javascript - JSON.stringify 子数组在 Controller 上为空

Question

有很多此类问题，查看所有这些问题，我不太确定我的设置有何不同。

我尝试了 ajax 数据的几种不同变体以及如何格式化 JSON，但这似乎让我最接近。我之前已经这样做过好几次了，但从未遇到过这个问题。

当我点击 Controller 时，modelDetails 是一个完整的对象，并且 ScopeRecord 填充了数据。但是，每个子数组都是空的——包括 ProcedureFields，这是没有意义的。它不是 null，但计数为 0。

简化的js:

$("#submitButton")
    .click(function() {
    var result = {};
    result.ScopeRecord = {};
    result.ScopeRecord.ReferenceNumber = "testing123";
    result.RoomFields = [];
    result.BioFields = [];
    result.ReprocessingFields = [];
    result.CultureFields = [];
    result.ProcedureFields = [];

    var fieldInfo = {};

    //examDate
    fieldInfo.FieldID = 1;
    fieldInfo.FieldValue = "test me";
    fieldInfo.ItemHistoryID = 3;
    fieldInfo.AssociationID = 2;
    fieldInfo.IsModified = 1;
    result.ProcedureFields.push(fieldInfo);
    result.ProcedureFields.push(fieldInfo);
    result.ProcedureFields.push(fieldInfo);

    var options = {};
    options.url = "/MyController/SaveDetails";
    options.type = "POST";
    options.traditional = true;
    var test = JSON.stringify(result);
    options.data = test;
    options.contentType = "application/json; charset=UTF-8";
    options.dataType = "json";
    $.ajax(options);
});

我的请求数据:

"{
    "ScopeRecord":
    {
        "ReferenceNumber":"testing123"
    },
    "RoomFields":[],
    "BioFields":[],
    "ReprocessingFields":[],
    "CultureFields":[],
    "ProcedureFields":
        [{
            "FieldID":1,
            "FieldValue":"test me",
            "ItemHistoryID":3,
            "AssociationID":2,
            "IsModified":1
         },
         {
            "FieldID":1,
            "FieldValue":"test me",
            "ItemHistoryID":3,
            "AssociationID":2,
            "IsModified":1
         },
         {
            "FieldID":1,
            "FieldValue":"test me",
            "ItemHistoryID":3,
            "AssociationID":2,
            "IsModified":1
         }]
  }"

Controller :

[HttpPost]
public ActionResult SaveDetails(RecordDetails modelDetails)
{
     ....
}

型号:

public class RecordDetails
{
    public ScopeRecord ScopeRecord { get; set; }
    public List<FieldInfo> ProcedureFields = new List<FieldInfo>();
    public List<FieldInfo> RoomFields = new List<FieldInfo>();
    public List<FieldInfo> BioFields = new List<FieldInfo>();
    public List<FieldInfo> ReprocessingFields = new List<FieldInfo>();
    public List<FieldInfo> CultureFields = new List<FieldInfo>();
}

public class FieldInfo
{
    public int ItemHistoryID { get; set; }
    public int FieldID { get; set; }
    public string FieldValue { get; set; } 
    public bool IsModified { get; set; }
    public int? AssociationID { get; set; } 
}

我尝试过 options.data = { modelDetails : JSON.stringify(result) }; 但这给了我一个 500 错误。

我缺少什么部分？

Answer 1

DefaultModelBinder 无法设置字段的值。您需要通过添加 getter/setter 来创建集合属性

public class RecordDetails
{
    public ScopeRecord ScopeRecord { get; set; }
    public List<FieldInfo> ProcedureFields { get; set; }
    public List<FieldInfo> RoomFields = { get; set; }
    ....