Adding an existing object to a hasMany association doesn't persist after save()

[mattaddy]

As an example, let's say we have a Book and a Chapter.

App.Book = DS.Model.extend({
  title: DS.attr('string'),
  chapters: DS.hasMany('chapter')
});

App.Chapter = DS.Model.extend({
  title: DS.attr('string')
});

Calling addObject() on a book.chapters array, providing an existing, non-dirty chapter instance doesn't persist after saving the book. For example,

store.find('book', 1).then(function(book) {
  store.find('chapter', 1).then(function(chapter) {
    book.get('chapters').addObject(chapter);
    book.save();
  });
});

The above code doesn't update the book.chapters object in Firebase.

However, when "dirtying" the chapter object, it persists fine. For example,

store.find('book', 1).then(function(book) {
  store.find('chapter', 1).then(function(chapter) {
    book.get('chapters').addObject(chapter);
    chapter.set('title', 'Updated Chapter Title');  // dirtying the chapter saves the object to book.chapters
    book.save();
  });
});

The above code updates the book.chapters object in Firebase.

[aputinski]

@mattaddy this has to do with #41. The problem I'm having right now is that there is no way for the adapter to know when a relationship has been modified. I'm working on a temporary fix where I will cache relationships after each save so that I can check for added/removed items.

[aputinski]

@mattaddy should be fixed in v1.0.5

[mattaddy]

@aputinski thanks for all your work 😄