Using KnockoutJS + JQuery Validation, all the control validation is working fine. While Radio btn validation is not working.
Issue 1: * is displayed near to radio btn
Male
Female
output: * Male Expected output : Male *
output: * Female Expected output : Female *
Issue 2: While applying Class=Required both radio buttons are mandatory, how we will resolve the issue
Issue 3: Same thing happend for dynamic radio buttons as well. All are available in the same page.
Guide me......
Try the knockout validation, it works so much nicer together with knockout
https://github.com/ericmbarnard/Knockout-Validation
Make sure your radio buttons have the same "name" attribute (this is the case with jquery validation regardless of using knockout)
You only need to add required class to one of them if you do my first point above
Dynamic radio buttons need to have specific names (and names need to be same for all buttons you want to validate in a group)
For instance, I have this foreach loop that validates the radiobuttons correctly because they have unique names
<input type="radio" data-bind="attr: { name: 'options-' + $index() }" class="required" value="Yes" checked />
<input type="radio" data-bind="attr: { name: 'options-' + $index() }" value="No" checked />
Related
I have a View that contains the following Line of code:
//(DaysOfWeek is a bool[])
#Html.CheckBoxFor(m => m.Data.DaysOfWeek[0])
It starts off as false. When the user "checks" the box and returns, it returns a value for both true and false;
Here is what is being passed back as part of the form data
Data.DaysOfWeek[0]:true
Data.DaysOfWeek[0]:false
Why is it doing that?
This is because standard HTML checkboxes return no value if unchecked. To make this annoying behaviour more intuitive, the CheckBoxFor method creates a checkbox and a hidden control with the same name, with a value of false, something like this:
<input type="checkbox" name="myControl" value="True" /> My control
<input type="hidden" name="myControl" value="False" />
What you will see when the form is posted is either:
False // checkbox unchecked
True,False // checkbox was checked
Therefore, to test if the box was checked you should use Contains('True'):
bool checkboxChecked = formCollection["myControl"].Contains("True");
I'm using MVC3 with unobtrusive validation. I have a field that the user is expected to fill with some data and then press a "search" button. If search has never been pressed or the user has changed the input field after pressing search, the form should not be possible to submit.
I've added a hidden field that is set to true by the click() event of the button and emptied by the keyup() event of the input box. Now I would like to add a validation rule that requires the hidden field to be true to allow submit.
Preferably I would like to use unobtrusive validation, but if that doesn't work it is ok with something that requires some javascript, as long as it doesn't spoil the unobtrusive validation for the rest of the form.
The following code snippet does exactly what I want, until I add type="hidden".
<input class="required" id="client-searched" data-val="true"
name="ClientSearched" data-val-required="Press search!"/>
<span class="field-validation-valid" data-valmsg-replace="true"
data-valmsg-for="ClientSearched"/>
try
var validator = $("#myFormId").data('validator');
validator.settings.ignore = "";
Here is an informative blog post
EDIT
#RAM suggested a better solution please FOLLOW
I had a similar problem, and I used this code to change defaults, in MVC 4:
#Scripts.Render("~/bundles/jqueryval")
<script type="text/javascript">
$.validator.setDefaults({
ignore: ""
})
</script>
Source:
JQuery validate
In some cases you want just ignore validation on one or several
hidden fields (not all hidden field) in client side and also you want validate them and other hidden fields in server side.
In these cases you have validation attributes for all hidden fields in your ViewModel and they will be used to validate the form when you post it (server side).
Now you need a trick to just validate some of the hidden fields in client side (not all of them). In these cases i recommend you to use my mechanism!
Set data-force-val as true in the target hidden input tags. It's our custom attribute that we use to detect target hidden inputs witch we want validate them in client side.
// This hidden input will validate both server side & client side
<input type="hidden" value="" name="Id" id="Id"
data-val-required="The Id field is required."
data-val="true"
data-force-val="true">
// This hidden input will validate both server side & client side
<input type="hidden" value="" name="Email" id="Email"
data-val-required="The Email field is required."
data-val="true"
data-force-val="true">
// This hidden input just will validate server side
<input type="hidden" value="" name="Name" id="Name"
data-val-required="The Neme field is required."
data-val="true">
Also you can set data_force-val for your hidden inputs by jQuery:
$("#Id").attr("data-force-val", true); // We want validate Id in client side
$("#Email").attr("data-force-val", true); // We want validate Email in client side
$("#Name").attr("data-force-val", false); // We wont validate Name in client side (This line is not necessary, event we can remove it)
Now, active data-force-val="true" functionality by some simple codes like these:
var validator = $("#TheFormId").data('validator');
validator.settings.ignore = ":hidden:not([data-force-val='true'])";
Note: validator.settings.ignore default value is :hidden
I have a form with validators and 2 buttons inside form:
<input type="submit" class="LFL_btn" value="" />
<input type="image" src="/Content/images/btn_register.jpg" class="LFR_btn" id="btnRegister" />
but validator works and for second button too. Why and how to fix it?
Why?
Because jquery.validate kicks in when you submit a form by hijacking the submit event of this form. And since both are submit buttons, validation is run for both of them.
how to fix it?
Add class="cancel" to the button you want to exclude from validation which will instruct the jQuery.validate plugin not to run validation:
<input type="image" src="/Content/images/btn_register.jpg" class="LFR_btn cancel" id="btnRegister" />
<input type="image" src="/Content/images/btn_register.jpg" class="LFR_btn cancel" id="btnRegister" />
This has been covered in the documentation.
