Dileep Dileep - 4 months ago 12
AngularJS Question

How to update ng-repeat values in angular js?

I am new to angularjs,I have an array I am looping it through

ng-repeat
directive,and I have written code for copy,remove,and edit values in the array.if I want to remove or copy I can do it,but if I click on edit one popup box will appear there I want to edit the values those updated values should update in the array.how can I get it done ?

<!doctype html>
<html>
<head>
<title>Angular app</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.17/angular.min.js">
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<style type="text/css">
.listv{
margin-bottom: 30px;
}
.editpopup{
width: 250px;
height: 250px;
border: 1px solid black;
display: none;
position: absolute;
top: 0px;
left: 0px;
bottom: 0px;
right: 0px;

background-color:gray;
}
.editpopup-true{
display: block;
}
.editpopup-false{
display: none;
}
</style>
</head>
<body ng-app="myApp">
<div ng-controller="myCon">
<div ng-repeat="s in items" class="listv">
<span>{{s.id}}</span>
<span>{{s.pname}}</span>
<button ng-click="removeStudent($index)">remove</button>
<button ng-click="copyrow($index)">copy</button>
<button ng-click="editrow($index)">edit</button>
</div></br>

<div class="editpopup editpopup-{{istrue}} ">
<p>edit id:<input type="text" ng-model="editedid"></p>
<p>edit pname:<input type="text" ng-model="editedname"></p>
<button ng-click="save($index)">save</button>
<button ng-click="closepopup()">cancel</button>
</div>

</div>





var myApp=angular.module('myApp',[]);
myApp.controller('myCon',function($scope){
$scope.items=[{id:1,pname:'box1'},{id:2,pname:'box2'}, {id:3,pname:'box3'}];

$scope.removeStudent=function($index){
$scope.items.splice($index,1);
}
$scope.copyrow=function($index){

$scope.len=$scope.items.length;
$scope.ids=$scope.items[$index].id;
$scope.pnames=$scope.items[$index].pname

$scope.items.push({
id:$scope.len+1,
pname:$scope.pnames
});
}
$scope.editrow=function($index){
$scope.istrue=true;
$scope.editedid=$scope.items[$index].id;
$scope.editedname=$scope.items[$index].pname;
}
$scope.closepopup=function(){
$scope.istrue=false;

}
$scope.save=function($index){
$scope.istrue=false;
$scope.s.name=$scope.editedname;
}
});





here is jsfiddle

Answer

The easiest way is to use angular.copy to create a clone of the object when edit is clicked and then when save is clicked copy the data to the item in the array.

First initilize $scope.editedItem

$scope.editedItem = {};

For editrow we store the currently edited index in $index and then clone the data into $scope.editedItem.

$scope.editrow=function($index){
    $scope.istrue=true;
    $scope.$index = $index;
    angular.copy($scope.items[$index], $scope.editedItem);
}

Then in save we clone the data back into the object in the array:

$scope.save=function(){
    $scope.istrue=false;
    angular.copy($scope.editedItem, $scope.items[$scope.$index]) 
}

The view needs to be updated to instead use editedItem:

<div class="editpopup editpopup-{{istrue}} ">
    <p>edit id:<input type="text" ng-model="editedItem.id"></p>
    <p>edit pname:<input type="text" ng-model="editedItem.pname"></p>
    <button ng-click="save()">save</button>
    <button ng-click="closepopup()">cancel</button>
 </div>

JsFiddle