Laravel 8, how to pass form values to Route - php

Question

I am doing roles&permissions, an action that admin can change user to staff. I am able to send id to editRolePermission function, but the role value.
function editRolePermission($id, "role value here")
{
$row = DB::table('users')
->where('id',$id)
->limit(1)
->update(array('role' => ''));
return redirect()->back();
}
<form action="{{ route('updateRolePermission', $user->id) }}" method="POST">
#method('PATCH')
#csrf
<select name="roles">
<option name ="user" value="user">User</option>
<option name= "staff" value="staff">Staff</option>
</select>
<input type="submit" onchange="this.form.submit()">
</form>
Route::patch('edit-role-permission/{id}', [AdminController::class, 'editRolePermission'])->name('updateRolePermission');

Answer 1

The following should do what you want. Here is the route - notice I have swapped {id} for {user} - this is the ID of the user we need to edit the role for:
Route::post("/edit-role-permission/{user}", [AdminController::class, "editRolePermission"]);
How to implement the route in your form:
#if(session()->has("message"))
{{ session("message") }}
#endif
<form action="/edit-role-permission/{{ $user->id }}" method="POST">
#csrf
<select name="roles">
<!-- ... options ... -->
</select>
<!-- submit button -->
</form>
Thanks to Laravel magic, passing the user ID as the second parameter allows us to access the user model so we can update the user easily, with a lot less code. We can use the request to get any posted values, in this instance $request->roles refers to the input named roles:
public function editRolePermission(Request $request, \App\Models\User $user)
{
$user->update(["role" => $request->roles]);
$user->save();
return redirect()->back()->with("message", "User role updated successfully");
}