MVC Radiobutton绑定复杂对象

Question

我有MVC3 web应用程序，我们需要使用验证来填充单选按钮列表。我的模型是这样的：

public class EmployeesViewModel 
{ 
    public List<Employee> listEmployee { get; set; } //To persist during post 
    public IEnumerable<SelectListItem> selectListEmployee { get; set; } 

    [Required] 
    public Employee selectedEmployee { get; set; } 
} 

public class Employee 
{ 
    public int ID {get; set;} 
    public string Name {get; set} 
    public string Department {get; set} 
} 

我需要填充的单选按钮列表类似下面：

• Employee1ID - Employee1Name - Employee1Department // ID - 名称 - 部门
• Employee2ID - Employee2Name - Employee2Department
• Employee3ID - Employee3Name - Employee3Department

选定的员工应存储在“selectedEmployee”字段中。在MVC3中填充这些单选按钮列表的最好或干净的方法是什么？

注：主要是找两个任务： 1.存储“雇员”中的每个“输入”单选按钮标签的对象，这样选择的员工将被保存到“selectedEmployee”字段 2.最好的方式来纪念“员工“对象作为需要的字段

非常感谢您的帮助！

感谢，

Answer 1

这里就是我会推荐你​​。开始用干净的视图模型，一个真正表达什么视图包含的信息：

public class EmployeesViewModel 
{ 
    public List<EmployeeViewModel> ListEmployee { get; set; } 

    [Required] 
    public int? SelectedEmployeeId { get; set; } 
} 

public class EmployeeViewModel 
{ 
    public int ID { get; set; } 
    public string Label { get; set; } 
} 

然后控制器：

public class HomeController : Controller 
{ 
    public ActionResult Index() 
    { 
     var model = new EmployeesViewModel 
     { 
      ListEmployee = GetEmployees() 
     }; 
     return View(model); 
    } 

    [HttpPost] 
    public ActionResult Index(EmployeesViewModel model) 
    { 
     if (!ModelState.IsValid) 
     { 
      // the model is invalid, the user didn't select an employee 
      // => refetch the employee list from the repository and 
      // redisplay the view so that he can fix the errors 
      model.ListEmployee = GetEmployees(); 
      return View(model); 
     } 

     // validation passed at this stage 
     // TODO: model.SelectedEmployeeId will contain the id 
     // of the selected employee => use your repository to fetch the 
     // actual employee object and do something with it 
     // (like grant him the employee of the month prize :-)) 

     return Content("thanks for submitting", "text/plain"); 
    } 

    // TODO: This doesn't belong here obviously 
    // it's only for demonstration purposes. In the real 
    // application you have a repository, use DI, ... 
    private List<EmployeeViewModel> GetEmployees() 
    { 
     return new[] 
     { 
      new EmployeeViewModel { ID = 1, Label = "John (HR)" }, 
      new EmployeeViewModel { ID = 2, Label = "Peter (IT)" }, 
      new EmployeeViewModel { ID = 3, Label = "Nathalie (Sales)" }, 
     }.ToList(); 
    } 
} 

最后一个观点：

@model EmployeesViewModel 

@using (Html.BeginForm()) 
{ 
    @Html.ValidationMessageFor(x => x.SelectedEmployeeId) 
    @foreach (var employee in Model.ListEmployee) 
    { 
     <div> 
      @Html.RadioButtonFor(x => x.SelectedEmployeeId, employee.ID, new { id = "emp" + employee.ID }) 
      @Html.Label("emp" + employee.ID, employee.Label) 
     </div> 
    } 
    <input type="submit" value="OK" /> 
}