How to create checkbox filter for ng-repeat list using angularjs?

Question

I'm trying to create checkbox for ng-repeat list. I'm facing some issues.

HTML

<input type="text" ng-model="findname" placeholder="Search Name"  />
<ul>
    <li class="no-decoration" ng-repeat="tech in technologyArray">
    <label>
        <input type="checkbox" ng-model="tech.on" />{{tech.u_proffession}}
    </label>
    {{tech.on}}
    </li>
</ul>
<ul>
    <li  ng-repeat="stu in students  | filter:findname | filter:myFunc ">                
        <strong>Name :{{stu.u_name}}</strong><br />
    </li>
</ul>

JS

var ngApp = angular.module('angapp',[]);
ngApp.controller('angCtrl',function($scope,$http){
    $scope.myFunc = function(a) {
    for(tech in $scope.technologyArray){
            var t = $scope.technologyArray[tech];
            if(t.on && a.technology.indexOf(t.u_proffession) > -1){
                return true;   
            }               
        }
    };
    $scope.technologyArray = [{ u_proffession: "developer", on: false}, {u_proffession:"driver", on:false}];
    $http.get("data.php").then(function(response) {
        $scope.students= response.data.records
    });
});

JSON ARRAY

{"records":[{"u_name":"adrian","u_mail":"abc@gmail.net","u_proffession":"developer"},{...}]}

1000 Rows

The simple search ng-model="findname" is working fine when i remove the checkbox filter inside the ng-list | filter:myFunc. But when i add both of them in ng-list then no data showing in student list and also text search does not working. I wanted to use both of them.

Can anyone guide me where i'm wrong that i can fix my issue. I would like to appreciate if someone guide me. Thank You.

Answer 1

I am definitely not a fan of putting filter functions in controllers. In that vein, I would recommend writing an actual filter.

angular.module('app', [])
  .controller('ctrl', function($scope) {
    $scope.technologyArray = [{
      u_proffession: "developer",
      on: false
    }, {
      u_proffession: "driver",
      on: false
    }];
    $scope.students = [{
      "u_name": "adrian",
      "u_mail": "abc@gmail.net",
      "u_proffession": "developer"
    }, {
      "u_name": "adam",
      "u_mail": "def@gmail.net",
      "u_proffession": "driver"
    }, {
      "u_name": "alex",
      "u_mail": "ghi@gmail.net",
      "u_proffession": "developer"
    }, {
      "u_name": "allen",
      "u_mail": "jkl@gmail.net",
      "u_proffession": "driver"
    }];
  })
  .filter('customFilter', function() {
    return function(input, techs) {
      if(!techs || techs.length === 0) return input;
      var out = [];
      angular.forEach(input, function(item) {
        angular.forEach(techs, function(tech) {
          if (item.u_proffession === tech.u_proffession) {
            out.push(item);
          }
        });
      });
      return out;
    }
  });

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.3/angular.min.js"></script>
<div ng-app="app" ng-controller="ctrl">
  <input type="text" ng-model="findname" placeholder="Search Name">
  <ul>
    <li ng-repeat="tech in technologyArray">
      <label>
        <input type="checkbox" ng-model="tech.on">{{tech.u_proffession}}
      </label>
    </li>
  </ul>
  <ul>
    <li ng-repeat="stu in students | filter:{u_name: findname} | customFilter:(technologyArray|filter:{on:true})">
      <strong>Name :{{stu.u_name}}</strong> ({{stu.u_proffession}})
    </li>
  </ul>
</div>