Two way data binding with ng-grid - angularjs

Question

I want to bind my ng-grid celltemplate to html textbox ( I am having ng-grid , which displays the data,below that I want to add a textbox, so that as I type something in textbox, the values should get update in cell Template of ng-grid).
Here is my html page:
<div ng-controller="bulkAssign" >
<form name="signup_form" method="POST">
<div style=" border: 1px solid rgb(212,212,212);
width: 1000px;
height: 200px;" ng-grid="gridUser">
</div>
<p><b>Editing grid</b></p>
<div class="gridStyle" ng-grid="gridOptions" data-ng-click="testSeletion()"></div>
<label>Edit grid from textbox</label>
<input type="number" name="assignTo" ng-model="assignTo" placeholder="Assign order to" class="form-control" >
</form>
</div>
Here is my controller:
$scope.gridOptions = {
data: 'names',
enableCellSelection: false,
enableRowSelection: true,
showSelectionCheckbox: true,
multiSelect: true ,
columnDefs: [
{
field: 'orderId',
displayName: 'OrderId',
enableCellEdit: false,
cellTemplate:'<div class="ngCellText" ng-class="col.colIndex()"><a ng-click="loadById(row)">{{row.getProperty(col.field)}}</a></div>'
},
{field: 'trackingId', displayName: 'trackingId', enableCellEdit: false, cellTemplate:'<div class="ngCellText" ng-class="col.colIndex()"><a ng-click="loadById(row)">{{row.getProperty(col.field)}}</a></div>' },
{field: 'orderTitle', displayName: 'OrderTitle', enableCellEdit: false},
{field:'customerName', displayName:'CustomerName', enableCellEdit: false},
{field:'customerContactno', displayName:'ContactNo', enableCellEdit: false},
{field:'assignTo', displayName:'assignTo', enableCellEdit:true,cellTemplate:'<input type="number">'}
],
selectedItems: $scope.mySelections,
filterOptions: $scope.filterOptions
};
My question is after entering value in textbox, when i click button, is it possible to update values in ng-grid celltemplate?