我正在使用Steve Sanderson的BeginCollectionItem helper和ASP.NET MVC 2来模拟项目的绑定。
只要集合项的模型不包含其他集合,它就可以正常工作。
我有一个这样的模型:
- 产品
--Variants
--- IncludedAttributes
每当我渲染和模型绑定Variants集合时,它都可以正常工作。但是对于IncludedAttributes集合,我不能使用BeginCollectionItem帮助器,因为id和names值不会遵循为它的父Variant生成的id和names值:
<div class="variant">
<input type="hidden" value="bbd4fdd4-fa22-49f9-8a5e-3ff7e2942126" autocomplete="off" name="Variants.index">
<input type="hidden" value="0" name="Variants[bbd4fdd4-fa22-49f9-8a5e-3ff7e2942126].SlotAmount" id="Variants_bbd4fdd4-fa22-49f9-8a5e-3ff7e2942126__SlotAmount">
<table class="included-attributes">
<input type="hidden" value="0" name="Variants.IncludedAttributes[c5989db5-b1e1-485b-b09d-a9e50dd1d2cb].Id" id="Variants_IncludedAttributes_c5989db5-b1e1-485b-b09d-a9e50dd1d2cb__Id" class="attribute-id">
<tr>
<td>
<input type="hidden" value="0" name="Variants.IncludedAttributes[c5989db5-b1e1-485b-b09d-a9e50dd1d2cb].Id" id="Variants_IncludedAttributes_c5989db5-b1e1-485b-b09d-a9e50dd1d2cb__Id" class="attribute-id">
</td>
</tr>
</table>
</div>
如果你查看表格中第一个隐藏字段的名称,它就是Variants.IncludedAttributes - 它应该是Variants [bbd4fdd4-fa22-49f9-8a5e-3ff7e2942126] .IncludedAttributes [...] ..
这是因为当我第二次调用BeginCollectionItem时(在IncludedAttributes集合上),没有给出关于它的父Variant的项索引值的信息。
我渲染Variant的代码如下所示:
<div class="product-variant round-content-box grid_6" data-id="<%: Model.AttributeType.Id %>">
<h2><%: Model.AttributeType.AttributeTypeName %></h2>
<div class="box-content">
<% using (Html.BeginCollectionItem("Variants")) { %>
<div class="slot-amount">
<label class="inline" for="slotAmountSelectList"><%: Text.amountOfThisVariant %>:</label>
<select id="slotAmountSelectList"><option value="1">1</option><option value="2">2</option></select>
</div>
<div class="add-values">
<label class="inline" for="txtProductAttributeSearch"><%: Text.addVariantItems %>:</label>
<input type="text" id="txtProductAttributeSearch" class="product-attribute-search" /><span><%: Text.or %> <a class="select-from-list-link" href="#select-from-list" data-id="<%: Model.AttributeType.Id %>"><%: Text.selectFromList.ToLowerInvariant() %></a></span>
<div class="clear"></div>
</div>
<%: Html.HiddenFor(m=>m.SlotAmount) %>
<div class="included-attributes">
<table>
<thead>
<tr>
<th><%: Text.name %></th>
<th style="width: 80px;"><%: Text.price %></th>
<th><%: Text.shipping %></th>
<th style="width: 90px;"><%: Text.image %></th>
</tr>
</thead>
<tbody>
<% for (int i = 0; i < Model.IncludedAttributes.Count; i++) { %>
<tr><%: Html.EditorFor(m => m.IncludedAttributes[i]) %></tr>
<% } %>
</tbody>
</table>
</div>
<% } %>
</div>
</div>
用于呈现IncludedAttribute的代码:
<% using (Html.BeginCollectionItem("Variants.IncludedAttributes")) { %>
<td>
<%: Model.AttributeName %>
<%: Html.HiddenFor(m => m.Id, new { @class = "attribute-id" })%>
<%: Html.HiddenFor(m => m.ProductAttributeTypeId) %>
</td>
<td><%: Model.Price.ToCurrencyString() %></td>
<td><%: Html.DropDownListFor(m => m.RequiredShippingTypeId, AppData.GetShippingTypesSelectListItems(Model.RequiredShippingTypeId)) %></td>
<td><%: Model.ImageId %></td>
<% } %>
答案 0 :(得分:6)
当你使用MVC 2和EditorFor时,你不应该使用Steve的解决方案,我认为这只是解决MVC 1的问题。你应该能够做类似的事情:
<% for (int i = 0; i < Model.Variants.Count; i++) { %>
<%= Html.DisplayFor(m => m.Variants[i].AttributeType.AttributeTypeName) %>
<% for (int j = 0; j < Model.Variants[i].IncludedAttributes.Count; j++) { %>
<%= Html.EditorFor(m => m.Variants[i].IncludedAttributes[j]) %>
<% } %>
<% } %>
请注意,使用索引... [i] ... [j] ...很重要,MVC将如何正确地呈现Id和名称。