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2

I am trying to learn angularjs, and have hit a block in trying to databind to an array returned from a Rest API. I have a simple azure api returning an array of person objects. Service url is http://testv1.cloudapp.net/test.svc/persons.

My controller code looks like: 

angular.module("ToDoApp", ["ngResource"]);
function TodoCtrl($scope, $resource) {
$scope.svc = $resource('http://testv1.cloudapp.net/test.svc/persons', {
    callback: 'JSON_CALLBACK'
}, {
    get: {
        method: 'JSONP',
        isArray: true
    }
});
$scope.items = $scope.svc.get();
$scope.msg = "Hello World";
}

My html looks like:

<html>
<head></head>
<body>
<div ng-app="ToDoApp">
    <div ng-controller="TodoCtrl">
         <h1>{{msg}}</h1>

        <table class="table table-striped table-condensed table-hover">
            <thead>
                <th>Email</th>
                <th>First Name</th>
                <th>Last Name</th>
            </thead>
            <tbody>
                <tr ng-repeat="item in items">
                    <td>{{item.Email}}</td>
                    <td>{{item.FirstName}}</td>
                    <td>{{item.LastName}}</td>
                </tr>
            </tbody>
        </table>
    </div>
</div>
</body>
</html>

Question: The table in above html is not displaying any data. I can see the call to the api in Firebug, and can also see the JSON response from the api. What am I doing incorrectly that is causing the databinding to the REST api not work?

PS:JSFiddle demonstrating this issue is at: http://jsfiddle.net/jbliss1234/FBLFK/4/

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5 Answers

up vote 5 down vote

In order to handle arrays with the $resource service, it's suggested that you use the query method. As you can see below, the query method is built to handle arrays.

{ 'get':    {method:'GET'},
  'save':   {method:'POST'},
  'query':  {method:'GET', isArray:true},
  'remove': {method:'DELETE'},
  'delete': {method:'DELETE'} };

The code you should use in order to return this array to your scope is 

angular.module("ToDoApp", ["ngResource"]);

function TodoCtrl($scope, $resource) {
    var svc = $resource('http://testv1.cloudapp.net/test.svc/persons');
    $scope.items = svc.query();
    $scope.msg = "Hello World";
}

This assumes that your REST API is working and will return an array.

For further reading head to the docs

http://docs.angularjs.org/api/ngResource.$resource

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up vote 1 down vote

Use isArray param, if you have nested objects:

angular.module('privilegeService', ['ngResource']).
factory('Privilege', function ($resource) {
    return $resource('api/users/:userId/privileges', 
                     {userId: '@id'}, 
                     {'query':  {method:'GET', isArray:false}});
});

Than you can use container.object.property notation to access objects and its properties.

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The isArray param is already there. Setting it to true or false has no effect in this case. Can you please take a look at the jsfiddle and advise what exactly needs to be done to get the data bound. Thanks –  John Bliss Mar 31 '13 at 15:58
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up vote 0 down vote

I don't see any response from http://testv1.cloudapp.net/test.svc/persons Are you sure that the response is in JSONP, but not in regular JSON format? May be you need to add callback to the REST service.

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up vote 0 down vote

Not sure if we are having the same problem with json and REST, but this post solved my problem: array of strings not rendered correctly through angular resource

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1  
While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. –  Brian Feb 25 at 23:40
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up vote 0 down vote

Just wanted to cross-post my adaptation of a solution Aleksander gave on another stackoverflow question: http://stackoverflow.com/a/16387288/626810:

methodName: {method:'GET', url: "/some/location/returning/array", transformResponse: function (data) {return {list: angular.fromJson(data)} }}

So when I call this function:

var tempData = ResourceName.methodName(function(){
  console.log(tempData.list); // list will be the array in the expected format
});

Obviously this a little bulky if you need to GET arrays in multiple methods / resources, but it seems to work.

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