HTML5中custom data-*特性与asp.net mvc 3 表单验证
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时间：2015年06月09日
在Asp.net MVC Web App中原来我们对表单有验证，需要写这个js与Jquery Validation 插件配合, 回顾一下，看下面的代码:
<!DOCTYPE html>
<html>
<head>
<title>LoginWithModel</title>
<script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.5.1.min.js" type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.7/jquery.validate.pack.js"
type="text/javascript"></script>
</head>
<body>
<form action="/Security/LoginWithModel" method="post"> <table>
<tr>
<td>
<label for="UserName">User name</label>
</td>
<td>
<input id="UserName" name="UserName" type="text" value="" />
</td>
</tr>
<tr>
<td>
<label for="Email">Email address</label>
</td>
<td>
<input id="Email" name="Email" type="text" value="" />
</td>
</tr>
<tr>
<td>
<label for="Password">Password</label>
</td>
<td>
<input id="Password" name="Password" type="password" />
</td>
</tr>
<tr>
<td>
<label for="ConfirmPassword">Confirm password</label>
</td>
<td>
<input id="ConfirmPassword" name="ConfirmPassword" type="password" />
</td>
</tr>
</table>
<input type="submit" value="Submit" />
</form> <script src="../../Scripts/MyformValidatation.js" type="text/javascript"></script>
</body>
</html>
JS 通常像这样:
$(document).ready(function () {
$.validator.addMethod(‘Email‘, function (value) {
return /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/.test(value);
}, ‘Please enter correct email.‘);
$("form").validate({
rules: {
UserName: { required: true },
Email: { required: true, Email: true },
Password: { required: true, range: [6, 12] },
ConfirmPassword: { required: true, equalTo: "#Password" }
}
, messages: {
UserName: { required: "Please enter UserName" },
Email: { required: "Please enter Email", Email: "Please enter corret email" },
Password: { required: "Please enter Password", range: "must be at least 6 characters long." },
ConfirmPassword: { required: "Please enter confirm password." }
}
, wrapper: "p",
errorPlacement: function (error, element) {
if (error != null) {
error.insertAfter(element);
}
}
})
});
接下来我们在Asp.net MVC 3 web 中，启用Unobtrusive JavaScript来帮做验证，我们只需在Web.config设置
<add key="ClientValidationEnabled" value="true"/>
<add key="UnobtrusiveJavaScriptEnabled" value="true"/>
View, 先引用jquery.validate.unobtrusive.min.js,接着是这样的：
@model Mvc3App.Models.RegisterModel
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<title>LoginWithModel</title>
<script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.5.1.min.js" type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.7/jquery.validate.pack.js"
type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.validate.unobtrusive.min.js"
type="text/javascript"></script>
</head>
<body>
@Html.ValidationSummary("Errors have occurred:")
@using (Html.BeginForm())
{
<table>
<tr>
<td>
@Html.LabelFor(m => m.UserName)
</td>
<td>
@Html.TextBoxFor(i => i.UserName)
@Html.ValidationMessageFor(i => i.UserName)
</td>
</tr>
<tr>
<td>
@Html.LabelFor(m => m.Email)
</td>
<td>
@Html.TextBoxFor(i => i.Email)
@Html.ValidationMessageFor(i => i.Email)
</td>
</tr>
<tr>
<td>
@Html.LabelFor(m => m.Password)
</td>
<td>
@Html.PasswordFor(i => i.Password)
@Html.ValidationMessageFor(i => i.Password)
</td>
</tr>
<tr>
<td>
@Html.LabelFor(m => m.ConfirmPassword)
</td>
<td>
@Html.PasswordFor(i => i.ConfirmPassword)
@Html.ValidationMessageFor(i => i.ConfirmPassword)
</td>
</tr>
</table>
<input type="submit" value="Submit" />
}
</body>
</html>
Model类, 注意上面使用是System.ComponentModel.DataAnnotations特性。
public class RegisterModel
{
[Required]
[Display(Name = "User name")]
[RegularExpression("^[A-Za-z0-9]+$",ErrorMessage="Please correct format user name.")]
public string UserName { get; set; }
[Required]
[DataType(DataType.EmailAddress)]
[Display(Name = "Email address")]
[RegularExpression(@"^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$", ErrorMessage = "Please correct format Email.")]
