Jquery/Ajax 更新 TABLE[ASP.NET 核心 MVC]

Question

我不确定在使用 AJAX Jquery 后如何刷新 table 数据。

我需要帮助。我有一个剃须刀视图，在按钮单击按钮上我发送了一个 post 请求，其中包含文本框和下拉选择的值，然后在控制器中，传递了烤面包机的 Json 响应状态。

下一个控制器 returns 一个视图并正确显示烤面包机状态。

主要问题是我不知道如何在烤面包机响应状态后用新插入的记录刷新 table。

这是我对控制器的看法：

@using SimplCommerce.WebHost.Models @model dynamic
<body>
    <form method="post" id="map_Form">

        <table id="tbl_btn">
            <tr>
                <td align="center">
                    <button type="submit">Catalog Mapping</button>
                </td>
            </tr>
        </table>

        <table id="tb_properties" style="width:100%">
            <tr>
                @foreach (ApiMapDbViewModel itemApiProp in Model.dynApiPropModel)
                {
                    <td>
                        <input type="text" value="@itemApiProp.Key" readonly="readonly" />
                        <hr />

                        <select>
                            <option value="">-Select-</option>
                            @foreach (ApiMapDbViewModel itemK360Prop in Model.dynK360PropModel)
                            {
                                <option>@itemK360Prop.Key</option>

                            }
                        </select>
                    </td>
                }
            </tr>
        </table>

        <div id="partial_div">
            @Html.Partial("KPartialIndex")
        </div>

    </form>
</body>
</html>

@section scripts{

    <script>
        $(function () {
            $("button[type='submit']").click(function () {
                event.preventDefault();
                var properties = [];
                $("#tb_properties tr:first").find("td").each(function (index, item) {
                    var propertyname = $(item).find("input[type='text']").val();
                    var selctedvalue = $(item).find("select").val();
                    properties.push('"' + propertyname + '":"' + selctedvalue + '"');
                });
                var jsonstr = '{' + properties.join(",") + '}';
                var jsobject = JSON.parse(jsonstr);

                $.ajax({
                    type: "Post",
                    url: "/KMap/Insert",
                    data: { jsonModel: jsobject },
                    success: function (response) {
                        toastr.error(response.status + "----->" + response.message);
                        //info//warning//error//success
                        toastr.options = {
                            "closeButton": false,
                            "debug": false,
                            "newestOnTop": false,
                            "progressBar": false,
                            "positionClass": "toast-top-center",
                            "preventDuplicates": false,
                            "onclick": null,
                            "showDuration": "1000",
                            "hideDuration": "1000",
                            "timeOut": "5000",
                            "extendedTimeOut": "1000",
                            "showEasing": "swing",
                            "hideEasing": "linear",
                            "showMethod": "fadeIn",
                            "hideMethod": "fadeOut"
                        };

                        $("#map_Form select").val("");
                        $("#partial_div").load("/KMap/LoadPartialViewOnPost"); // not working

                    },
                    error: function (xhr, textStatus, errorThrown) {
                        console.log('in error');
                    }
                });
            });
        });

    </script>
}

这是我的部分观点：

 @using SimplCommerce.WebHost.Models @model dynamic
<table>   
    @if (Model.dynMappedDataModel != null)

    {
        @foreach (K360mapMaster itemMappedData in Model.dynMappedDataModel)
        {
            <tr>
                <td>@itemMappedData.ClientCatalog</td>
                <td>@itemMappedData.K360catalog</td>
            </tr>
        }

    }
</table>

这是我的控制器：

 public IActionResult Index()
    {
        dynamic dynModel = new ExpandoObject();
        dynModel.dynApiPropModel = GetListApiProp();
        dynModel.dynMappedDataModel = ListMappedData();
        dynModel.dynK360PropModel = GetListK360Prop();
        return View(dynModel);
    }

