asp.net - Update db from input and button inside a table - asp.net

Question

I know this seems stupid but I can't find a way to make it work...
I generate a table from a db with this loop (simplified)
#foreach (var item in Model.Approvals)
{
<tr>
<td>#item.ApprovalReviewer</td>
.
.
.
.
<td>
<button asp-action="Approve" asp-route-id="#item.Key" asp-controller="Dashboard">Approve
</button>
</td>
<td><input asp-for="Approval.ChangeReviewer" value="#item.ChangeReviewer"/></td>
}
it looks like this, I can add a row and delete one, no issue there everything is working
so basically you enter a name in the reviewer input and when you press approve then that name is updated for the correct key. The issue I have is that I can't find a way to bind that input to the button.
[HttpPost]
public IActionResult Approve(int? key, Global obj)
{
var objToApprove = _db.ApprovalTable.Find(key);
objToApprove.ChangeApproved = true;
objToApprove.ChangeApprovalDate = DateTime.Now;
objToApprove.ChangeReviewer = obj.Approval.ChangeReviewer;
objToApprove.ChangeSigned = obj.Approval.ChangeReviewer;
_db.ApprovalTable.Update(objToApprove);
_db.SaveChanges();
return Redirect(Url.Action("ECR", new { id = obj.Approval.ECRNumber }) + "#2"); //TAB #2 FORM APPROVAL
}
what I need is the value of the input on the same row as the button... sounds easy...I guess not for me..

Answer 1

I don't know if this is the right way of doing it but I was able to solve my problem like this:
I replaced the Foreach loop to a regular loop so that each control would have its own index. Then I passed to the controller the index i so I could get the correct value in the controller.
So it looks like this:
#for (int i = 0; i < Model.Approvals.Count() - 1; i++)
{
The button where I pass the index i to the controller
<button class="---" asp-action="Approve" asp-route-key="#Model.Approvals[i].Key" asp-route-index="#i" asp-route-ecr="#Model.Approvals[i].ECRNumber" asp-controller="Dashboard">Approve</button>
and finally the controller where I can retrieve the variable
[HttpPost]
public IActionResult Approve(int? key, Global obj, int? ecr, int index)
{
var objToApprove = _db.ApprovalTable.Find(key);
objToApprove.ChangeApproved = true;
objToApprove.ChangeApprovalDate = DateTime.Now;
objToApprove.ChangeReviewer = obj.Approvals[index].ChangeReviewer;
objToApprove.ChangeSigned = obj.Approvals[index].ChangeReviewer;
_db.ApprovalTable.Update(objToApprove);
_db.SaveChanges();
return Redirect(Url.Action("ECR", new { id = ecr }) + "#2");
}
I have 2 weeks of experience in asp.net so it is hard to know if there is a much better and elegant way of doing this but it works. So it seems that after all I was not there for a "code writing service"...