in Ember... is it possible?

I'm using Ember 2.4.1, and i'm currently having trouble trying to run queryParams with dynamic values.

Long story short, the application needs to filter a table by it's columns, but the columns are user generated through the application... So, i need first to get the column results to build a queryParams array.

Problem is that queryParams is executed before the model (i guess), and trying to update it in the afterModel hook, or with an Ember.computed results in a non-functional queryParams. =/

I thought about something with initializer... but the columns generated is based on the selected product... so i don't know if it will be effective.

Does some one here have ever faced some issue like this? Is there a good way to deal with this problem?