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POMVC3 Custom String Client Validation not working
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  1. POMVC3 Custom String Client Validation not working
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    copied!<p>Newbie to MVC3 and jquery unobtrusive validation. I am trying to achieve a very simple custom string validation for my mvc view model property. I know there is an existing "Required" attribute but wanted to play with my custom for testing purpose.</p> <p>Here is my custom validator class:</p> <pre><code>public class StringRequiredAttribute : ValidationAttribute, IClientValidatable { public override bool IsValid(object value) { string valueToValidate = value.ToString(); if ((value == null ) || (valueToValidate.IsEmpty())) { return false; } return true; } public override string FormatErrorMessage(string name) { return "formatting my custom message here..."; } public IEnumerable&lt;ModelClientValidationRule&gt; GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { var rule = new ModelClientValidationRule { ErrorMessage = FormatErrorMessage(metadata.GetDisplayName()), ValidationType = "stringrequired" }; yield return rule; } } </code></pre> <p>Here is the view model class property declaration:</p> <pre><code>[Display(Name = "Custom Property")] [StringRequired(ErrorMessage="My custom error message goes here")] public string MyProperty { get; set; } </code></pre> <p>Here is my script:</p> <pre><code>jQuery.validator.unobtrusive.adapters.add('stringrequired', [], function (options) { options.rules['stringrequired'] = true; options.messages['stringrequired'] = options.message; } ); jQuery.validator.addMethod('stringrequired', function (value, element, params) { //problem is this method is never fired if (value == undefined || value == null) return false; if (value.toString().length == 0) return false; return true; },''); </code></pre> <p>This is my html markup:</p> <pre><code>&lt;textarea cols="20" data-val="true" data-val-stringrequired="My custom message is displayed here" id="MyProperty" name="MyProperty" rows="2"&gt; &lt;/textarea&gt; </code></pre> <p>I have ClientValidationEnabled &amp; UnobtrusiveJavaScriptEnabled set to "true" in web.config</p> <p>For some reason this is not working. Would appreciate help here. Thank you!</p>
 

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