I know there is a $setPristine() function for the form element, is there an equivalent if I want single to set to ng-pristine single element tags like <input>?
The concept of pristine applies to a form as a whole and not to individual elements. A pristine form is one which has not yet been modified while a dirty form is one that has been changed. There are no semantics of flagging a input element unrelated to a form as pristine and for input elements in a form, the pristine flag applies solely to the form.
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I am using react final form and a react final form array in the form.
The Pristine part of the form is attached to the submit button. However if I open a pre filed in form, remove a value from the array and put the same value back in, the pristine of the form doesn't set back to true even though it is the same, Is there a workaround?
I am using $dirty to check the changes in a form ,but if i type something in the input box and remove it, the $dirty is still true.Is there any solution or it will work like this.
That is by design. Any form becomes $dirty whenever the user interacts with it, and you cannot undo the interaction event. Though you can restore defaults, that is clearly not the same.
Consider using $watch to check whether new value is different from the default one, and $setPristine() to clear user input.
$dirty means The field has been modified one more time. for compare your model by your previous model you can use $watch in controller.
if your field is empty you have a solution must set required attribute and in your input tag and use below code set ng-validate of your form to novalidate and then use below code for compare:
formName.inputName.$dirty && formName.inputName.$error.required
$Dirty refers to the form field is modified and you want to check using $pristine
I am Struggle With Dynamic Form Validation In My Current Project, in my Form Having Two Fields like User Name and Email, Both Are Mandatory.
If User Click Add-More(Up to 2 times only) Button Then Same above fields are came. those two fields are also Mandatory. if user removes those fields validation will not be work
I Already Wrote those 2 fields(3 times) just, I Kept ng-hide and ng-show,
And My Code is below,
enter code here
I have Added My Code To Plunker:
http://plnkr.co/edit/ErJl2Kg8maOn5GLaz9mb?p=preview
Avoid to use ng-hide or ng-show.
Prepare on model i.e. JSON Array and bind using ng-repeat and write associated code in JavaScript.
Example: Click here for Example
Use ng-required="showUser2" instead of just required.
In an AngularJS-form a field is still required even when its hidden.
That means when you hide your required form input field with ng-hide or ng-show then the AngularJS FormController completeProfile still treats the form as $invalid.
To get dynamic forms how you want them you can use ng-if to hide your unwanted input fields. Input fields inside of a ng-if are not considered by the form validation logic.
I updated your Plunker. The submit button is only shown when the form is valid.
I am currently learning angularJS and read about ng-pristine and ng-untouched directives for angular forms.
I am having trouble conceptually differentiating between these two directives, to me they seem to be one and the same by their definition.
For reference, here is how angular defines these directives:
ng-untouched: the control hasn't been blurred
ng-pristine: the control hasn't been interacted with yet
With my logic, I think that an element that is untouched implies that it is an element that is pristine and vice versa.
This is mostly because usually the only type of interaction I have programmed with form elements have been blurs.
What are some other types of "interactions" that one could imagine for a form control other than blurring it?
Suppose you have a text field in your form and you navigate through it using your tab key. As soon as you leave the field, it's not untouched anymore. But since you haven't entered or removed any character in the field, it's still pristine. The other types of interaction are the main ones: entering a value, select an option, etc.
AngularJS Developer Guide - Forms lists many styles and directives regarding forms and fields. For each one, a CSS class:
ng-valid
ng-invalid
ng-pristine
ng-dirty
ng-touched
ng-untouched
What's the difference between pristine/dirty, and touched/untouched?
AngularJS Developer Guide - CSS classes used by AngularJS
#property {boolean} $untouched True if control has not lost focus yet.
#property {boolean} $touched True if control has lost focus.
#property {boolean} $pristine True if user has not interacted with the control yet.
#property {boolean} $dirty True if user has already interacted with the control.
$pristine/$dirty tells you whether the user actually changed anything, while $touched/$untouched tells you whether the user has merely been there/visited.
This is really useful for validation. The reason for $dirty was always to avoid showing validation responses until the user has actually visited a certain control. But, by using only the $dirty property, the user wouldn't get validation feedback unless they actually altered the value. So, an $invalid field still wouldn't show the user a prompt if the user didn't change/interact with the value. If the user simply tabbed through a required field, ignoring it, everything looked OK until you submitted.
With Angular 1.3 and ng-touched, you can now set a particular style on a control as soon as the user has visited and then blurred, regardless of whether they actually edited the value or not.
Here's a CodePen that shows the difference in behavior.
In Pro Angular-6 book is detailed as below;
valid: This property returns true if the element’s contents are valid and false otherwise.
invalid: This property returns true if the element’s contents are invalid and false otherwise.
pristine: This property returns true if the element’s contents have not been changed.
dirty: This property returns true if the element’s contents have been changed.
untouched: This property returns true if the user has not visited the element.
touched: This property returns true if the user has visited the element.
This is a late answer but hope this might help.
Scenario 1:
You visited the site for first time and did not touch any field. The state of form is
ng-untouched and ng-pristine
Scenario 2:
You are currently entering the values in a particular field in the form. Then the state is
ng-untouched and ng-dirty
Scenario 3:
You are done with entering the values in the field and moved to next field
ng-touched and ng-dirty
Scenario 4:
Say a form has a phone number field . You have entered the number but you have actually entered 9 digits but there are 10 digits required for a phone number.Then the state is
ng-invalid
In short:
ng-untouched:When the form field has not been visited yet
ng-touched: When the form field is visited AND the field has lost focus
ng-pristine: The form field value is not changed
ng-dirty: The form field value is changed
ng-valid : When all validations of form fields are successful
ng-invalid: When any validation of form fields is not successful
It's worth mentioning that the validation properties are different for forms and form elements (note that touched and untouched are for fields only):
Input fields have the following states:
$untouched The field has not been touched yet
$touched The field has been touched
$pristine The field has not been modified yet
$dirty The field has been modified
$invalid The field content is not valid
$valid The field content is valid
They are all properties of the input field, and are either true or false.
Forms have the following states:
$pristine No fields have been modified yet
$dirty One or more have been modified
$invalid The form content is not valid
$valid The form content is valid
$submitted The form is submitted
They are all properties of the form, and are either true or false.