AngularJS ng-model not refreshing

Question

AngularJS ng-model not refreshing

One of the features in my application is a Font Awesome icon picker that allows employees to easily access different icons without having to search for their codes online.

However, I am facing an issue where clicking on an icon does not update the ng-model. To trigger the update, I have to enter another character or space for AngularJS to recognize the changes made in the input field.

You can see the problem in action in this gif: .

The code snippet I am using for the icon picker is:

editCellTemplate: function (container, options) {
    container.html('<input class="icon-picker-input edit icp icp-auto" type="text" ng-model="iconInput" /><script>$(".icp-auto").iconpicker();</script>');
    options.setValue($scope.iconInput);
    $compile(container)($scope);
}

I am utilizing a gridview from DevExtreme with a custom editCellTemplate.

If anyone has any insights on how to resolve this issue, your help would be greatly appreciated. Thank you in advance!

javascript angularjs typescript font-awesome devextreme

Answer 1

Answer №1

The primary issue causing your code to not function as expected is that Angular only monitors user interaction events to update the model. The icon picker you are using bypasses Angular by directly setting the input value.

To update the model, it's necessary to create a hook in the icon picker update process: when an icon is selected, either update the iconInput scope variable manually (enclosed within a $scope.$apply call) or simply trigger the 'input' event on the input element to allow Angular to capture the new value (refer to this reference).

You can try implementing something like this:

editCellTemplate: function (container, options) {
    container.html('<input class="icon-picker-input edit icp icp-auto" type="text" ng-model="iconInput" />');
    options.setValue($scope.iconInput);        
    $compile(container)($scope);

    // Avoid inline script tags, initialize the iconpicker here
    $(".icp-auto").iconpicker();

    // Listen for icon picker selections
    $(".icp-auto").on('iconpickerSelected', function(e) {
        // Trigger the "input changed" event
        $(e.currentTarget).trigger('input');
    });
}

Note that I removed the script tag from the compiled HTML as the icon picker initialization should be done in your main code. Script tags execute in the global context, which may not always be desirable.

Update : The error during compilation mentioned in your comment could be due to JQuery not recognizing the iconPicker() method, possibly because of a missing definition in your Typescript setup. At runtime, the contents of the <script> tag interpreted by Angular are treated as regular Javascript, bypassing Typescript type checking.

Refer to this solution for enabling additional methods on the JQuery interface. It is advisable to avoid placing logic inside compiled <script> elements to prevent potential issues down the line.

Answer 2

The primary issue causing your code to not function as expected is that Angular only monitors user interaction events to update the model. The icon picker you are using bypasses Angular by directly setting the input value.

To update the model, it's necessary to create a hook in the icon picker update process: when an icon is selected, either update the iconInput scope variable manually (enclosed within a $scope.$apply call) or simply trigger the 'input' event on the input element to allow Angular to capture the new value (refer to this reference).

You can try implementing something like this:

editCellTemplate: function (container, options) {
    container.html('<input class="icon-picker-input edit icp icp-auto" type="text" ng-model="iconInput" />');
    options.setValue($scope.iconInput);        
    $compile(container)($scope);

    // Avoid inline script tags, initialize the iconpicker here
    $(".icp-auto").iconpicker();

    // Listen for icon picker selections
    $(".icp-auto").on('iconpickerSelected', function(e) {
        // Trigger the "input changed" event
        $(e.currentTarget).trigger('input');
    });
}

Note that I removed the script tag from the compiled HTML as the icon picker initialization should be done in your main code. Script tags execute in the global context, which may not always be desirable.

Update : The error during compilation mentioned in your comment could be due to JQuery not recognizing the iconPicker() method, possibly because of a missing definition in your Typescript setup. At runtime, the contents of the <script> tag interpreted by Angular are treated as regular Javascript, bypassing Typescript type checking.

Refer to this solution for enabling additional methods on the JQuery interface. It is advisable to avoid placing logic inside compiled <script> elements to prevent potential issues down the line.

Answer 3

Answer №2

The issue you're facing is that iconpicker() updates the input without Angular recognizing the change. To resolve this, simply insert $scope.$apply() right after the function call. The problem lies in the unconventional method of including your script. The jQuery syntax you're using will only trigger the iconpicker() for the first matched element, so modifying the second row in your demo might not have the desired effect.

Instead, create a unique ID and implement the following approach:

editCellTemplate: function (container, options) {
    container.html('<input class="icon-picker-input edit icp icp-auto"' +
      ' type="text" ng-model="iconInput" id="uniqueID"/>' +
      '<script>$("#uniqueID").iconpicker();$scope.$apply();</script>');
    options.setValue($scope.iconInput);
    $compile(container)($scope);
}

...where uniqueID should be replaced with an actual unique identifier. That task is left for you to tackle.

Answer 4

The issue you're facing is that iconpicker() updates the input without Angular recognizing the change. To resolve this, simply insert $scope.$apply() right after the function call. The problem lies in the unconventional method of including your script. The jQuery syntax you're using will only trigger the iconpicker() for the first matched element, so modifying the second row in your demo might not have the desired effect.

Instead, create a unique ID and implement the following approach:

editCellTemplate: function (container, options) {
    container.html('<input class="icon-picker-input edit icp icp-auto"' +
      ' type="text" ng-model="iconInput" id="uniqueID"/>' +
      '<script>$("#uniqueID").iconpicker();$scope.$apply();</script>');
    options.setValue($scope.iconInput);
    $compile(container)($scope);
}

...where uniqueID should be replaced with an actual unique identifier. That task is left for you to tackle.

AngularJS ng-model not refreshing

Answer №1

Answer №2

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