How can I programmatically set an input to $valid within an AngularJS controller?

Question

How can I programmatically set an input to $valid within an AngularJS controller?

Implementing the TokenInput plugin alongside AngularJS formController validation.

Currently, I am working on verifying if a field contains text and then marking it as valid. However, the complication arises from the plugin creating its own input along with ul+li for styling.

With access to addItem (formname) and controller capabilities, the goal is to set it to $valid.

Markup.

<form class="form-horizontal add-inventory-item" name="addItem">
     <input id="capabilities" name="capabilities" token-input data-ng-model="inventoryCapabilitiesAutoComplete" data-on-add="addCapability()" data-on-delete="removeCapability()" required>
     <div class="required" data-ng-show="addItem.capabilities.$error.required" title="Please enter capability."></div>
</form>

JavaScript.

$scope.capabilityValidation = function (capability) {
  if (capability.name !== "") {
    addItem.capabilities.$valid = true;
    addItem.capabilities.$error.required = false;
  } else {
    addItem.capabilities.$valid = false;
    addItem.capabilities.$error.required = true;
  }
};

The capabilityValidation function is triggered when the TokenInput has an entry and the object is passed in.

UPDATE:

Realized that ng-model on my input performs actions and retrieves autocomplete results, making it challenging to achieve ng-valid functionality since it depends on the model.

$scope.inventoryCapabilitiesAutoComplete = {
  options: {
    tokenLimit: null
  },
  source: urlHelper.getAutoComplete('capability')
};

This autocomplete implementation was not authored by me. Is there an alternative approach where I can manipulate the ng-model attribute and relocate the model function elsewhere?

javascript validation angularjs

Answer 1

Answer №1

Modifying a form's validity directly is not possible. The form's validity depends on the validity of all descendant inputs - if they are valid, the form is valid; if not, it is not.

To alter the validity of an input element, you should do as follows:

updateItem.availability.$setValidity("outOfStock", false);

By setting the validity to false for this input, you make both the input and the form invalid. You can also identify which specific error is causing the validation failure.

updateItem.availability.errors.outOfStock == true;

Answer 2

Modifying a form's validity directly is not possible. The form's validity depends on the validity of all descendant inputs - if they are valid, the form is valid; if not, it is not.

To alter the validity of an input element, you should do as follows:

updateItem.availability.$setValidity("outOfStock", false);

By setting the validity to false for this input, you make both the input and the form invalid. You can also identify which specific error is causing the validation failure.

updateItem.availability.errors.outOfStock == true;

Answer 3

Answer №2

Despite the lack of helpful answers above, I eventually stumbled upon a useful solution after an extensive search.

My problem was resolved by utilizing the following code to manually set the input field to ng-invalid (to set it as ng-valid, change it to 'true'):

$scope.myForm.inputName.$setValidity('required', false);

Answer 4

Despite the lack of helpful answers above, I eventually stumbled upon a useful solution after an extensive search.

My problem was resolved by utilizing the following code to manually set the input field to ng-invalid (to set it as ng-valid, change it to 'true'):

$scope.myForm.inputName.$setValidity('required', false);

Answer 5

Answer №3

After encountering a similar issue, I found a solution by including a hidden field to store the invalid state.

<input type="hidden" ng-model="vm.application.isComplete" required="" />

In my scenario, I had a boolean value that needed to be selected using buttons. If 'yes' was chosen, an entity would be added and the button state changed. The form remained invalid until all questions were answered with one button in each pair clicked.

vm.selectSchool = function (attended) { 
  vm.application.hasGraduatedHighSchool = attended;
  applicationService.addSchool(attended, 1, vm.application);
}

<input type="hidden" ng-model="vm.application.hasGraduatedHighSchool" required="" />
<div class="row">
  <div class="col-lg-3"><label>Did You Graduate High School?</label><label class="required" ng-hide="vm.application.hasGraduatedHighSchool != undefined">*</label></div>
  <div class="col-lg-2">
    <button value="Yes" title="Yes" ng-click="vm.selectSchool(true)" class="btn btn-default" ng-class="{'btn-success': vm.application.hasGraduatedHighSchool == true}">Yes</button>
    <button value="No" title="No" ng-click="vm.selectSchool(false)" class="btn btn-default" ng-class="{'btn-success':  vm.application.hasGraduatedHighSchool == false}">No</button>
  </div>
</div>

Answer 6

After encountering a similar issue, I found a solution by including a hidden field to store the invalid state.

<input type="hidden" ng-model="vm.application.isComplete" required="" />

In my scenario, I had a boolean value that needed to be selected using buttons. If 'yes' was chosen, an entity would be added and the button state changed. The form remained invalid until all questions were answered with one button in each pair clicked.

vm.selectSchool = function (attended) { 
  vm.application.hasGraduatedHighSchool = attended;
  applicationService.addSchool(attended, 1, vm.application);
}

<input type="hidden" ng-model="vm.application.hasGraduatedHighSchool" required="" />
<div class="row">
  <div class="col-lg-3"><label>Did You Graduate High School?</label><label class="required" ng-hide="vm.application.hasGraduatedHighSchool != undefined">*</label></div>
  <div class="col-lg-2">
    <button value="Yes" title="Yes" ng-click="vm.selectSchool(true)" class="btn btn-default" ng-class="{'btn-success': vm.application.hasGraduatedHighSchool == true}">Yes</button>
    <button value="No" title="No" ng-click="vm.selectSchool(false)" class="btn btn-default" ng-class="{'btn-success':  vm.application.hasGraduatedHighSchool == false}">No</button>
  </div>
</div>

Answer 7

Answer №4

It's quite straightforward. For instance: in your JS controller, you can do the following:

$scope.inputngmodel.$valid = false;

or

$scope.inputngmodel.$invalid = true;

or

$scope.formname.inputngmodel.$valid = false;

or

$scope.formname.inputngmodel.$invalid = true;

All of these methods have worked for me in various scenarios. Let me know if this helps solve your issue.

Answer 8

It's quite straightforward. For instance: in your JS controller, you can do the following:

$scope.inputngmodel.$valid = false;

or

$scope.inputngmodel.$invalid = true;

or

$scope.formname.inputngmodel.$valid = false;

or

$scope.formname.inputngmodel.$invalid = true;

All of these methods have worked for me in various scenarios. Let me know if this helps solve your issue.

Answer 9

Answer №5

In order to resolve the date error, I found that deleting the error before using $setValidity was necessary to properly mark the form as valid.

delete currentmodal.form.$error.date;
currentmodal.form.$setValidity('myDate', true);

Answer 10

In order to resolve the date error, I found that deleting the error before using $setValidity was necessary to properly mark the form as valid.

delete currentmodal.form.$error.date;
currentmodal.form.$setValidity('myDate', true);

How can I programmatically set an input to $valid within an AngularJS controller?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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