angularjs - Update the model and selected option of a select that is generated using ng-options -

unfortunately i'm going round in circle trying work out - appreciated.

i update model , selected option of select generated using ng-options.

here values options:

var blahoptionvalues = [   {valueformodel: '1', optiontext: 'a'},   {valueformodel: '2', optiontext: 'b'},   {valueformodel: '3', optiontext: 'c'}, ] 

here view:

<select ng-model="blahmodel" ng-options="item.valueformodel item.optiontext item in blahoptionvalues"></select> 

as result of event, how update "blahmodel" relevant value? update selected value in view well?

yes, update view well. please check demo in plunker: link: http://plnkr.co/edit/7xvrn7gmfkrjs7e4fvuh?p=preview`

var app = angular.module('myapp', []);  app.controller('myctrl', function($scope) {    $scope.blahoptionvalues = [        {valueformodel: '1', optiontext: 'a'},        {valueformodel: '2', optiontext: 'b'},        {valueformodel: '3', optiontext: 'c'},      ];          $scope.blahmodel = '2';          $scope.update = function(){            $scope.blahmodel = '1';    };  });

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>  <div ng-app="myapp" ng-controller="myctrl">{{blahmodel}}      <select ng-model="blahmodel" ng-options="item.valueformodel item.optiontext item in blahoptionvalues"></select>      <button ng-click="update()" >update</button>    </div>

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