Question

我正在构建一个电子商务应用程序，现在正在开发ProductAttributes。我想处理尺寸和颜色以及数量属性。

示例 T恤有多种颜色和尺码，数量不同。

 Name    - Color - Size  - Qty
T-shirtA - Black - Small - 5pc
T-shirtA - Blue - Medium - 10pc
T-shirtA - Blue - Large -  4pc

我想处理他上面的情况。

表格

1. Product: Product_Id(pk), Name, Price, Description

2. ProductSizes: ProductSize_Id(pk), SizeName

3. ProductSizeValues: ProductSizeValue_Id(pk), ProductSize_Id(fk), Name

4. ProductColors: ProductColor_Id(pk), Name

5. ProductAttribues: ProductAttribute_Id(pk), ProductSize_Id(fk), ProductColor_Id(fk)

6. ProductAttribueValues: ProductAttributeValue_Id(pk), ProductAttribute_Id(fk), Product_Id(fk), ProductSizeValue_Id(fk), ProductColor_Id(fk), Quantity.

首先，我对如何将颜色和尺寸与数量存储感到困惑，然后我安装了 OpenCart 并看到了他们的数据库模式，而不是我上面的表格。

我已经将一些值直接插入到数据库中，一切正常。获得理想的结果。但显然我希望我的用户使用ViewPage存储这些细节。

我创建了 ViewModel

ProductAttributeViewModel.cs

public class ProductAttributesViewModel
{
    public Product Product { get; set; }
    public ProductAttribute ProductAttribute { get; set; }
    public ProductAttributeValue ProductAttributeValue { get; set; }
    public int ProductId { get; set; }
    public string Name { get; set; }
    [AllowHtml]
    public string Description { get; set; }
    public decimal? Price { get; set; }
    public int? Quantity { get; set; }
    public string Sizes { get; set; }
    public int Stock { get; set; }
    public int ProductColorVariantId { get; set; }
    public int ProductSizeVariantId { get; set; }
    public int ProductSizeVariantValueId { get; set; }
    public int ProductAttributeId { get; set; }
    public int ProductAttributeValueId { get; set; }
}

控制器我必须将数据插入到多个表中。所以他是我的控制者

[HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult AddProduct(ProductAttributesViewModel newRecord)
    {
IEnumerable<SelectListItem> productsizevariants = db.ProductSizeVariants.Select(c => new SelectListItem
        {
            Value = c.ProductSizeVariantId.ToString(),
            Text = c.Name

        });
        ViewBag.ProductSizeVariantId = productsizevariants;

        IEnumerable<SelectListItem> productsizevariantsvalues = db.ProductSizeVariantValues.Select(c => new SelectListItem
        {
            Value = c.ProductSizeVariantValueId.ToString(),
            Text = c.Name

        });
        ViewBag.ProductSizeVariantValueId = productsizevariantsvalues;

        IEnumerable<SelectListItem> productcolorvariantsid = db.ProductColorVariants.Select(c => new SelectListItem
        {
            Value = c.ProductColorVariantId.ToString(),
            Text = c.Name

        });
        ViewBag.ProductColorVariantId = productcolorvariantsid;

                    var product = new Product
                    {
                        Name = newRecord.Name,
                        Description = newRecord.Description,
                        Price = newRecord.Price,
                    };

                    var productattributes = new ProductAttribute
                    {
                        ProductSizeVariantId = newRecord.ProductSizeVariantId,
                        ProductColorVariantId = newRecord.ProductColorVariantId,
                        ProductId = newRecord.ProductId
                    };

                    var productattributevalues = new ProductAttributeValue
                    {
                        ProductAttributeId = newRecord.ProductAttributeId,
                        ProductId = newRecord.ProductId,
                        ProductSizeVariantId = newRecord.ProductSizeVariantId,
                        ProductSizeVariantValueId = newRecord.ProductSizeVariantValueId,
                        ProductColorVariantId = newRecord.ProductColorVariantId,
                        Quantity = newRecord.Stock
                    };

                    db.Products.Add(product);
                    db.ProductAttributes.Add(productattributes);
                    db.ProductAttributeValues.Add(productattributevalues);
                    db.SaveChanges();
                    return RedirectToAction("Index", "Home");
  }

一切都很好。数据存储在具有外键和所有值的所有表中。现在我想添加动态文本字段以添加大小和颜色。

我将颜色和大小存储在数据库和控制器中我将这些值传递到下拉列表并填充它们。

查看

@model FypStore.ViewModels.ProductAttributesViewModel

@using (Html.BeginForm("AddProduct", "Store", FormMethod.Post, new { enctype = "multipart/form-data", @class = "form-horizontal col-md-12", role = "form" }))
{
<div class="form-group">
    @Html.LabelFor(m => m.Name, new { @class = "col-md-2 control-label", data_val_required = "required" })
    <div class="col-md-10">
        @Html.TextBoxFor(m => m.Name, new { @class = "form-control" })
        @Html.ValidationMessageFor(m => m.Name)
    </div>
</div>
<div class="form-group">
    @Html.LabelFor(m => m.Description, new { @class = "col-md-2 control-label" })
    <div class="col-md-10">
        @Html.TextAreaFor(m => m.Description, new { @class = "form-control" })
    </div>
</div>
<div class="form-group">
    <div class="row">

