Cannot set property of nested array by index dynamically

[daveed80]

I'm attempting to set a property of a nested array dynamically but am unable to do so.

Model :

{"Alias":"sample","Id":0,
Traits: [
{"AttrValue":null},
{"AttrValue":null}
]
}

This of course works fine:

// this.model.set({ 'Traits[0].AttrValue': 'test' });

This does not:

// var i = 2;
// var prop = 'Traits[' + i + '].AttrValue';
// this.model.set({' prop ' : 'test'});

I'm sure I just can't see the sailboat at the moment (exhaustion) so any help would be greatly appreciated.

Thanks in advance!

[afeld]

Figure it out?

[daveed80]

Thanks so much for the reply!

Well, both yes and no...

I just realized I can do:

// var traits = this.model.get('Traits');
// traits[0].AttrValue = 'test';
// this.model.set('Traits', traits);

What I would inevitably like to do is find the 'trait' object from the array by 'AttrName', and set it directly, avoiding needing to know the index and still updating the top level model.

Any suggestions?

[daveed80]

By the way, excellent work on this!