javascript - Changing ng-model value when using ng-repeat and $index -

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i have set of divs, inside ng-repeat. when use ng-model these, updating when change value of model function in controller. i.e., if change model, divs reflecting same value.

html:

<tbody ng-repeat="aw in aws"> <div ng-model="currentvalue" ng-init="initializeselects(aw.id)">{{currentvalue}}</div>

controller code:

$scope.initializeselects = function(awid) {  $scope.currentvalue = "read"; }

i tried changing code to:

   <tbody ng-repeat="(i, aw) in aws track $index">  <div ng-model="currentvalue[i]" ng-init="initializeselects(aw.id, i)">{{currentvalue[i]}}</div>

and 

$scope.initializeselects = function(awid, i) {      $scope.currentvalue[i] = "read"; }

in case, currentvalue undefined , model value can not changed. why undefined?

any inputs helpful, in advance!


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