Is the Angular filter functioning accurately in version 1.3, or has it been improved in version 1.5?

I've been utilizing the built-in angular filter "$filter" in my controller to filter a dropdown list of data, but I'm facing an issue where the filtered data doesn't match the text being typed. After some research, I discovered that there might be problems with filters not working correctly on objects and arrays in version 1.3. I'm now contemplating upgrading to version 1.5 to see if that resolves my problem or if it's due to syntax errors in my code. Here is a snippet of what I currently have:

DATA (initial data for ng-repeat and filtering):

this.items = [
            { name: 'Jim', city: 'Minneapolis', state: 'MN', zip: 44332 },
            { name: 'Boe', city: 'Scottsdale', state: 'AZ', zip: 44332 },
            { name: 'Tom', city: 'S.F.', state: 'CA', zip: 11223 },
            { name: 'Joe', city: 'Dallas', state: 'TX', zip: 34543 },
            { name: 'Jon', city: 'L.A.', state: 'CA', zip: 56433 },
        ];

TEMPLATE:

<input type="text" class="form-control" name="inputField" ng-change="ctrl.filterTextChangeLocal($event)" ng-model="ctrl.ngModelValue" ng-click="ctrl.openDropdown($event)" />

The input above is used to filter the following list:

<ul class="dropdown-menu list-group" ng-if="!ctrl.ngDisabled">
    <li class="list-group-item" ng-repeat="row in ctrl.filteredItems"
    ng-mousedown="ctrl.onSelectedLocal(row, $event)">
        {{row[ctrl.itemDisplayProperty]}}
    </li>
    <li class="list-group-item text-center" ng-show="ctrl.filteredItems.length <= 0">
        {{ctrl.noResultsMessage}}
    </li>
</ul>

CONTROLLER:

// filtering the dropdown data
//$event is used to check for specific keypresses, irrelevant here
//ngModelValue is bound to ng-model inside the input

public filterTextChangeLocal($event: ng.IAngularEvent) {
    this.filteredItems = this.$filter("filter")(this.items, this.ngModelValue);
}

The outcome is a basic bootstrap ul dropdown list displaying a specified property from the objects in the list (in this case, the name property), but the data isn't being properly filtered:

<li>Jim</li>
<li>Boe</li>
<li>Tom</li>
<li>Joe</li>
<li>Jon</li>

Thank you!

Answer №1

Angular filters are working flawlessly, but the issue might lie in your implementation... Here is a snippet showcasing your code:

EDIT: To filter an array based on a specific property, like 'name' in your case, you must guide the filter using

item in items | filter:{key:value}
. Check out this reference for more information: How to filter by object property in AngularJS

function TestCtrl($scope, data) {
  var vm = $scope;
  
  vm.items = data;
  vm.query = '';
}

angular
  .module('test', [])
  .value('data', [
    { name: 'Jim', city: 'Minneapolis', state: 'MN', zip: 44332 },
    { name: 'Boe', city: 'Scottsdale', state: 'AZ', zip: 44332 },
    { name: 'Tom', city: 'S.F.', state: 'CA', zip: 11223 },
    { name: 'Joe', city: 'Dallas', state: 'TX', zip: 34543 },
    { name: 'Jon', city: 'L.A.', state: 'CA', zip: 56433 },
  ])
  .controller('TestCtrl', ['$scope', 'data', TestCtrl])
;
@import "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css";

.form-group {
  padding-top: 1em;
  padding-bottom: 1.5em;
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<section ng-app="test">
  <article ng-controller="TestCtrl">
    <div class="row form-group">
      <div class="col-xs-10 col-xs-offset-1">
        <input type="text" ng-model="query" class="form-control"/>
      </div>
    </div>
    
    <div class="data" ng-repeat="item in items | filter:{name: query} track by $index">
      
      <div class="media">
          <div class="media-left">
            <a href="#">
              <img class="media-object" src="..." alt="...">
            </a>
          </div>
          <div class="media-body">
            <h4 class="media-heading" ng-bind="item.name"></h4>
            <p>
              <span ng-bind="item.city"></span> - 
              <span ng-bind="item.state"></span> - 
              <span ng-bind="item.zip"></span>
            </p>
          </div>
      </div>
        
    </div>
  </article>
</section>

Answer №2

It is recommended to update the filter as follows:

public modifyFilterText($event: ng.IAngularEvent) {
          this.filteredItems = this.$filter("filter")(this.items, {'name':this.ngModelValue});

    }

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