Obviously all this refers only to client side validation. On the server it's a whole different story. If you wanted to disable validation when some button is clicked you will first need to know which button was clicked. This could happen by giving the first button a name attribute and then inspecting on the server the value of this parameter from the request:
<button type="submit" class="LFL_btn" name="validate" value="validate">Validate</button>
and then inside your controller action check if this button was used to submit the form and apply validation only in this case:
[HttpPost]
public ActionResult Foo(string validate)
{
if (!string.IsNullOrEmpty(validate))
{
// the Validate button was clicked:
var model = new MyViewModel();
if (!TryUpdateModel(model))
{
// there were validation errors => redisplay the view
return View(model);
}
// validation went fine => do some processing...
}
else
{
// the image button was clicked
// do some other processing ...
}
}
I have got a hidden field with a validation for it as below
#Html.HiddenFor(m => m.Rating)
#Html.ValidationMessageFor(m => m.Rating)
The Rating property has Range validator attribute applied with range being 1-5. This is put inside a form with a submit button.
I have then got following jquery that sets the value in hidden field on some user event (Basically user clicks on some stars to rate)
$(".star").click(function(){
$("#Rating").val(2);
});
Now if I submit the form without the user event that sets the hidden field, the validation works. The error messages is displayed properly and it works all client side.
Now, in this situation, if I click on stars, that invokes the above javascript a sets the hidden field, the validation error message would not go away. I can submit the form after the hidden variable has some valid value. But I'm expecting that the client side validation should work. (When the hidden variable has been set with some valid value, the validation error should go away)
Initially I thought, the jquery validation would be invoked on some special events so I tried raising click, change, keyup, blur and focusout events myself as below
$(".star").click(function(){
$("#Rating").val(2);
$("#Rating").change();
});
But this is still not working. The error messages once appeared, does not go away at all.
You can wrap your hidden field with a div put somewhere but still inside the <form>. Add css to kick it to outer space.
<div style="position:absolute; top:-9999px; left:-9999px">
<input id="Rating" type="hidden" name="rating" >
</div>
Then add the following label to where you want to show the error:
<label for="rating" class="error" style="display:none">I am an an error message, please modify me.</label>
Client-side validation ignores hidden fields. You can set the "ignore" option dynamically but just to get it to work I did the following directlyl in the .js file.
For now this should do the trick.
In my aspx...
<%: Html.HiddenFor(model => model.age, new { #class="formValidator" }) %>
In jquery.validate.js
ignore: ":hidden:not('.formValidator')",
This turned out to be a very interesting issue. the default "ignore" setting is ignores hidden fields. The field was hidden in a jQuery ui plug-in. I simply added a class called "includeCheckBox" to the rendered input I wanted to validate and put the following line of code in...
var validator = $('#formMyPita').validate();
validator.settings.ignore = ':hidden:not(".includeCheckBox")';
if ($('#formMyPita').valid()) {....
In the code which sets the hidden field's value, manually invoke validation for the form, like so:
$("form").validate().form();
I think it is because hidden inputs don't fire any of these events.
What you could do instead would be to use a <input type="text" style="display:none" /> instead of the hidden field;
#html.TextBoxFor(m => m.Rating, new {display = "display:none"})
I'm using MVC 3 with razor as the view engine and the unobtrusive client validation enabled.
I'm trying to create a form where the user has a radio button group to select their preferred contact method - either phone or email. Depending on the option selected, I want to show the appropriate textbox, but then also enable/disable the required validator for the appropriate textbox.
My markup looks something like this at the moment (Just starting out with MVC so please point out any obvious mistakes):
<div id="prefferedContact">
<p>Preferred Contact Method *</p>
<input type="radio" id="contactMethodEmail" name="PreferredContactMethod" value="email" #if (Model.PreferredContactMethod != "phone"){<text>checked="checked"</text>} /> <label for="contactMethodEmail">by email</label>
<input type="radio" id="contactMethodPhone" name="PreferredContactMethod" value="phone" #if (Model.PreferredContactMethod == "phone"){<text>checked="checked"</text>} /> <label for="contactMethodPhone">by phone</label>
</div>
<div id="contactMethodDetails" class="formItem">
<div id="emailAddressBox">
#Html.LabelFor(x => x.Email, "Email address")
#Html.TextBoxFor(x => x.Email, new { #class = "textbox" })
</div>
<div id="phoneNumberBox">
#Html.LabelFor(x => x.PhoneNumber, "Phone number")
#Html.TextBoxFor(x => x.PhoneNumber, new { #class = "textbox" })
</div>
</div>
</div>
</div>
There's some jquery function that adds an onclick event to the radio buttons to toggle between the two boxes depending on the selected value.
The Model - for these specific fields - doesn't have any required validation on it at the moment but is binding fine. Also, validation is working on other fields as expected
I really just need to get an idea of:
(a) is it possible to toggle validation on and off
(b) does this impact the ModelState validation in anyway (or do I need to customise it)
I had also thought of having the one textbox for the contact data, but I wanted to have regular expression validation for the email and for the phone number separately. If I was to have a single textbox, could I switch the validation rules on the textbox depending on the selected option???
Hope that's clear enough with enough information.
Thanks
Joel
You can perform class-level validation if you need to enforce rules based on multiple properties:
http://weblogs.asp.net/scottgu/archive/2010/12/10/class-level-model-validation-with-ef-code-first-and-asp-net-mvc-3.aspx
Unfortunately, this seems to only work server-side, so you'd have to implement custom client-side validation.
Another option would be to have two different models, one for each scenario (with common properties in a base class), but this might be a little more complicated.