utilizing angular directives on a group of elements

Question

utilizing angular directives on a group of elements

Is there a more efficient way to disable all form elements in a large form with multiple tabs when a specific condition is met? I could go with

<input ng-disabled="myCondition()">

, but it would require adding this code in many places, leading to potential code duplication. Instead, I opted for the following approach in my controller (using coffeescript).

$scope.$watch 'myCondition()', ->
  if $scope.myCondition()
    $('.my-form').find('input, select, textarea').attr('disabled', true)
  else
    $('.my-form').find('input, select, textarea').attr('disabled', false)

Although this method works, it may not be the most robust solution. If another scenario arises where a form element needs to be conditionally disabled, this implementation could cause unexpected behavior. What is the best practice for achieving this functionality? Could $compile play a role?

javascript angularjs

Answer 1

Answer №1

If you are looking to prevent interaction with a group of inputs (even though the title might lead you to believe otherwise), consider using the <fieldset> element:

<fieldset ng-disabled="common.condition">
    <input ng-model="input1" ... />
    <input ng-model="input2" ... />
    ...
</fieldset>

All inputs within the fieldset will be disabled.

Answer 2

If you are looking to prevent interaction with a group of inputs (even though the title might lead you to believe otherwise), consider using the <fieldset> element:

<fieldset ng-disabled="common.condition">
    <input ng-model="input1" ... />
    <input ng-model="input2" ... />
    ...
</fieldset>

All inputs within the fieldset will be disabled.

Answer 3

Answer №2

If you want to customize the behavior, consider creating a unique directive. Here is an example of how you can achieve this:

app.directive('customDisable', function() {
    return {
        link: function(scope, element, attrs) {

            var selectedElements = angular.element(element[0].querySelectorAll('input, textarea, select'));

            scope.$watch(attrs.customDisable, function(newVal) {
                selectedElements.prop('disabled', !!newVal);
            });
        }
    };
});

To use this directive, follow this syntax:

<form custom-disable="condition">
    ...
</form>

This approach allows you to target specific elements within a form for disabling based on different criteria. However, if your goal is to disable all elements within a form, you may want to consider using the fieldset method suggested by Nikos.

Check out the demo here: http://plnkr.co/edit/abcdefghijk12345?p=preview

Answer 4

If you want to customize the behavior, consider creating a unique directive. Here is an example of how you can achieve this:

app.directive('customDisable', function() {
    return {
        link: function(scope, element, attrs) {

            var selectedElements = angular.element(element[0].querySelectorAll('input, textarea, select'));

            scope.$watch(attrs.customDisable, function(newVal) {
                selectedElements.prop('disabled', !!newVal);
            });
        }
    };
});

To use this directive, follow this syntax:

<form custom-disable="condition">
    ...
</form>

This approach allows you to target specific elements within a form for disabling based on different criteria. However, if your goal is to disable all elements within a form, you may want to consider using the fieldset method suggested by Nikos.

utilizing angular directives on a group of elements

Answer №1

Answer №2

Check out the demo here: http://plnkr.co/edit/abcdefghijk12345?p=preview

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