Deprecation Guide for BelongsToReference.push(DS.Model)

feature: ds-overhaul-references

Passing an instance of DS.Model to BelongsToReference#push has been deprecated. You should instead follow the pattern of model.set('relationship', value) to update a belongsTo relationship with an instance of DS.Model.

For example, if you have something like:

let post = this.store.peekRecord('post', 123);
let author = this.store.peekRecord('user', 456);

post.belongsTo('author').push(author);

You can remove this deprecation by refactoring your code to:

let post = this.store.peekRecord('post', 123);
let author = this.store.peekRecord('user', 456);

post.set('author', author);