I have a form. This form contains array of products i.e
[{"productId":"12121212","count":5},{"productId":"22222222","count":6}]
What i need is to :
Validate the form on client and disable submit when any of product array fields are invalid.
Can i use validators like i work plain form fields and check like:
myForm.product[i].productId.$invalid,
myForm.product[i].productId.$error.required
?
Validate the form on server when submit and pass back errors to client. Now i attach service prop 'error', but it seems not common way to angularjs validation.
Plunker link:https://plnkr.co/edit/kbLs3SJE5ybNxIvo3ynq
Any suggestions. Thanks!
It is best to validate the input fields on client side first. To disable the submit button based on validation you can use ng-disabled="myForm.$invalid" on submit button. This will work for HTML validations on input fields like required, ng-minlength, ng-maxlength, etc.
However for complex validations on field, you can write a function and call it: ng-disabled="isFormValid()". This function will iterate through all values and check if they are valid.
Related
I have custom validation in email input field, which is being triggered by form.reset(), which reset the form (After user successfully submit form).
I was wondering how to not trigger validation after user submit and reset the form?
For anyone running into this issue in future - you could also use form.restart() which will both reset the form and field state for all fields. This is perfect for when your initial form values trigger validations.
See FormAPI docs here
I used following method to get rid of validation after successfully submission and resetting of the form.
form.reset();
form.resetFieldState('email');
It's available under
FormRenderProps > FormApi
I need to validate a single selection row on a datatables. I don't know which is the best way it can be done. Right now I've put a hidden type input that is filled by javascript when the users clicks a row on datatables. When I validate form, parsley doesn't submit it if required hidden input is blank, but no error message is shown.
I've also tried to get field:error event, but it is not fired on hidden field.
window.Parsley.on('field:error', function() {
// This global callback will be called for any field that fails validation.
console.log('Validation failed for: ', this.$element);
});
Is there any way I can show with parsley a validation error message if hidden field is blank on form submit? I know I can do it without parsley, just checking if field is blank on submit, but as the other form fields are being validated through parsley I would like to know a way to show parsley error message somewhere in the form by parsley.
Assuming you have removed the "type=hidden" part of the excluded option, it should work fine.
Tip: You should trigger an 'input' event on your hidden field whenever you modify it.
Post a working example if it still doesn't work.
I added field validation attributes like "required" and "pattern" in my form, and the form is inside a ng-controller. The validation works. But it seems the validations are triggered on page load, and I see all the fields are marked as invalid with error message when the page load.
I tried to add "novalidation" attribute to the form as indicated in the examples on AngularJS website, but no luck.
I would like to have the validation triggered the first time the user tries to interact with it. How can I do that?
Update
Here's an example https://jsfiddle.net/davidshen84/00t197gx/
<div class="mdl-cell mdl-cell-6-col mdl-textfield mdl-js-textfield">
<input class="mdl-textfield__input" type="text" id="screenname" pattern="[a-zA-Z0-9]{3,}" ng-model="comment.screenname" required/>
<label class="mdl-textfield__label" for="screenname">Screen Name</label>
</div>
On load, you should see all the input fields had a red line under them which indicate they are in the invalid state. And the line turns to blue once validated.
Note: The style on the check button does not work...should not be a concern in the problem.
Angular is going to check the form the same way at any point (load or later) and render the result. If you don't want to display the results on load, add logic to check whether the form has been interacted with. You can hide your error messages using ng-if="yourFormName.$dirty", or display according to the status of an individual field with yourFormName.yourFieldName.$dirty.
Click here for live demo.
What is currently implemented (wrong IMHO) is that MDL automatically validates input and doesn't mind "novalidate" form attribute. I had to implement check for empty input value (skip validation and remove is-invalid class) and, since angular form validation requires "novalidate" attribute, check:
if (input.form.novalidate = true) // skip validation
that way you can actually turn off mdl validation and leave everything to angular.
One more thing is actually required. You can create angular directive which validates expression and add is-invalid class if necessary:
div class="mdl-textfield" mdl-validator="form.email.$error"
in the usual javascript form submit , what happens is that when i do the post the element names and values automatically are sent in the HTTP request to the server without me having to collect each one of them .
what I have noticed in angular form submits is that is not the case . based on ng-submit example I have to collect each ng-model i have in the view into my controller and I have to do that in the submit function I write .
My question
isnt there a way where I can collect everything from the view without having to refer to all of the ng-models in my controller ?
Why ?
there is this case where the form elements are dynamically drawn from a directive and its not very practical to refer to each when they are so many .
Any advice ?
It depends on app to app. If yours is a SPA then you have to make sure you use ng-submit and submit the form.
When you add dynamic elements to a form if you make sure you also add the ng-model accordingly then you dont have to worry about them. It will be part of the form submission.
I think what you can do is, all the form fields(even dynamic elements) can be maintained in an object e.g. formData and then add all the models into this object. Now in the submit method you can read all the form elements values (event the dynamic elements value) using formData object.
Whenever you add a dynamic element make sure it is added to formData object
E.g.
<input ng-model="formData.field1" type="text">
<input ng-model="formData.field" type="text">
Inside submit method you can get the form field vlaues using $.param($scope.formData)
My UI has a batch editable grid with column called Rank and fixed number of records ( say 5 records and no paging ). The field Rank has to be validated and should always input in the ascending order ( say 1,4,6 7, 9). These inputs has to be validated before submitting and would like to show in-line validation message against the edited cell.
I tried following
Using [Remote] validation attribute, but no way to pass the entire grid data.
Using OnSave client event, not sure how to add the in-line validation messages
Any suggestion on this would be greatly appreciated,
-George
Try adding this jquery.validate.unobtrusive.min.js Javascript reference in your view page. And the remote validation will exactly post all the input parameters to the action method. There you can return either true or false.
In order to pass the entire grid data using [Remote] validation attribute, you have to make the grid data in this format for each data:
<input name="col1" value="col1_Value">
The name "col1" must be match as a parameter in your controller, so that the value can be passed.
You can achieve this by doing a little trick using jquery.