Managed to get checkboxes working without using v-model

Ok so I managed to create a computed property to pre-check any goals that's already linked to the post. I can also send data about the checkboxes now without using v-model.

But not able to merge both of these functions yet - the pre-checked goals don't appear in the data that comes from a function listening to the @change of the checkboxes. Could have solved it today if not for the downtime...