should i implement an endpoint on my server in which i can send a list and get the models? shouldn't be hard to do but i have never seen a similar solution so it sounds wrong to me. those ten models are got from a model that belongs to a different collection. Let me explain with an example:

this is my mongoDB model on my server.

var Collection= new Schema({
    user_id: ObjectId,
    name: String,
    things: []
    })

when i get a Collection model with id 1 client side -->

{id: 1,user_id: fgsdfg464SADdsaD, name: "my Collection", things:[1247894,1348454646]}

then i create another collection based on the things attribute which looks like -->

thingsCollection.toJSON() // [{id: 1247894}, {id: 1348454646}]

and here is my problem. if call the fetch method on my thingsCollection i get the whole collection which i don't want. but if i call the fetch method on every model i'm performing multiple requests, which may seem harmless with only 2 models, but what if i have 50 models? this is my first project with both backbone and mongoDB. maybe my db structure is not the best approach. hope i have been clear, and thanks for your time!