Store the filter value in a variable inside a directive

Can I use filters in directives as well as controllers?

Imagine injecting the filter into a directive like this...

app.directive('ngDirective', 
    ['$compile','$filter',
    function ($compile, $filter) {
        'use strict';

Then, within the link function, having the following code.

var filter = $filter('i18n');
var requiredMessage = filter('is_required');

I understand that when using directives, $scope can be lost which may cause issues.

EDIT: Check out the plunker to see the code preview http://plnkr.co/edit/u1L9SHdAvZnvEqwVBeJg

Any suggestions on resolving this problem?

javascriptangularjs

Answer №1

If you wish to apply a specific filter, it must be loaded first.

Below is an illustration of how to define a filter and load it into your directive module.

http://plnkr.co/edit/61X6i32By8PA6W7BLh52?p=preview

angular.module('myfilters', []).
filter('i18n', function() {
  return function() { return 'my message'; };
});

angular.module('myapp', ['myfilters']).
  directive('ngTest', function($compile, $filter) {
    'use strict';

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