    [HttpPost]
    public IActionResult LoadPartialViewOnPost()
    {
        dynamic mymodel = new ExpandoObject();
        mymodel.dynMappedDataModel = ListMappedData();
        return PartialView("KPartialIndex", mymodel);
    }

    public List<K360mapMaster> ListMappedData()
    {
        List<K360mapMaster> items = new List<K360mapMaster>();
        var query = from K360mapMaster in _context.K360mapMasters
                    select K360mapMaster;
        var mappings = query.ToList();
        foreach (var mappingData in mappings)
        {
            items.Add(new K360mapMaster()
            {
               
                ClientCatalog = mappingData.ClientCatalog,
                K360catalog = mappingData.K360catalog

            });
        }
        return items;
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public IActionResult Insert(ApiJsonViewModel jsonModel)
    {
        if (!ModelState.IsValid)
        {
            var errors = ModelState.SelectMany(x => x.Value.Errors, (y, z) => z.Exception.Message);
            return BadRequest(errors);
        }
        Type type = jsonModel.GetType();
        PropertyInfo[] props = type.GetProperties();
        List<K360mapMaster> K360mapListObj = new List<K360mapMaster>();

        K360mapListObj = props.Where(c => !string.IsNullOrEmpty(c.GetValue(jsonModel, null)?.ToString()))
                                        .Select(c => new K360mapMaster() { ClientCatalog = c.Name, K360catalog = c.GetValue(jsonModel, null)?.ToString() })
                                        .ToList();
        if (K360mapListObj.Count > 0)
        {
            try
            {
                var ListCatalogs = K360mapListObj.Select(l => l.ClientCatalog).ToList();

                foreach (var item in ListCatalogs)
                {
                    var DbCatalogs = (from p in _context.K360mapMasters
                                      where p.ClientCatalog == item
                                      select p).FirstOrDefault();
                    if (DbCatalogs != null)
                    {

                        return Json(new { Status = "This is an information notification provided by K360 eCommerce. ", Message = "Selected catalog  " + item + "  already mapped." });
                    }
                }
                _context.K360mapMasters.AddRange(K360mapListObj);
                _context.SaveChanges();                   
               return Json(new { Status = "This is a success notification from K360 eCommerce. ", Message = "Product catalog's mapped sucessfully." });
            }
            catch
            {
                return Json(new { Status = "This is an error notification provided by K360 eCommerce. ", Message = "Mapping failed" });
            }
        }
        else
        {
            return Json(new { Status = "This is a warning notification provided by K360 eCommerce. ", Message = "No product catalog selected." });
        }

    }

我想在烤面包机响应状态后刷新新的插入记录。请帮忙谢谢

问题现已解决。

在部分视图中为 table 提供了 ID。

并在Jquery Sucess 函数中添加了一段代码

  $("#par_tbl").load(window.location.href + " #par_tbl");

Answer 1

您可以使用 JQuery 遍历 <td> 元素，并使用 JQuery 选择器获取属性名称和选定值。然后，根据该值生成一个JS对象，并使用JQueryAjax调用controller的action方法，将对象存入数据库。

请参考以下示例代码：

型号：

public class SMJsonModel
{
    public string title { get; set; }
    public string type { get; set; }
    public string description { get; set; }
    public string fileName { get; set; }
    public string height { get; set; }
    public string width { get; set; }
    public string price { get; set; }
    public string rating { get; set; }
}
public class PropertyInfoK360
{
    public string Value { get; set; }
    public string Key { get; set; }
}

