我在我的应用程序中使用MVC Foolproof validation。
场景是我有一个名为CustomerType的下拉列表，其中包含以下值
Id Name
1 Student
2 Non-Employed
3 Employed
4 SelfEmployed
我的视图模型public string CompanyAddress{ get; set; }中还有一个属性。我的目标是使公司地址required if下拉列表具有值3 or 4
我试过以下
[Required(ErrorMessage = "Please select status of the customer", AllowEmptyStrings = false)]
public int? customerTypeID { get; set; }
public SelectList customerTypeList { get; set; }
[RequiredIf("IsCompanyAddressRequired", true, ErrorMessage = "please enter company address")]
public string CompanyAddress { get; set; }
public bool IsCompanyAddressRequired
{
get
{
if (customerTypeID == 3 || customerTypeID == 4)
{
return true;
}
else
{
return false;
}
}
}
以上代码在服务器端正常运行，但在客户端，我收到以下错误
`Uncaught TypeError: Cannot read property 'value' of undefined`
验证的引用如下
bundles.Add(new ScriptBundle("~/bundles/jqueryval").Include(
"~/plugins/jQueryVal/jquery.unobtrusive*",
"~/plugins/jQueryVal/jquery.validate*",
"~/plugins/foolproofValidation/MvcFoolproofJQueryValidation.min.js",
"~/plugins/foolproofValidation/mvcfoolproof.unobtrusive.min.js",
"~/plugins/foolproofValidation/MvcFoolproofValidation.min.js"
));
答案 0 :(得分：6)
您的验证属性无法在客户端上的客户端上运行，除非您要生成输入（例如）public class Coffee {
//Instance Variables
private double sugar;
private int milk;
private boolean isHot; // renamed heat to isHot
private int size;
// Constructor
public Coffee (double id, int dairy, boolean temp ) {
sugar = id;
milk = dairy;
heat = temp;
}
// (setter)
public void setSugar(double id) {
this.sugar = id;
}
public void setMilk(int dairy) {
this.milk = dairy;
}
public void setSize(int size) {
this.size = size;
}
public void setHeat(boolean isHot) {
this.isHot = isHot;
}
//(getter)
public double getSugar() {
return this.sugar;
}
public int getMilk() {
return this.milk;
}
public boolean checkIfHot() {
return this.isHot;
}
public int getSize() {
return this.size;
}
// Method to display data, (need to work on this)
static void display() {
System.out.println("You added " + getSugar() + " tablespoons of sugar to your coffee");
System.out.println("You have " + getMilk() + " in your coffee");
System.out.println("That's a " + getSize() + " ounce cup");
System.out.println("Is the cup hot? " + checkIfHot());
}
// Default Constructor (need help with setting heat to a default)
public Coffee() {
sugar = 0.0;
milk = 0;
heat = false;
size = 0;
}
}
（或<input name="IsCompanyAddressRequired" value="false" />，具体取决于value="true"的初始值）和然后在下拉列表值更改时使用javascript动态更新value属性。
改为使用
customerTypeID并删除您的[RequiredIf("customerTypeID", Operator.GreaterThan, 2, ErrorMessage = "..")]
public string CompanyAddress { get; set; }
媒体资源。