我在帖子上遇到了模型问题。 ＆＃39; EmployeeDetailses＆＃39;使用Ajax调用发布模型时为null。我用Fiddler检查了它，但JSON模型实际上很好。问题在于模型作为参数传递给控制器。
var EmployeeViewModel = function () {
// Make the self as 'this' reference
var self = this;
// Declare observable which will be bind with UI
self.EmployeeId = ko.observable("");
self.FirstName = ko.observable("");
self.MiddleName = ko.observable("");
self.Tussenvoegsel = ko.observable("");
self.LastName = ko.observable("");
self.FullName = ko.observable("");
self.EmployeeEmail = ko.observable("");
self.PersonalNumber = ko.observable("");
self.PhoneNumber = ko.observable("");
//The Object which stored data entered in the observables
var EmployeeData = {
EmployeeId: self.EmployeeId,
FirstName: self.FirstName,
MiddleName: self.MiddleName,
Tussenvoegsel: self.Tussenvoegsel,
LastName: self.LastName,
FullName: self.FullName,
EmployeeEmail: self.EmployeeEmail,
EmployeeDetailses: {
PhoneNumber: self.PhoneNumber,
PersonalNumber: self.PersonalNumber
}
};
// Declare an ObservableArray for Storing the JSON Response
self.Employees = ko.observableArray([]);
GetEmployees(); // Call the Function which gets all records using ajax call
// Function to Read All Employees
function GetEmployees() {
// Ajax Call Get All Employee Records
$.ajax({
type: "GET",
url: "/api/EmployeeApi",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (data) {
self.Employees(data); // Put the response in ObservableArray
},
error: function (error) {
alert(error.status + "<--and--> " + error.statusText);
}
});
// Ends Here
}
// Function to Display record to be updated
self.getEmployeeDetails = function (employee) {
self.EmployeeId(employee.EmployeeId),
self.FirstName(employee.FirstName),
self.MiddleName(employee.MiddleName),
self.Tussenvoegsel(employee.Tussenvoegsel),
self.LastName(employee.LastName),
self.FullName(employee.FullName),
self.EmployeeEmail(employee.EmployeeEmail),
self.PersonalNumber(employee.EmployeeDetailses[0].PersonalNumber),
self.PhoneNumber(employee.EmployeeDetailses[0].PhoneNumber)
};
// Function to perform POST (insert Employee) operation
self.save = function () {
// Ajax call to Insert the Employee
$.ajax({
type: "POST",
url: "/api/EmployeeApi",
contentType: "application/json",
dataType: "json",
data: ko.mapping.toJSON(EmployeeData), // Convert the Observable Data into JSON
success: function () {
alert("Record Added Successfully");
GetEmployees();
},
error: function () {
alert("Failed");
}
});
// Ends Here
};
};
ko.applyBindings(new EmployeeViewModel());<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.0.0/knockout-min.js"></script>
@using Resources
@model dynamic
@{
ViewBag.Title = "Index";
}
<html>
<head>
<title>Employee Index</title>
<link href="~/Content/Site.css" rel="stylesheet" />
</head>
<body>
<form>
<div id="container">
<!--Bind the TextBoxes in the Table to the observable properties defined into the ViewModel -->
<table id="tblEmployeeView">
<tr>
<td>
<label id="lblFirstName">@Resource.FirstName</label>
</td>
<td>
<input type="text" id="txtFirstName" data-bind="value: $root.FirstName" />
</td>
</tr>
<tr>
<td>
<label id="lblMiddleName">@Resource.MiddleName</label>
</td>
<td>
<input type="text" id="txtMiddleName" data-bind="value: $root.MiddleName" />
</td>
</tr>
<tr>
<td>
<label id="lblNamePrefix">@Resource.NamePrefix</label>
</td>
<td>
<input type="text" id="txtNamePrefix" data-bind="value: $root.Tussenvoegsel" />
</td>
<td>
<label id="lblLastName">@Resource.LastName</label>
</td>
<td>
<input type="text" id="txtLastName" data-bind="value: $root.LastName" />
</td>
</tr>
<tr>
<td>
<label id="lblEmail">@Resource.Email</label>
</td>
<td>
<input type="text" id="txtEmail" data-bind="value: $root.EmployeeEmail" />
</td>
</tr>
<tr>
<td>
<label id="lbPersonalNo">@string.Format("{0} {1}", Resource.Personal, Resource.Number.ToLower())</label>
</td>
<td>
<input type="text" id="txtPersonalNo" data-bind="value: $root.PersonalNumber" />
</td>
</tr>
<tr>
<td>
<label id="lbPhoneNo">@string.Format("{0} {1}", Resource.Phone, Resource.Number.ToLower())</label>
</td>
<td>