         @*@Html.LabelFor(m => m.ProductSizeVariantId, new { @class = "col-md-2 control-label" })*@
        <div class="col-md-2 control-label">

        </div>
            <div class="input_fields_wrap">
                <button class="add_field_button">Add More Fields</button>
                <div class="col-md-2">
                    @Html.DropDownList("ProductSizeVariantId", null, "Size", new { @class = "control-label" })
                </div>
                <div class="col-md-2">
                    @Html.DropDownList("ProductSizeVariantValueId", null, "Select Size", new { @class = "control-label" })
                </div>
                <div class="col-md-2">
                    @Html.DropDownList("ProductColorVariantId", null, "Select Color", new { @class = "control-label" })
                </div>
                <div class="col-md-2">
                    @Html.TextBoxFor(x => x.Stock, new { @placeholder = "Quantity", @class = "form-control" })
                </div>
            </div>
    </div>
</div>
<div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" class="btn btn-default" value="Create Product" />
            </div>
        </div>
        }

以下是演示我想要实现的目标。

$('.multi-field-wrapper').each(function() {
    var $wrapper = $('.multi-fields', this);
    $(".add-field", $(this)).click(function(e) {
        $('.multi-field:first-child', $wrapper).clone(true).appendTo($wrapper).find('input').placeholder('quantity').focus();
    });
    $('.multi-field .remove-field', $wrapper).click(function() {
        if ($('.multi-field', $wrapper).length > 1)
            $(this).parent('.multi-field').remove();
    });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form role="form" action="/wohoo" method="POST">
  <input type="text" placeholder="Name" name="name"><br />
  <input type="text" placeholder="Price" name="price"><br />
  <input type="text" placeholder="Description" name="description"><br />
  <label>Attributes</label>
    <div class="multi-field-wrapper">
      <div class="multi-fields">
        <div class="multi-field">
        
        <select>
        <option>Green</option>
        <option>Blue</option>
        <option>Black</option>
        <option>Purple</option>
        <option>White</option>
        </select>
        <select>
        <option>XS</option>
        <option>Small</option>
        <option>Medium</option>
        <option>Large</option>
        <option>XL</option>
        </select>
          <input type="text" placeholder="quantity" name="quantity">
          <button type="button" class="remove-field">Remove</button>
        </div>
      </div>
    <button type="button" class="add-field">Add field</button>
  </div>
     <button type="button">Create Product</button>
</form>

Answer 1

如果我理解你的错误，你的视图模型中有一个属性列表。

因此，如果你想使用它，你应该把它放到列表中。

所以你应该改变你的视图模型：

//I put all properties of your list to separate model
public class AttriduteViewModel
{
    public int ProductColorVariantId { get; set; }
    public int ProductSizeVariantId { get; set; }
    public int ProductSizeVariantValueId { get; set; }
    public int ProductAttributeId { get; set; }
    public int ProductAttributeValueId { get; set; }
    public int? Quantity { get; set; }
}

public class ProductAttributesViewModel
{
    public Product Product { get; set; }
    public ProductAttribute ProductAttribute { get; set; }
    public ProductAttributeValue ProductAttributeValue { get; set; }
    public int ProductId { get; set; }
    public string Name { get; set; }
    [AllowHtml]
    public string Description { get; set; }
    public decimal? Price { get; set; }
    public string Sizes { get; set; }
    public int Stock { get; set; }
    //note this line
    public List<AttriduteViewModel> AdditionalAttridutes {get; set;}
}

基本上都是这样。现在，您应该只对AdditionalAttridutes进行正确的绑定。使用HtmlHelpers，Html.DropDownListFor，Html.HiddenFor和Html.TextBoxFor input可以更轻松地制作它。我只是在你的视图中看不到它。

问题是，如果您使用帮助程序创建name，他们将获得正确$scope.currentBaseIndex = $("div.active#base").index() + 1; $scope.currentAnteIndex = $("div.active#ante").index() + $scope.currentManoIndex = $("div.active#mano").index() + 1;属性，您的模型将在 POST 上正确绑定。

您将面临的另一件事是动态创建新项目，例如您的示例。你应该考虑正确的名称属性。我建议你检查一下这个问题this great answer。

Asp.Net MVC - 在数据库中插入多行

1 个答案: