Wednesday, 21 June 2017

how to create a custom filter in Angular

We use the custom gender filter like any other angular built-in filter with a pipe character:

In this custom filter that converts integer values 1, 2, 3 to Male, Female and Not disclosed respectively. gender is the name of the filter.

Controler:

var app = angular
        .module("myModule", [])
        .filter("gender", function () {
            return function (gender) {
                switch (gender) {
                    case 1:
                        return "Male";
                    case 2:
                        return "Female";
                    case 3:
                        return "Not disclosed";
                }
            }
        })
        .controller("myController", function ($scope) {

            var employees = [
                { name: "Ben", gender: 1, salary: 55000 },
                { name: "Sara", gender: 2, salary: 68000 },
                { name: "Mark", gender: 1, salary: 57000 },
                { name: "Pam", gender: 2, salary: 53000 },
                { name: "Todd", gender: 3, salary: 60000 }
            ];

            $scope.employees = employees;
        });

HtmlPage1.html : 

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script src="Scripts/angular.min.js"></script> 
</head>
<body ng-app="myModule">
    <div ng-controller="myController">
        <table>
            <thead>
                <tr>
                    <th>Name</th>
                    <th>Gender</th>
                    <th>Salary</th>
                </tr>
            </thead>
            <tbody>
                <tr ng-repeat="employee in employees">
                    <td> {{ employee.name }} </td>
                    <td> {{ employee.gender | gender}} </td>
                    <td> {{ employee.salary  }} </td>
                </tr>
            </tbody>
        </table>
    </div>
</body>

</html>

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