public string Email { get; set; }
[Required]
[StringLength(12, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
[DataType(DataType.Password)]
[Display(Name = "Password")]
public string Password { get; set; }
[DataType(DataType.Password)]
[Display(Name = "Confirm password")]
[Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
public string ConfirmPassword { get; set; }
}
这时最后render出来html，你有看到那些验证规则都出来了:
<!DOCTYPE html>
<html>
<head>
<title>LoginWithModel</title>
<script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.5.1.min.js" type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.7/jquery.validate.pack.js"
type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.validate.unobtrusive.min.js"
type="text/javascript"></script>
</head>
<body>
<form action="/Security/LoginWithModel" method="post"> <table>
<tr>
<td>
<label for="UserName">User name</label>
</td>
<td>
<input data-val="true" data-val-regex="Please correct format user name." data-val-regex-pattern="^[A-Za-z0-9]+$" data-val-required="The User name field is required." id="UserName" name="UserName" type="text" value="" />
<span class="field-validation-valid" data-valmsg-for="UserName" data-valmsg-replace="true"></span>
</td>
</tr>
<tr>
<td>
<label for="Email">Email address</label>
</td>
<td>
<input data-val="true" data-val-regex="Please correct format Email." data-val-regex-pattern="^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$" data-val-required="The Email address field is required." id="Email" name="Email" type="text" value="" />
<span class="field-validation-valid" data-valmsg-for="Email" data-valmsg-replace="true"></span>
</td>
</tr>
<tr>
<td>
<label for="Password">Password</label>
</td>
<td>
<input data-val="true" data-val-length="The Password must be at least 6 characters long." data-val-length-max="12" data-val-length-min="6" data-val-required="The Password field is required." id="Password" name="Password" type="password" />
<span class="field-validation-valid" data-valmsg-for="Password" data-valmsg-replace="true"></span>
</td>
</tr>
<tr>
<td>
<label for="ConfirmPassword">Confirm password</label>
</td>
<td>
<input data-val="true" data-val-equalto="The password and confirmation password do not match." data-val-equalto-other="*.Password" id="ConfirmPassword" name="ConfirmPassword" type="password" />
<span class="field-validation-valid" data-valmsg-for="ConfirmPassword" data-valmsg-replace="true"></span>
</td>
</tr>
</table>
<input type="submit" value="Submit" />
</form>
</body>
</html>
有注意到上面的html中，有加入相应data-*特性。这就是ASP.NET MVC 3 特性之一，注意这里必须使用BeginForm才能生成它们。最后我们能实现相同的验证效果，而我们不需要单独写JS了。别需要注意是，如果引入jquery.validate.unobtrusive相关js, 再其它地方使用 $("form").validate() 时，则不会生效。原因是jquery.validate.unobtrusive提前注册validate方法，它会与你自已定义冲突.
如果你想看看有哪个内在验证规则，可以运行下面的html:
<!DOCTYPE html>
<html>
<head>
<title>jQuery Validate Unobtrusive demo</title>
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.6.2.js" type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.8.1/jquery.validate.js"
type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.validate.unobtrusive.js"
type="text/javascript"></script>
<style type="text/css">
body, input
{
font-size: 9pt;
}
.input-validation-error
{
border: 1px solid #ff0000;
}
.input-validation-valid
{
border: 1px solid #00ff00;
}
.field-validation-error
{
color: #ff0000;
}
.field-validation-valid
{
display: none;
}
.validation-summary-errors
{
font-weight: bold;
color: #ff0000;
}
.validation-summary-valid
{
display: none;
}
</style>
</head>
<body>
<form id="form1" method="get">
<div data-valmsg-summary="true">
<ul>
</ul>
</div>
<div>
<input type="text" id="tReq" name="tReq" data-val="true" data-val-required="requried" />
<span data-valmsg-for="tReq"></span>
</div>
<div>
<input type="text" id="tAccept" name="tAccept" value="a.doc" data-val="true" data-val-accept="name must be .jpg、.gif or .png"
data-val-accept-exts="jpg|gif|png" />
<span data-valmsg-for="tAccept"></span>
</div>
<div>
<input type="text" id="tRegex" name="tRegex" value="123-ABC@" data-val="true" data-val-regex="Format as 999-999"
data-val-regex-pattern="[0-9A-Z]{3}-[0-9A-Z]{3}" />
<span data-valmsg-for="tRegex"></span>
</div>
<div>
<input type="text" id="tDigit" name="tDigit" value="-1234" data-val="true" data-val-digits="should be digital" />
<span data-valmsg-for="tDigit"></span>
</div>
<div>
<input type="text" id="tNum" name="tNum" value="-1,234.56A" data-val="true" data-val-number="should be number" />
<span data-valmsg-for="tNum"></span>
</div>
<div>
<input type="text" id="tDate" name="tDate" value="X/01/X2000" data-val="true" data-val-date="should be digital Date" />
<span data-valmsg-for="tDate"></span>
</div>
<div>
<input type="text" id="tEmail" name="tEmail" value="jeffrey @mail.com" data-val="true"
data-val-email="should be Email" />
<span data-valmsg-for="tEmail"></span>
</div>
<div>
<input type="text" id="tUrl" name="tUrl"