我有模特课:
[FluentValidation.Attributes.Validator(typeof(CrcValidator))]
public class CrcModel
{
[Display(Name = "Binary value")]
public string binaryValue { get; set; }
[Display(Name = "Generator")]
public string generator { get; set; }
}
带谓词的验证器类:
public class CrcValidator : AbstractValidator<CrcModel>
{
public CrcValidator()
{
RuleFor(x => x.binaryValue)
.NotEmpty().WithMessage("Binary value is required")
.Matches(@"(0|1)*").WithMessage("This value is not valid binary value");
RuleFor(x => x.generator)
.NotEmpty().WithMessage("Generator is required")
.Matches(@"(0|1)*").WithMessage("Generator must be valid binary value")
.Must(CompareLength).WithMessage("Length must be lesser than length of binary value - 1");
}
private bool CompareLength(CrcModel model, string value)
{
return model.binaryValue.Length - 1 > model.generator.Length;
}
}
我在CompareLength函数中放置了断点,并且从表单中正确读取了每个值。问题是即使我的谓词函数返回false,我的表单也会通过验证。 NotEmpty和Matches规则工作得非常好只是似乎必须被忽略。
修改
jQuery for submit按钮(类型为“button”):
$(function () {
$("#Button1").click(function () {
var form = $("#Form1");
if ($(form).valid()) {
$.ajax({
type: 'POST',
url: 'Compute',
data: $(form).serialize(),
success: function (result) {
$("#remainder").val(result.remainder);
$("#signal").val(result.signal);
}
});
}
});
});
控制器动作处理表单提交:
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Compute([Bind(Include = "binaryValue,generator")] CrcModel model)
{
if (ModelState.IsValid)
{
model.remainder = ComputeFrame(model.binaryValue, model.generator);
model.signal = model.binaryValue + model.remainder;
}
return Json(new { remainder = model.remainder, signal = model.signal });
}
来自Must规则的验证适用于服务器端但消息未显示。
答案 0 :(得分:1)
编辑:在几条评论之后,FluentValidation中对Must
的所有调用中定义的验证仅在服务器上执行。没有相当于任意C#代码的JavaScript。 C#中的FluentValidation规则由MVC框架转换为HTML中表单字段标记上的各种HTML5 data-*
属性,jQuery Validate在客户端验证期间读取。由于无法将谓词(委托方法)中定义的验证规则转换为HTML5 data-*
属性,因此这些验证规则仅可强制执行服务器端。
编辑#2:看到Must
验证是由AJAX调用触发的,您需要做几件事:
将HTTP状态代码设置为非200响应,以触发jQuery中的错误处理机制。另外,将HTTP状态设置为422(Unprocessable Entity)
HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Compute([Bind(Include = "binaryValue,generator")] CrcModel model)
{
if (ModelState.IsValid)
{
model.remainder = ComputeFrame(model.binaryValue, model.generator);
model.signal = model.binaryValue + model.remainder;
return Json(new { remainder = model.remainder, signal = model.signal });
}
else
{
Response.StatusCode = 422;
return Json(new { errors = ModelState.Errors });
}
}
更改jQuery.ajax调用:
$(function () {
$("#Button1").click(function () {
var form = $("#Form1");
if ($(form).valid()) {
$.ajax({
type: 'POST',
url: 'Compute',
data: $(form).serialize(),
success: function (result) {
$("#remainder").val(result.remainder);
$("#signal").val(result.signal);
},
error: function(xhr) {
if (xhr.status == 422) {
var errors = JSON.parse(xhr.responseText);
console.log(errors);
}
}
});
}
});
});
另一种方法是只渲染一个将一个或多个错误消息显示为HTML的Partial,然后在DIV中设置该HTML并显示DIV标记。