How to highlight a selected row in ngRepeat?

I couldn’t find something that will help me to solve this simple issue
in Angular. All the answers are relevant for navigation bars when a comparison
is being made against location path.

I’ve built a dynamic table using list and ngRepeat. When I click a row I’m trying to assign this row a css class, selected, to highlight the fact that this row has been selected by user, and remove the .selected from previously highlighted row.

I’m missing the method to bind between the row that been selected and the css class assignment.

I applied on each row (ul) ng-click="setSelected()"
But I’m missing the logic inside the function to apply the changes.

My Code – Plunk

My code:

var webApp = angular.module('webApp', []);

//controllers
webApp.controller ('VotesCtrl', function ($scope, Votes) {
    $scope.votes  = Votes;
    $scope.statuses = ["Approved","Pending","Trash","Spam"];

    $scope.setSelected = function() {
       console.log("show");

    }
});

//services
webApp.factory('Votes', [function() {

    //temporary repository till integration with DB this will be translated into restful get query
    var votes = [
        {
            id: '1',
            created: 1381583344653,
            updated: '222212',
            ratingID: '3',
            rate: 5,
            ip: '198.168.0.0',
            status: 'Pending',
        },
        {
            id: '111',
            created: 1381583344653,
            updated: '222212',
            ratingID: '4',
            rate: 5,
            ip: '198.168.0.1',
            status: 'Spam'    

        },
        {
            id: '2',
            created: 1382387322693,
            updated: '222212',
            ratingID: '3',
            rate: 1,
            ip: '198.168.0.2',
            status: 'Approved'

        },
        {

            id: '4',
            created: 1382387322693,
            updated: '222212',
            ratingID: '3',
            rate: 1,
            ip: '198.168.0.3',
            status: 'Spam'
        }
    ];

    return votes;
}]);

My HTML:

  <body ng-controller='VotesCtrl'>
    <div>
    <ul>
        <li class="created">
            <a>CREATED</a>
        </li>
        <li class="ip">
            <b>IP ADDRESS</b>
        </li>
        <li class="status">
            <b>STATUS</b>
        </li>
    </ul>
    <ul ng-repeat="vote in votes" ng-click="setSelected()">
        <li  class="created">
          {{vote.created|date}}
        </li>
        <li class="ip">
            {{vote.ip}}
        </li>
        <li class="status">
            {{vote.status}}
        </li>
    </ul>
   </div>
   </body>

My CSS (Only selected class):

.selected {
  background-color: red;
}

Here is Solutions:

We have many solutions to this problem, But we recommend you to use the first solution because it is tested & true solution that will 100% work for you.

Solution 1

Each row has an ID. All you have to do is to send this ID to the function setSelected(), store it (in $scope.idSelectedVote for instance), and then check for each row if the selected ID is the same as the current one. Here is a solution (see the documentation for ngClass, if needed):

$scope.idSelectedVote = null;
$scope.setSelected = function (idSelectedVote) {
   $scope.idSelectedVote = idSelectedVote;
};
<ul ng-repeat="vote in votes" ng-click="setSelected(vote.id)" ng-class="{selected: vote.id === idSelectedVote}">
    ...
</ul>

Plunker

Solution 2

You probably want to have LI rather than the UL have the background-color:

.selected li {
  background-color: red;
}

Then you want to have a dynamic class for the UL:

<ul ng-repeat="vote in votes" ng-click="setSelected()" class="{{selected}}">

Now you need to update the $scope.selected when clicking the row:

$scope.setSelected = function() {
   console.log("show", arguments, this);
   this.selected = 'selected';
}

and then un-select the previously highlighted row:

$scope.setSelected = function() {
   // console.log("show", arguments, this);
   if ($scope.lastSelected) {
     $scope.lastSelected.selected = '';
   }
   this.selected = 'selected';
   $scope.lastSelected = this;
}

Working solution:

http://plnkr.co/edit/wq6nxc?p=preview

Solution 3

I needed something similar, the ability to click on a set of icons to indicate a choice, or a text-based choice and have that update the model (2-way-binding) with the represented value and to also a way to indicate which was selected visually. I created an AngularJS directive for it, since it needed to be flexible enough to handle any HTML element being clicked on to indicate a choice.

<ul ng-repeat="vote in votes" ...>
    <li data-choice="selected" data-value="vote.id">...</li>
</ul>

Solution:
http://jsfiddle.net/brandonmilleraz/5fr9V/

Note: Use and implement solution 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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