Manually reload async belongsTo relationship

[jcbvm]

It would be nice to have an option to manually reload a belongsTo relationship the same way we can reload a hasMany relationship (model.get('relationship').reload()).

Currently we'll have to do it this way:

model.get('relationship').then(function(relationship) {
    relationship.reload();
});

The problem with this is that we first have to load it before we can reload it which may cause loading it twice.

(Also reloading it this way does not work when the belongsTo has a link.)

[rhinon]

We hit this today as well. Reloading after resolving the relationship does not use the belongsTo link.

[jcbvm]

I still opt for a reloadRelationship function. So instead of calling reload on the relationship itself, we should be able to call reload from it's parent which will take the context of the parent into account. This way, reloading can check for links.

[igorT]

We definitely want to support this, here is a RFC that tracks this emberjs/rfcs#57

[jcbvm]

Thanks, will keep an eye on it!

[pangratz]

I think this issue can be closed since an initial implementation of references has been merged into master. Having the ds-references feature enabled, a relationship can be reloaded via model.belongsTo("family").reload() and model.hasMany("children").reload().

[fivetanley]

I agree with @pangratz. Keep an eye out for references work.