Have a set of objects in an array (items array) that have property
item_id:
[{item_id:1,...},{item_id:2,...}...]
Have another array with a set of
item_ids:
[2, 8, 10]
How do I use the $filter of angularjs to get array of objects from items array where item_id matches those in item_ids array.
You can use custom filter to do this kind of filtration. and you can use use $filter service if you want to do that in code instead of template.
See the below code.
var app = angular.module('app', []);
app.controller('ctrl', function($scope, $filter) {
$scope.items = [{
item_id: 1
}, {
item_id: 2
}, {
item_id: 3
}, {
item_id: 4
}];
$scope.findList = [2, 4];
$scope.findList2 = [3];
// Using $filter service.
$scope.usingservice = $filter('findobj')($scope.items, [1, 3])
});
app.filter('findobj', function() {
return function(list, obj) {
return list.filter(function(l) {
if (obj.indexOf(l.item_id) >= 0) {
return true;
}
});
};
})<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app">
<div ng-controller="ctrl">
<div ng-repeat="item in items | findobj: findList">
{{item}}
</div>
<hr/>
<div ng-repeat="item in items | findobj: findList2">
{{item}}
</div>
<hr/>{{usingservice}}
</div>
</div>
