Coffee shop is created with ASP.NET Core Razor page. Coffee Model created and all available coffee is stored in a db (ef core). We have two pages. First page shows a table of all coffee (id, title, cost, ...)info. Each coffee has an Edit "button".

<tbody>
        @foreach (var item in Model._coffeeItems)
        {....
                <td>
                    @item.Price &euro; 
                </td>

                <td>
                    <a asp-action= "GetCoffeeItem" >Edit</a> 
                    <a asp-action="RemoveCoffeeItem" >Delete</a>
                </td> ...

When clicked should be redirected to an Edit page with a form. All fields must be filled with coffee information for easier edit.

In First page CoffeeItemProvider.cs:

public async Task<FoodItem> GetCoffeeItem(int id)
        {
            var item = await _db.CoffeeItems
            .FirstOrDefaultAsync(i => i.Id == id);

            return item;
        }
public async Task UpdateCoffeeItem(int id, CoffeeItem item)
        {
            _db.CoffeeItems.Update(item);
            await _db.SaveChangesAsync();
        }

And in the Edit page:

<form asp-action="UpdateCoffeeItem">
    <div asp-validation-summary="ModelOnly" class="text-danger"></div>
    <input type="hidden" asp-for="Id" />
    <div class="form-group">
        <label asp-for="Name" class="control-label"></label>
        <input asp-for="Name" class="form-control"  value = ""/>
        <span asp-validation-for="Name" class="text-danger"></span>
    </div>

How can I fill in the input f.ex. Name with value = "@item.Name"?

Is there any way to make GetCoffeeItem to take in id from First page item when clicked - call GetCoffeeItem- get item - and then redirect to /Edit page with item and assign value = "@item.Smth"?

CodePudding user response：

How about:

...
<td>
    <a asp-action="GetCoffeeItem" asp-route-id="@item.Id">Edit</a>
    <a asp-action="RemoveCoffeeItem" asp-route-id="@item.Id">Delete</a>
</td>
...

and in GetCoffeeItem return the Edit view instead, e.g.:

return View("Edit", coffeeModel);

CodePudding user response：

I ended up creating an EditModel for /Edit page. redoing a bit @balinta answer.

<a asp-page="./Edit" asp-route-id="@item.Id">Edit</a>


                        <button class="btn btn-primary" type="submit" asp-page-handler="delete"
                        asp-route-id="@item.Id">Delete
                        </button>

And in the Edit.cshtml.cs :

Just added @page "{id:int?}" on the top. and implemented

public async Task<IActionResult> OnGetAsync(int id)  function.