Make a reference to a specific element within an Angular component and access

There are two images to choose from, and based on your selection using ng-click, the class changes. When moving on to the next step, a new object is created to store references to the selected image:

$scope.cabinetDetails.cabinetType = {
    name: $scope.currentElement.obj.name,
    image: $scope.currentElement.obj.image,
    ref: $scope.currentElement
};

The selected image can be accessed later through

$scope.cabinetDetails.cabinetType.ref
.

If you need to go back to a previous step and want the previously selected image to appear as selected, you can do so by executing this code when loading the previous step:

if ($scope.cabinetDetails.cabinetType != null)
{
    $scope.currentElement = $scope.cabinetDetails.cabinetType.ref;
}

To indicate which image is currently selected, the ng-repeat function checks for an active class defined in the ng-class attribute:

<div ng-repeat="obj in currentObject">
    <div class="img-select" ng-click="setActive(this)" ng-class="{itemSelected : isActive(this)}">
      <div align="center">
        <img ng-src="resources/images/aventos/{{obj.image}}" />
      </div>
      <div class="img-title">{{obj.name}}</div>
    </div>
</div>

The isActive() function simply compares elements to determine if they are selected:

$scope.isActive = function(element)
{
    return $scope.currentElement === element;
}

If you experience issues with referencing, double-check your implementation for any errors.

Answer №1

One issue I noticed in your HTML template is the use of this in multiple methods. In this context, this references the current scope object of the ng-repeat.

If you are iterating over an array, consider changing this line

<div class="img-select" ng-click="setActive(this)" ng-class="{itemSelected : isActive(this)}">

to

<div class="img-select" ng-click="setActive(obj)" ng-class="{itemSelected : isActive(obj)}">

Also, make sure to check that the methods setActive and isActive are operating on your object instead of the scope instance by debugging the method.

Answer №2

The issue lies with the utilization of the this keyword. It seems that this cannot be effectively transmitted from the template.

Instead of directly targeting elements, it is recommended to take a different approach by focusing on the fundamental item in the repeater. Consider substituting this with obj (representing the object in your ng-repeat="obj in currentObject")

ng-click="setActive(obj)" ng-class="{itemSelected : isActive(obj)}

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