控制器：

public class SupermarketController : Controller
{
    public IActionResult Index()
    {
        //initial data:
        List<SMJsonModel> JsonResultList = new List<SMJsonModel>()
        {
            new SMJsonModel(){
                title="Brown eggs",
                type="dairy",
                description="Raw organic brown eggs in a basket",
                fileName="0.jpg",
                height = "600",
                width="400",
                price="28.1",
                rating="4"
            }
        };
        ViewData["K360DbPropVD"] = new List<PropertyInfoK360>()
        {
            new PropertyInfoK360(){ Value="AAA", Key="AAA"},
             new PropertyInfoK360(){ Value="BBB", Key="BBB"},
              new PropertyInfoK360(){ Value="CCC", Key="CCC"},
               new PropertyInfoK360(){ Value="DDD", Key="DDD"},
                new PropertyInfoK360(){ Value="EEE", Key="EEE"},
                 new PropertyInfoK360(){ Value="FFF", Key="FFF"},
                  new PropertyInfoK360(){ Value="GGG", Key="GGG"},
        };
        return View(JsonResultList);
    }
    // this method is used to insert data into database.
    [HttpPost]
    public IActionResult Insert(SMJsonModel jsonModel)
    {
        //insert object into database.

        return Ok("success");
    }
}

索引视图页面：

@model IEnumerable<netcore5.Models.SMJsonModel> 
<div class="container">
    <table class="table table-striped table-bordered" id="tb_properties" style="width:100%">
        <thead>
        </thead>
        <tbody>
            <tr>
                @foreach (var property in Model.GetType().GetGenericArguments()[0].GetProperties())
                {
                    <td>
                        <input type="text" value="@property.Name" class="form-control" />
                        @{var K360list = new SelectList((System.Collections.IEnumerable)ViewData["K360DbPropVD"], "Value", "Key");}
                        <select asp-items="K360list" class="form-control"></select>

                    </td>
                }
            </tr>
        </tbody>
    </table>
</div>
<div class="container">
    <table class="table table-striped table-bordered" style="width:100%">
        <tr>
            <td align="center">
                <button type="submit" class="btn btn-primary">Catalog Mapping</button>
            </td>
        </tr>
    </table>
</div>

@section scripts{
<script>
    $(function () {
        $("button[type='submit']").click(function () {
            event.preventDefault();
            var properties = []; //define an array to store the property name and the selected value.
            $("#tb_properties tr:first").find("td").each(function (index, item) {
                var propertyname = $(item).find("input[type='text']").val();
                var selctedvalue = $(item).find("select").val(); 
                properties.push('"' + propertyname + '":"' + selctedvalue + '"');
            }); 
            //According the properties to genereate the json string.
            var jsonstr = '{' + properties.join(",") + '}';
            //convert the json string to js object.
            var jsobject = JSON.parse(jsonstr);
            //call the Inset method and store data into the database.
            $.ajax({
                type: "Post",
                url: "/Supermarket/Insert",
                data: { jsonModel: jsobject },
                success: function (response) {
                    console.log(response); 

                },
                error: function (xhr, textStatus, errorThrown) {
                    console.log('in error');
                }
            });
        });
    });
</script>
}

截图如下：

更新

如评论中所述，要将JsModel的属性名称存储为K360ECommerceS中的第一列并将其值存储为第二列的值table，您可以参考以下代码：

    [HttpPost]
    public IActionResult Insert(SMJsonModel jsonModel)
    {
        //insert object into database.
        //required using System.Reflection; 
        //use GetType() and GetProperties() method to get object's property name and its value.
        Type type = jsonModel.GetType();
        PropertyInfo[] props = type.GetProperties();

        List<K360Master> k360Masters = new List<K360Master>(); 
        foreach(var item in props)
        {
            K360Master master = new K360Master()
            {
                ClientCatalog = item.Name,
                K360catalog = item.GetValue(jsonModel, null)?.ToString()
            };
            k360Masters.Add(master);
        }
        _context.K360Master.AddRange(k360Masters);
        _context.SaveChanges();
        
        return Ok("success");
    }

之后K360Master中的结果table如下：

[注意] 在上面的示例中，我的 DBContext 如下所示，它会将数据插入 K360Master table，请检查您的代码并确保您使用了正确的实体和表。

public class ApplicationDbContext : IdentityDbContext
{
    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
        : base(options)
    {
    }

    public DbSet<K360Master> K360Master { get; set; }
}

更新

Only if we select all the 8 dropdownlist then only it gets inserted. Not able to select only 2 or 3 dropdownlist and it shows Cannot insert the value NULL into column 'K360Catalog'. Its not null column. please guide me. task needs to finished by today eod

在Insert 方法中，您可以在将它们保存到数据库之前检查值是否为空。代码如下：

    [HttpPost]
    public IActionResult Insert(SMJsonModel jsonModel)
    {
        //insert object into database.

