如何在客户端触发自定义验证器? 这就是我现在所拥有的:
我的验证课程:
public class AlmostEqual : ValidationAttribute, IClientValidatable
{
private readonly string _otherProperty;
private readonly float _myPercent;
public AlmostEqual(string otherProperty,float percent)
{
_otherProperty = otherProperty;
_myPercent = percent;
}
protected override ValidationResult IsValid(object value, ValidationContext validationContext)
{
var property = validationContext.ObjectType.GetProperty(_otherProperty);
var otherPropertyValue = property.GetValue(validationContext.ObjectInstance, null);
dbEntities db = new dbEntities();
Metal metal = db.Metals.Find(Convert.ToInt32(otherPropertyValue));
double _unitWeight = metal.UnitWeight;
double _percent = metal.UnitWeight * (_myPercent / 100);
double myProperty = double.Parse(value.ToString());
bool result = myProperty >= _unitWeight - _percent && myProperty <= _unitWeight + _percent;
if (!result)
{
return new ValidationResult(string.Format(
CultureInfo.CurrentCulture,
FormatErrorMessage(validationContext.DisplayName),
new[] { _otherProperty }
));
}
return null;
}
public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
var rule = new ModelClientValidationRule
{
ErrorMessage = FormatErrorMessage(metadata.GetDisplayName()),
ValidationType = "almostequal",
};
rule.ValidationParameters.Add("other", _otherProperty);
yield return rule;
}
}
Metdata类的代码:
[Required]
[AlmostEqual("IDMetal",5,ErrorMessage="Weight do not correspond with dimensions.")]
public Nullable<double> UnitWeight { get; set; }
}
在视图中我添加了这个js:
<script type="text/javascript">
$.validator.unobtrusive.adapters.addBool("almostequal", "Range");
</script>
我的webconfig包含:
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />
我收到错误:
未捕获的TypeError:无法读取属性&#39; call&#39;未定义的文件 第27行的jquery.validate.min.js
答案 0 :(得分:1)
看看这个:http://thewayofcode.wordpress.com/tag/custom-unobtrusive-validation/
我可以在您的代码中发现的唯一区别是您创建$.validator.unobtrusive.adapters.addBool
函数的方式。参数有点不同,但问题可能只是你没有定义适配器的规则部分。
尝试使用以下内容:
$.validator.unobtrusive.adapters.add("almostequal", function (options) {
options.rules["almostequal"] = "#" + options.element.name.replace('.', '_'); // mvc html helpers
options.messages["almostequal"] = options.message;
});
关于规则:
此HTML元素的jQuery规则数组。期望适配器将项添加到此规则数组中,以用于要附加的特定jQuery Validate验证器。名称是jQuery Validate规则的名称,值是jQuery Validate规则的参数值。