angularjs - meteor angular collection find method not working -

i'm trying optimize angular/meteor code. have collection

customers = new mongo.collection("customers");

and way displaying them was:

ng-repeat="customer in customercontroller.customers | filter: {customerstore: mystore} ">

and in customercontroller

this.customers = $meteor.collection(customers);

this approach (while works) starting take lot of memory on client's server adding more , more stores.

so tried filter server side before sending information client.

new code:

collection code same

customers = new mongo.collection("customers");

ng-repeat code different

ng-repeat="customer in customercontroller.getcustomers(mystore) ">

and controller has method:

    this.getcustomers = function(findbystore){         return customers.find({customerstore.$ : findbystore});     } 

the problem returns new collection each time, angular sees different object , tries re-render page.

https://docs.angularjs.org/error/$rootscope/infdig?p0=10&p1=%5b%5b%7b%22msg%22:%22fn:%20regularinterceptedexpression%22,%22newval%22:21,%22oldval%22:19%7d%5d,%5b%7b%22msg%22:%22fn:%20regularinterceptedexpression%22,%22newval%22:23,%22oldval%22:21%7d%5d,%5b%7b%22msg%22:%22fn:%20regularinterceptedexpression%22,%22newval%22:25,%22oldval%22:23%7d%5d,%5b%7b%22msg%22:%22fn:%20regularinterceptedexpression%22,%22newval%22:27,%22oldval%22:25%7d%5d,%5b%7b%22msg%22:%22fn:%20regularinterceptedexpression%22,%22newval%22:29,%22oldval%22:27%7d%5d%5d

one common mistake binding function generates new array every time called.

someone suggested try

return $meteor.collection(customers.find({'customerstore.$' : findbystore})); 

but error

typeerror: first argument of $meteorcollection must function or have find function property.