        Type type = jsonModel.GetType();
        PropertyInfo[] props = type.GetProperties();

        List<K360Master> k360Masters = new List<K360Master>(); 
        foreach(var item in props)
        {
            //check if the value is null or not.
            if(!string.IsNullOrEmpty(item.GetValue(jsonModel, null)?.ToString()))
            {
                K360Master master = new K360Master()
                {
                    ClientCatalog = item.Name,
                    K360catalog = item.GetValue(jsonModel, null)?.ToString()
                };
                // if the value is not null, add it to the list
                k360Masters.Add(master);
            }
        }
        //insert the list items into database.
        _context.K360Master.AddRange(k360Masters);
        _context.SaveChanges();
        
        return Ok("success");
    }

截图如下：

更新

根据你的描述，如果你不想使用for each语句循环遍历8个字段，你可以尝试使用LINQ where子句来过滤数据。而且，如果您想从控制器操作方法 return 多个值到 Ajax 函数，您可以引用 Json 结果。请检查以下示例：

    [HttpPost]
    public IActionResult Insert(SMJsonModel jsonModel)
    {
        //insert object into database.

        Type type = jsonModel.GetType();
        PropertyInfo[] props = type.GetProperties();

        List<K360Master> k360Masters = new List<K360Master>(); 
        //using where clause to filter data.
        k360Masters = props.Where(c => !string.IsNullOrEmpty(c.GetValue(jsonModel, null)?.ToString()))
                                        .Select(c=> new K360Master() { ClientCatalog= c.Name,  K360catalog = c.GetValue(jsonModel, null)?.ToString() })
                                        .ToList(); 
        if(k360Masters.Count > 0)
        {
            try
            {
                //foreach (var item in props)
                //{
                //    //check if the value is null or not. if the value is not null, add it to the list
                //    if (!string.IsNullOrEmpty(item.GetValue(jsonModel, null)?.ToString()))
                //    {
                //        K360Master master = new K360Master()
                //        {
                //            ClientCatalog = item.Name,
                //            K360catalog = item.GetValue(jsonModel, null)?.ToString()
                //        };
                //        k360Masters.Add(master);
                //    }
                //}

                _context.K360Master.AddRange(k360Masters);
                _context.SaveChanges();

                return Json(new { Status = "Success", Message = "Insert Success!" }); 
            }
            catch (Exception)
            {
                return Json(new { Status = "Error", Message = "Fail to insert data into database" });
            }
        }
        else
        {
            return Json(new { Status = "Warning", Message = "No selected item" });
        }
    }

Ajax代码：

        //According the properties to genereate the json string.
        var jsonstr = '{' + properties.join(",") + '}';
        //convert the json string to js object.
        var jsobject = JSON.parse(jsonstr);
        $.ajax({
            type: "Post",
            url: "/Supermarket/Insert",
            data: { jsonModel: jsobject },
            success: function (response) {
                alert(response.status + "--" + response.message);
                //then, based on the status to choose 
            },
            error: function (xhr, textStatus, errorThrown) {
                console.log('in error');
            }
        });

结果是这样的：

Answer 2

问题现已解决。

在部分视图中为 table 提供了 ID。

并在Jquery成功函数中添加了一段代码

$("#par_tbl").load(window.location.href + "#par_tbl");

Jquery/Ajax 更新 TABLE[ASP.NET 核心 MVC]

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asp.net-core