jQuery.validator.unobtrusive.adapters.addMinMax round trips, doesn't work in MVC3

回答

Solved! I forgot/didn't understand that you have to pass jQuery itself into the function closure. Therefore the custom validator on the client side should look like this:

需要注意的是，仅有addMethod是无法成功添加rule的，还必须配合后面的adapter.add来确保生效

$(function () {
    jQuery.validator.addMethod('dayRange', function (value, element, param) {
        if (!value) return false;
        var valueDateParts = value.split(param.seperator);
        var minDate = new Date();
        var maxDate = new Date();
        var now = new Date();
        var dateValue = new Date(valueDateParts[2],
                            (valueDateParts[1] - 1),
                             valueDateParts[0],
                             now.getHours(),
                             now.getMinutes(),
                             (now.getSeconds()+5));

        minDate.setDate(minDate.getDate() - parseInt(param.min));
        maxDate.setDate(maxDate.getDate() + parseInt(param.max));

    return dateValue >= minDate && dateValue <= maxDate;
});

    jQuery.validator.unobtrusive.adapters.add('dayrange', ['min', 'max', 'dateseperator'], function (options) {
        var params = {
            min: options.params.min,
            max: options.params.max,
            seperator: options.params.dateseperator
        };

        options.rules['dayRange'] = params;
        if (options.message) {
            options.messages['dayRange'] = options.message;
        }
    });
}(jQuery));

如果是简单的，可以这么写，如果仅仅是一个返回Bool值的rule的话。

  jQuery.validator.addMethod('checkName', function (value, element, param) {
            var userName = "@employee.MemberLogin".toLowerCase();
            var name = "@employee.FirstName".toLowerCase();
            var surname = "@employee.LastName".toLowerCase();
            var password = value;
            var DoesContainFirstName = name.length > 0 && password.toLowerCase().indexOf(name) !== -1;
            var DoesContainLastName = surname.length > 0 && password.toLowerCase().indexOf(surname) !== -1;
            var DoesContainUserName = userName.length > 0 && password.toLowerCase().indexOf(userName) !== -1;
            if (!DoesContainFirstName && !DoesContainLastName && !DoesContainUserName) {
                return true;
            }
            return false;
        });
        jQuery.validator.unobtrusive.adapters.addBool("checkName");

完全自定义的话，可以这么写，核心是调用 that.unobtrusive("newp"); 自己封装的函数，里面会调用$.validator.unobtrusive.adapters.add方法

setNewPassword() {
      let that = this;
      $.validator.addMethod("newp", function(value, element, params) {
        let reg =
          /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[ !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~]).{10,50}$/;
        if (!value) {
          return true;
        }
        if (reg.test(value)) {
          var password = value.toLowerCase();
          if (
             password.indexOf(that.userInfo.FirstName.toLowerCase()) == -1 &&
            password.indexOf(that.userInfo.LastName.toLowerCase()) == -1 &&
            password.indexOf(that.userInfo.MemberLogin.toLowerCase()) == -1
          ) {
            return true;
          }
          return false;
        }
      });
      that.unobtrusive("newp");
    },
    unobtrusive(code) {
      $.validator.unobtrusive.adapters.add(code, ["va"], function(options) {
        options.rules[code] = {
          va: options.params.va
        };
        options.messages[code] = options.message;
      });
    },