ValidationMessage for dropdownlist

[Federico]

I would like to create a validation message only for dropdownlist.

I'd like to get the text value of label.

label is parent of kendo dropdownlist

var custom = function(input){
    if(input.is("[data-role=dropdownlist]")){
        if(Utils.isNullOrUndefined(input[0].value) || input[0].value.length === 0){
            return true;
        }
        return input.data("kendoDropDownList").value();
    }
    return true;
    }

    rules.custom = custom;
    messages.custom = function(input){
        "Insert" + input.closest("label").text()
    }

    var validator = {
        validate: function(){
            $(".k-invalid:first").focus();
        },
        rules: rules,
        messages: messages
    };

    return $("#form1").kendoValidator(validator).data("kendoValidator");

 

This solution doesn't work

 

 

 

[Neli]

Hello Federico,

In order to set the text from the label as message of the custom rule, you can use the following

messages: {
          custom: function(input){
                return $(input).parents().find('label').text();
          }
 },

I would suggest you to change the structure of the input element and its label, and set them to be siblings

<label for="time">Start time  </label>
<input id="time" name="time">

In case the label is parent of the input, by calling the text() method on the label, the text from the input field (text in the DropDownList) will be also retrieved.

I hope you will find the linked Dojo example helpful.


Regards,
Neli
Progress Telerik

[Federico]

if I wanted to do it to only those that have the parameter 'required', how should I do?

[Ivan Danchev]

Hello Federico,

You can validate only those with required attribute by checking whether this attribute is present:

if (input.is("[required][data-role=dropdownlist]")) {

The dojo example with this modification added.

Regards,
Ivan Danchev
Progress Telerik

[Federico]

This solution doesn't work.

It show:" time is required"

I'd like to show the custom message ("home" for example) for the required dropdownlist.

 

[Ivan Danchev]

Hi Federico,

Here's the example modified to show custom message and validate only the required DropDownList.

Regards,
Ivan Danchev
Progress Telerik