如何通过调用ajax post保存数据时显示模型状态错误

Posted 2023-05-09

【中文标题】如何通过调用ajax post保存数据时显示模型状态错误

【英文标题】：How to show model state errors while saving data by calling ajax post

【发布时间】：2020-04-16 04:25:18

【问题描述】：

我在我的操作方法中尝试的是，当模型状态无效时，我用模型数据重定向视图，但它无法在视图中显示错误

public ActionResult Create(IndentmstViewData model)

    model.fk_sessionUserid = Session["userID"].ToString();
    model.fk_sessionLocid = Session["fk_locid"].ToString();
    model.pk_IndentId = Convert.ToInt32(TempData["EditId"]);

    if (ModelState.IsValid)
    
        XDocument doc = new XDocument(new XDeclaration("1.0", "UTF - 8", "yes"),
           new XElement("XMLdata",
           from itemdet in model.GetItemDetails
           select new XElement("ItemDetails",
           new XElement("fk_itemid", itemdet.fk_ItemId),
           new XElement("qty", itemdet.Qty),
           new XElement("balqty", itemdet.indbalqty),
           new XElement("estimatedcost", itemdet.EstimatedCost),
           new XElement("partno", itemdet.PartNo),
           new XElement("itemdesc", itemdet.itemDesc),
           new XElement("fk_indentid", model.pk_IndentId))));

        model.doc = doc.ToString();

        if (model.pk_IndentId == 0)
        
            _indent_mstService.Save(model.ADTO());
        
        else
        
            _indent_mstService.Update(model.ADTO());
        

    
    else
    
        string fk_locid = Session["fk_locid"].ToString();
        model.IndentDate = DateTime.Now.ToString("dd/MM/yyyy").Replace("-", "/").ToString();
        model.GetMenuData = GetMenuByUser();
        model.GetItems = _HomeService.GetItems().ToList();
        model.IndentNo = _indent_mstService.GetAutoIndentNo(fk_locid).FirstOrDefault();
        return View(model);
    

    return Json(model, JsonRequestBehavior.AllowGet);

jQuery Ajax Post 方法是

$.ajax(
    url: $('#SaveDetails').val(),
    type: "POST",
    data: JSON.stringify(data),
    dataType: "JSON",
    contentType: "application/json",
    success: function (data) 
        window.location.replace("http://addusharma.somee.com/Indent_mst/Create");
        alert("Record Save Successfully !!");
    ,
    error: function (data) 
        alert("error");
        $('#form').empty();
        var result = $(Data).find('#form').html();
        $('#form').html(result);
    
);

我想要实现的是，当模型状态无效时，它应该在我的视图中显示模型错误

【参考方案1】：

Ajax error 函数只有在请求失败时才会启动。在您的情况下，控制器在两种情况下都返回成功结果。所以你需要在 success 函数中处理所有事情。

success: function (data, text, xhr)   
    if(xhr.hasOwnProperty('responseJSON'))
        window.location.replace("http://addusharma.somee.com/Indent_mst/Create");
        alert("Record Save Successfully !!");            
    
    else
        alert("error");
        $('#form').empty();
        var result = $(data).find('#form').html();
        $('#form').html(result);
                      
,

【参考方案2】：

要显示验证错误，您需要在视图中使用验证摘要。

@Html.ValidationSummary(false)

要进一步了解如何使用 ValidationSummary，请阅读here。

【参考方案3】：

控制器

  public ActionResult Create(IndentmstViewData model)
    
        model.fk_sessionUserid = Session["userID"].ToString();
        model.fk_sessionLocid = Session["fk_locid"].ToString();
        model.pk_IndentId = Convert.ToInt32(TempData["EditId"]);

        if (ModelState.IsValid)
        
            XDocument doc = new XDocument(new XDeclaration("1.0", "UTF - 8", "yes"),
               new XElement("XMLdata",
               from itemdet in model.GetItemDetails
               select new XElement("ItemDetails",
               new XElement("fk_itemid", itemdet.fk_ItemId),
               new XElement("qty", itemdet.Qty),
               new XElement("balqty", itemdet.indbalqty),
               new XElement("estimatedcost", itemdet.EstimatedCost),
               new XElement("partno", itemdet.PartNo),
               new XElement("itemdesc", itemdet.itemDesc),
               new XElement("fk_indentid", model.pk_IndentId))));

            model.doc = doc.ToString();

            if (model.pk_IndentId == 0)
            
                _indent_mstService.Save(model.ADTO());
            
            else
            
                _indent_mstService.Update(model.ADTO());
            

            return JSON(new
            
                ResultStatus=false,
                Message="Here Success Message Text...",
                Result=new 
                
                    fk_sessionUserid= model.fk_sessionUserid,
                    fk_sessionLocid=model.fk_sessionLocid,
                    pk_IndentId=model.pk_IndentId,
                    Doc=model.doc
                
            );

        
        else
        
            return JSON(new
            
                ResultStatus=false,
                Message="Here Error Text...",
                Result=new 
                
                    IndentDate= DateTime.Now.ToString("dd/MM/yyyy").Replace("-", "/").ToString(),
                    GetMenuData= GetMenuByUser(),
                    GetItems=_HomeService.GetItems().ToList(),
                    IndentNo=_indent_mstService.GetAutoIndentNo(fk_locid).FirstOrDefault()
                
            );
        
    

JS

    $.ajax(
    url: $('#SaveDetails').val(),
    type: "POST",
    data: JSON.stringify(data),
    dataType: "JSON",
    contentType: "application/json",
    success: function (data) 
        if(data.ResultStatus==true)
        window.location.replace("http://addusharma.somee.com/Indent_mst/Create");
        alert(data.Message);
        else
         alert(data.Message);       
        

    ,
    error: function (data) 
        alert(data.Message);
        $('#form').empty();
        var result = $(Data).find('#form').html();
        $('#form').html(result);
    
);