Angular filter exactly on object key
I have a small angular app like so:
html
<body ng-app>
<div ng-controller="Ctrl">
<div ng-repeat="user in users | filter:1">
<span>{{ user.username }}, {{ user.id }}</span>
</div>
</div>
</body>
app.js
function Ctrl($scope) {
$scope.users = [
{"id":1,"username":"simon",},
{"id":8,"username":"betty",},
{"id":14,"username":"archie",},
{"id":3,"username":"jumbo1"},
]
}
output
simon, 1
archie, 14
jumbo1, 3
What I want to do is filter an exact match for filter argument AND filter on the id field ONLY.
Basically, I want the output to be:
output
simon, 1
I am using Angular 1.2.
Answer
In Angular 1.1.3 or newer you can use the following:
<div ng-repeat="user in users | filter:{'id': 1}:true">
{'id': 1} says to only compare with the field id. That gets you:
simon, 1
archie, 14
:true says "exact match" resulting in:
simon, 1
Here's that working: http://jsfiddle.net/AM95H/
To filter against a list of values, if you have the list in a scope variable, I'd add a custom filter to your JS file:
$scope.filterValues = [1,8];
$scope.myFilter = function(value) {
return ($scope.filterValues.indexOf(value.id) !== -1);
};
Used like this:
<div ng-repeat="user in users | filter: myFilter">
To filter against a parameter list we'll create our own filter. In this case we'll get called once with all the input values to test rather than once per value.
So the first parameter we'll receive is the array of input values (users in your case) and the second parameter will be the parameter we pass in ([1,8]). We'll then create an output array and add (push) any items in the input stream that match one of the filterValues. And return the output array.
myApp.filter('myFilter', function () {
return function(inputs,filterValues) {
var output = [];
angular.forEach(inputs, function (input) {
if (filterValues.indexOf(input.id) !== -1)
output.push(input);
});
return output;
};
});
And use it like this:
<div ng-repeat="user in users | myFilter:[1,8]">
Here's an example of this: http://jsfiddle.net/AM95H/2/