How to filter (key, value) with ng-repeat in AngularJs?

How to filter (key, value) with ng-repeat in AngularJs?

I am trying to do something like :

{{k}} {{v.pos}}

AngularJs Part:
function TestCtrl($scope)
{
$scope.items = {
‘A2F0C7’:{‘secId’:’12345′, ‘pos’:’a20′},
‘C8B3D1’:{‘pos’:’b10′}
};

$scope.hasSecurityId = function(k,v)
{
return v.hasOwnProperty(‘secId’);
}
}

But somehow, it is showing me all items. How can I filter on (key,value) ?

Solutions/Answers:

Solution 1:

Angular filters can only be applied to arrays and not objects, from angular’s API –

“Selects a subset of items from array and returns it as a new array.”

You have two options here:
1) move $scope.items to an array or –
2) pre-filter the ng-repeat items, like this:

<div ng-repeat="(k,v) in filterSecId(items)">
    {{k}} {{v.pos}}
</div>

And on the Controller:

$scope.filterSecId = function(items) {
    var result = {};
    angular.forEach(items, function(value, key) {
        if (!value.hasOwnProperty('secId')) {
            result[key] = value;
        }
    });
    return result;
}

jsfiddle: http://jsfiddle.net/bmleite/WA2BE/

Solution 2:

My solution would be create custom filter and use it:

app.filter('with', function() {
  return function(items, field) {
        var result = {};
        angular.forEach(items, function(value, key) {
            if (!value.hasOwnProperty(field)) {
                result[key] = value;
            }
        });
        return result;
    };
});

And in html:

 <div ng-repeat="(k,v) in items | with:'secId'">
        {{k}} {{v.pos}}
 </div>

Solution 3:

Also you can use ng-repeat with ng-if:

<div ng-repeat="(key, value) in order" ng-if="value > 0">

Solution 4:

Or simply use

ng-show="v.hasOwnProperty('secId')"

See updated solution here:

http://jsfiddle.net/RFontana/WA2BE/93/

Solution 5:

You can simply use angular.filter module, and then you can filter even by nested properties.
see: jsbin
2 Examples:


JS:

angular.module('app', ['angular.filter'])
  .controller('MainCtrl', function($scope) {
  //your example data
  $scope.items = { 
    'A2F0C7':{ secId:'12345', pos:'a20' },
    'C8B3D1':{ pos:'b10' }
  };
  //more advantage example
  $scope.nestedItems = { 
    'A2F0C7':{
      details: { secId:'12345', pos:'a20' }
    },
    'C8B3D1':{
      details: { pos:'a20' }
    },
    'F5B3R1': { secId:'12345', pos:'a20' }
  };
});

HTML:

  <b>Example1:</b>
  <p ng-repeat="item in items | toArray: true | pick: 'secId'">
    {{ item.$key }}, {{ item }}
  </p>

  <b>Example2:</b>
  <p ng-repeat="item in nestedItems | toArray: true | pick: 'secId || details.secId' ">
    {{ item.$key }}, {{ item }}
  </p> 

Solution 6:

It is kind of late, but I looked for e similar filter and ended using something like this:

<div ng-controller="TestCtrl">
 <div ng-repeat="(k,v) in items | filter:{secId: '!!'}">
   {{k}} {{v.pos}}
 </div>
</div>