我的viewmodel中有以下属性使用敲除验证,其中一个是自定义验证来检查密码匹配。
model.Password = ko.observable()
.extend({ required: { message: "Password is required.",
params: true,
onlyIf: function () { return model.IsCredentialsRequired(); }}
});
model.ConfirmPassword = ko.observable().
extend({ validation: { validator: mustEqual,
message: 'Passwords do not match.',
params: model.Password,
onlyIf: function () { return model.IsCredentialsRequired(); } }
});
自定义验证功能的代码
var mustEqual = function (val, other) {
return val == other();
};
我发现OnlyIf
条件适用于model.Password
,具体取决于model.IsCredentialsRequired()
,但它不适用于model.ConfirmPassword
,有人可以帮我解释为什么会这样吗?有吗?我可以用任何其他方式对自定义规则使用条件验证吗?
提前致谢
答案 0 :(得分:17)
敲门验证目前不支持匿名规则的'onlyIf'。但它支持自定义规则。因此,您可以创建自定义规则并仅使用以下内容:
ko.validation.rules['confirmPasswordMatches'] = {
validator: function (val, params) {
var otherValue = params;
return val === ko.validation.utils.getValue(otherValue);
},
message: 'Passwords do not match.',
};
ko.validation.registerExtenders();
function ViewModel() {
var self = this;
self.IsCredentialsRequired = ko.observable(true);
self.Password = ko.observable()
.extend({
required: {
message: "Password is required.",
params: true,
onlyIf: self.IsCredentialsRequired
}
});
self.ConfirmPassword = ko.observable().
extend({
confirmPasswordMatches: {
params: self.Password,
onlyIf: self.IsCredentialsRequired
}
});
}