Add the Validator to MVVM
The following example demonstrates how to fully integrate the Validator in an MVVM scenario.
To achieve this behavior, use the change event of the Observable and the validate method of the Validator.
<div id="example">
<div class="demo-section k-content" data-bind="visible: confirmed">
Thank you for your registration, <span data-bind="text: firstName"></span> <span data-bind="text: lastName"></span>
<br /><br />
<button data-bind="click: startOver" class="k-button k-primary">Start Over</button>
</div>
<div class="demo-section k-content wide">
<div>
<form>
<ul id="fieldlist">
<li><label for="fname">First Name:</label> <input id="fname" name="fname" data-bind="value: firstName" class="k-textbox" required validationMessage="First name is required"/></li>
<li><label for="lname">Last Name:</label> <input id="lname" name="lname" data-bind="value: lastName" class="k-textbox" required validationMessage="Last name is required"/></li>
<li><label for="gender">Gender:</label> <select id="gender" data-bind="source: genders, value: gender"></select></li>
<li> <label for="agree">License Agreement</label> <input type="checkbox" id="agree" name="agree" data-bind="checked: agreed" required validationMessage="You should agree the licence agreement"/> I have read the licence agreement</li>
</ul>
<button data-bind="click: register" class="k-button k-primary">Register</button>
<button data-bind="click: startOver" class="k-button k-primary" type="button">Start Over</button>
</form>
</div>
</div>
<script>
var kendoValidator;
$(document).ready(function() {
var viewModel = kendo.observable({
firstName: "John",
lastName: "Doe",
genders: ["Male", "Female"],
gender: "Male",
agreed: false,
confirmed: false,
register: function(e) {
e.preventDefault();
if (kendoValidator.validate()) {
// If the form is valid, the Validator will return true
this.set("confirmed", true);
}
},
startOver: function() {
this.set("confirmed", false);
this.set("agreed", false);
this.set("gender", "Male");
this.set("firstName", "John");
this.set("lastName", "Doe");
}
});
kendo.bind($("#example"), viewModel);
$("form").kendoValidator({
validateOnBlur: false // Disable the default validation on blur
});
// Get the Validator instance.
kendoValidator = $("form").getKendoValidator();
viewModel.bind("change", function(e) {
// Validate on model change.
kendoValidator.validate();
});
});
</script>
<style>
.demo-section > div {
float: left;
margin-bottom: 2em;
}
#fieldlist {
margin: 0;
padding: 0;
}
#fieldlist li {
list-style: none;
padding-bottom: 1.5em;
text-align: left;
}
#fieldlist label {
display: block;
padding-bottom: .3em;
font-weight: bold;
text-transform: uppercase;
font-size: 12px;
}
.prettyprint {
background-color: #fff;
border: 1px solid #ccc;
overflow: auto;
padding: 5px;
}
</style>
</div>