在Razor页面中调用操作 [英] Calling Action in Razor Pages
问题描述
作为Razor Pages的新手,我有一个关于从Razor Page调用方法的问题.
as a newbie to Razor Pages I have a question regarding calling methods from Razor Page.
我在我的域模型中定义了一个名为减法产品的方法.
I have a method called subtractProduct defined in my domain model.
在我的索引页代码中,我定义了IActionResult sellProduct,该产品在指定的ProductId上调用excludeProduct.但是我不知道如何在我的html页面上调用此方法.我尝试了很多组合,但似乎没有任何效果.有人知道如何处理吗?任何帮助,我们将不胜感激!
In my Index Page code I define IActionResult sellProduct which calls subtractProduct on specified ProductId. But I have no clue how to call this method on my html page. I've tried a lot of combinations, but nothing seems to be working. Anyone knows how to deal with this? Any help is greatly appreciated!
我的域模型是:
public class Product
{
public int ProductId { get; set; }
public int Quantity { get; set; }
...
public void SubtractProduct()
{
Quantity -= 1;
}
}
我的索引页代码为:
public class IndexModel : PageModel
{
private readonly CfEshop.Data.ApplicationDbContext _context;
public IndexModel(CfEshop.Data.ApplicationDbContext context)
{
_context = context;
}
public IList<Models.Product> Product { get;set; }
public async Task OnGetAsync()
{
Product = await _context.Products
.Include(p => p.Categories).ToListAsync();
}
public IActionResult sellProduct(int id)
{
var products = _context.Products;
_context.Products.Find(id).SubtractProduct();
return Page();
}
}
最后进入我的Razor页面:
And finaly my Razor page:
@page
@model CfEshop.Pages.Product.IndexModel
<h2>Index</h2>
<table class="table">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.Product[0].Quantity)
</th>
</tr>
</thead>
<tbody>
@foreach (var item in Model.Product)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.Quantity)
</td>
<td>
<a asp-page-handler="SellProduct" asp-route="@item.ProductId">Sell Product</a>
</td>
</tr>
}
</tbody>
</table>
推荐答案
剃刀页面具有 handler-methods
(它们是HTTP动词).因此,要从您的页面调用方法,您需要先放置 On
,然后放置所需的http动词
,然后输入方法名
.
Razor pages have handler-methods
which are HTTP verbs. So to call a method from your page you need to put On
followed by the http verb you want
then your method name
.
例如:
public IActionResult OnGetSellProduct(int id)
{
var products = _context.Products;
_context.Products.Find(id).SubtractProduct();
return Page();
}
然后在您的视图中将名称传递给 asp-page-handler
,而不带 OnPost或OnGet
前缀或 Async
后缀.
And in your view pass the name to the asp-page-handler
without the OnPost or OnGet
prefix or Async
suffix.
这是视图示例:
<a asp-page-handler="SellProduct" asp-route-id="@item.ProductId">Sell Product</a>
有关更多信息,请查看以下内容:
For more information check those out:
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