问题描述
我的 MVC (.NET 5) 应用程序中有一个名为“资产/索引”的视图,我在其中显示资产表中的资产列表。该页面以 IList<Asset>
为模型,即 @model IList<Asset>
。我的同行建议我为该视图制作一个 ViewModel,但在这种情况下真的需要一个 ViewModel 吗?我的意思是我看到的唯一优势是,向页面添加另一个属性(如果将来需要)很容易,因为在这种情况下我肯定需要一个 ViewModel。但是,由于该页面的唯一目的是显示资产列表(我很确定将来不需要向该假设的 ViewModel 添加属性),我很困惑是遵循我的直觉还是同行的建议。
视图:
@using AdminPortal.Models;
@model IReadOnlyList<Asset>
@{
ViewData["Title"] = "List";
}
@{ await Html.RenderPartialAsync("../Partials/SearchPartial","AssetsController"); }
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
document.getElementById('list-btn').hidden = true;
</script>
<p>
<a asp-action="Create" class="btn-link">Create New</a>
</p>
<table class="table">
<thead class="thead-light">
<tr>
<th>@Html.DisplayNameFor(model => model.First().Id)</th>
<th>@Html.DisplayNameFor(model => model.First().Address)</th>
<th>@Html.DisplayNameFor(model => model.First().State)</th>
<th>@Html.DisplayNameFor(model => model.First().Temperature)</th>
<th>@Html.DisplayNameFor(model => model.First().Moisture)</th>
<th>@Html.DisplayNameFor(model => model.First().Alerts)</th>
<th>@Html.DisplayNameFor(model => model.First().LastServiced)</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
@foreach (var asset in Model)
{
<tr>
@if (asset.State != AssetState.deleted)
{
<td>
<a asp-action="Index" asp-controller="Home"
asp-route-id="@asset.Id">@Html.DisplayFor(item => asset.Id)</a>
</td>
}
else
{
<td>
<a>@Html.DisplayFor(item => asset.Id)</a>
</td>
}
<td>@Html.DisplayFor(item => asset.Address)</td>
<td>
@if (asset.State != AssetState.deleted)
{
var IdName = "assetStateDropdown" + asset.Id;
<select class="dropdown" id="@IdName">
<option class="dropdown-item dropdown-item-text"
value="@AssetState.functional">
functional
</option>
<option class="dropdown-item dropdown-item-text"
value="@AssetState.non_functional">
non-functional
</option>
<option class="dropdown-item dropdown-item-text"
value="@AssetState.under_maintenance">
under-maintenance
</option>
</select>
<script type="text/javascript">
//change the state of the asset from the dropdown
$(function () {
$("#@IdName").change(function () {
$.ajax({
type: "POST",url: "/Assets/UpdateState",data: {
"state": $("#@IdName").val(),"id": '@asset.Id'
},success: function (response) {
alert("State Changed");
},failure: function (response) {
alert("Could not Change state");
},error: function (response) {
alert("Some error occurred. Try again later");
}
});
});
});
</script>
<script type="text/javascript">
//set the value of the asset state drop down to the current state
document.getElementById('@IdName').value = '@asset.State';
</script>
}
else
{
<p>deleted</p>
}
</td>
<td>@Html.DisplayFor(item => asset.Temperature)</td>
<td>@Html.DisplayFor(item => asset.Moisture)</td>
<td>
<a asp-action="Index" asp-controller="Alerts"
asp-route-id="@asset.Id">@Html.DisplayFor(item => asset.Alerts.Count)</a>
</td>
<td>@Html.DisplayFor(item => asset.LastServiced)</td>
@if (asset.State != AssetState.deleted)
{
<td>
<a asp-action="Delete" asp-route-id="@asset.Id" class="btn-link" style="color: darkred">Decommission</a>
</td>
}
</tr>
}
</tbody>
</table>
建议的视图模型:
public class IndexViewModel
{
public IReadOnlyList<Asset> Assets { get; set; }
}
解决方法
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