My application uses MVC validation explained here:
http://blog.stevensanderson.com/2010/01/28/validating-a-variable-length-list-aspnet-mvc-2-style/
And it works fine with both server and client validation when the form is posted. However my problem is that I would like to have client validation on one of the fields before the form is posted. So when the TextBox loses focus it is validated directly.
I have solved it by using jQuery validation on the field that is validated before the form is posted.
You must use JQuery validations so that it will validate before posting. It also highlights those area where validation fails.
Related
I have a form where the user should be able to save even if there are validation errors.
These errors should be displayed once the user get into the form again.
So, i would like to invoke the validation of the entire form just after the form is displayed.
Currently, the validation is handled thru AJAX with several custom validators by using <f:validator/> and <p:ajax/> only when the user edits the field
Any suggestion is welcome!
Thanks!
An option would be to submit the form after it loads directly.
To achieve this you can use p:remoteCommand and something like jQuery('document').ready(function(){remoteCommandName()})
I always use ModelState.IsValid for check all of my model validation validated correctly in Server Side, but I think there is a limitation to use this. For example I define a Remote Validation attribute, but if I disable javascript then ModelState.IsValid don't check Remote Validation and always return true, Where is the problem? this is a limitation for ModelState.IsValid or is my fault? If necessary I can Add all my implementation.
This question has come around a few times. The answer is: it doesn't validate on the server-side, you have to perform the validation action yourself. See also following SO posts:
asp.net mvc 3 serverside remote validation not working on submit through fiddler
RemoteAttribute validator does not fire server-side
Of course, it would be nice to be able to validate it anyway on the server-side. Luckily some nice guy made an implementation for it. You can find his short blog post: http://www.tugberkugurlu.com/archive/asp-net-mvc-server-side-remote-validation .
I'm familiar with the method of submitting a form via a change event like or a checkbox's check event. Most articles explain how to find the first form using jQuery and invoke it's submit() method. However, I wish to submit the form but not cause validation so the back-end can perform other actions. In my case, I have a dropdown that a users changes. Depending on the value, the back-end adds/removes certain controls. The issue I'm runing into is that the validation prevents the form from submitting.
Q: How do I submit the form so it does not perform client-side validation?
Remove the validation just before the form is submitted - check out the answers here How do I remove jQuery validation from a form?
I think you can just turn the validation off by calling #Html.EnableClientValidation(false)
How can I disable validation for one button inside the Ajax begin form?
Using jQuery validation I tried many ways from Google, but none of them worked (class="cancel", disableValidation attribute, etc.).
There may be other ways, but one for sure way is to remove all the validation rules if using unobtrusive validation via:
http://docs.jquery.com/Plugins/Validation/rules#.22remove.22rules
$('#frmMyName').validate().cancelSubmit=true;
I have an MVC object (3.0) that uses the RemoteAttribute to verify whether a name already exists in a database. This works fine, however in testing we are having instances where people clicking submit rapidly enough can get a form submission through before the validation finishes.
My first thought to this is to make sure that validation occurs on the server side, as well. Is there any way to enforce this without writing another custom validator attribute?
It is a good practice to enforce validation on the server side because relying only on client side validation is not enough. So writing another custom validation attribute is necessary.
Did you forget if( ModelState.IsValid ) ... on the server side ?