<input type="text" id="txtPhoneNo" data-bind="value: $root.PhoneNumber" />
</td>
</tr>
<tr>
<td>
<button data-bind="click: $root.save">Save new</button>
</td>
</tr>
</table>
<div class="Fixed">
<table id="tblEmployees" data-bind="visible: Employees().length>0" style="border: double">
<thead>
<tr>
<td>Full name</td>
</tr>
</thead>
<tbody data-bind="foreach: Employees">
<tr id="objEmployee" data-bind="click: $root.getEmployeeDetails" style="cursor: pointer">
<td><span data-bind="text: $root.FullName"></span></td>
</tr>
</tbody>
</table>
</div>
</div>
</form>
<script src="~/Scripts/jquery-1.11.2.js"></script>
<script src="~/Scripts/knockout-3.0.0.js"></script>
<script src="~/Scripts/knockout.mapping-latest.debug.js"></script>
<script src="~/Scripts/ViewScripts/Employee/EmployeeViewModel.js"></script>
</body>
</html>
以下是控制器上的代码：
public HttpResponseMessage PostEmployee(Employee employee)
{
// Validate model
if (!ModelState.IsValid) return Request.CreateResponse(HttpStatusCode.BadRequest);
try
{
// Add employee
UoW.Empleyee.Add(employee);
// Save the new employee
UoW.Commit();
// Log change
ApplicationLog.LogChange(new UpdateException("New employee created by userId:" + Globals.Employee.EmployeeId), "Employee id:" + employee.EmployeeId + " created successfully.");
}
catch (Exception ex)
{
// Log error
ApplicationLog.LogError(ex, "UserId:" + Globals.Employee.EmployeeId + " failed adding a new employee.");
throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.Conflict));
}
// Create response with the new created model
var response = Request.CreateResponse(HttpStatusCode.Created, employee);
response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = employee.EmployeeId }));
return response;
}
模型是：
public class Employee : EntityBase, IValidatableObject
{
#region Properties
// Self generated field for Id
[Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int EmployeeId { set; get; }
// Company mandatory
[Required]
public int CompanyId { get; set; }
[ForeignKey("CompanyId")]
public Company Company { get; set; }
// First name mandatory, max length 75
[Required, StringLength(75)]
public string FirstName { get; set; }
// Middle name not mandatory, max length 75
[StringLength(75)]
public string MiddleName { get; set; }
// Last name mandatory, max length 75
[Required, StringLength(75)]
public string LastName { get; set; }
// Tussenvoegsel (example: van de) not mandatory, max length 15
[StringLength(15)]
public string Tussenvoegsel { get; set; }
// Email addressa mandatory, max length 150
[Required, StringLength(150)]
public string EmployeeEmail { get; set; }
// Object status mandatory
[Required]
public int ObjectStatusId { get; set; }
[ForeignKey("ObjectStatusId")]
public ObjectStatus ObjectStatus { get; set; }
// Enumerable collection for employee details
public virtual ICollection<EmployeeDetails> EmployeeDetailses { get; set; }
#endregion
#region Custom properties
// Full name of employee
public string FullName
{
get
{
// E.g: Andrew, Marteen, de Fulshrad
if (!string.IsNullOrEmpty(MiddleName) && !string.IsNullOrEmpty(Tussenvoegsel))
return string.Format("{0}, {1}, {2} {3}", FirstName, MiddleName, Tussenvoegsel, LastName);
// E.g: Andrew, Marteen, Fulshrad
if (!string.IsNullOrEmpty(MiddleName) && string.IsNullOrEmpty(Tussenvoegsel))
return string.Format("{0}, {1}, {2}", FirstName, MiddleName, LastName);
// E.g: Andrew,de Fulshrad
if (string.IsNullOrEmpty(MiddleName) && !string.IsNullOrEmpty(Tussenvoegsel))
return string.Format("{0}, {1} {2}", FirstName, Tussenvoegsel, LastName);
// E.g: Andrew, Fulshrad
if (string.IsNullOrEmpty(MiddleName) && string.IsNullOrEmpty(Tussenvoegsel))
return string.Format("{0}, {1}", FirstName, LastName);
return null;
}
}
我做错了什么？
答案 0 :(得分：0)
发现了这个问题。由于我忘记了集合的“[]”这个事实，该模型没有被正确解析
var EmployeeData = {
EmployeeId: self.EmployeeId,
FirstName: self.FirstName,
MiddleName: self.MiddleName,
Tussenvoegsel: self.Tussenvoegsel,
LastName: self.LastName,
FullName: self.FullName,
EmployeeEmail: self.EmployeeEmail,
EmployeeDetailses: [{
PhoneNumber: self.PhoneNumber,
PersonalNumber: self.PersonalNumber
}]
};