Angular Custom Chain Filtering: A Unique Approach

Hey everyone!

I've encountered an issue: I am struggling to write a filter in Angular that is used in a filter chain. My knowledge of Angular is limited, so I'm hoping that the problem lies in a small mistake in my code.

Here is a snippet from my JavaScript file with filters (I acknowledge that there may be something glaringly obvious that I have overlooked):

(function () {
    angular.module('myModule')
        .filter('firstFilter', function () {
            return function (input) {
                    return input;
                }
        });

    angular.module('myModule')
        .filter('secondFilter', function () {
            return function (input, firstParam, secondParam) {
                return input;
            }
        });
})();

Next, here is part of my HTML where I attempted to use the secondFilter:

<tr ng-repeat="someObject in (someObjects | secondFilter : firstParam : secondParam)"></tr>

However, upon loading the page, I receive the following error message:

Unknown provider: secondFilterFilterProvider

If necessary, I can provide the full error message. Any assistance would be greatly appreciated. Thank you!

Answer №1

One reason for this behavior is that the function returned by a filter only takes the input as a parameter. To pass other parameters, you can use the following syntax:

 angular.module('myModule')
        .filter('secondFilter', function (firstParam, secondParam) {
            return function (input) {
                return input;
            }
        });

You can then call this filter in your code like so:

<tr ng-repeat="someObject in someObjects | filter:secondFilter(firstParam, secondParam)"></tr>

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