Deleting a record from table in Laravel - laravel

Question

I am trying to delete a record within a table using Laravel. I've tried many different things.
I have the following in my view:
#foreach($providers as $provider)
<tr>
<td>{{$provider->{'Provider First Name'} }}</td>
<td>{{$provider->{'Provider Last Name (Legal Name)'} }}</td>
<td>{{$provider->{'Provider Credential Text'} }}</td>
<td>Link </td>
<form action="/blah/{{$provider->NPI}}" method="POST">
{{ csrf_field() }}
<td><button type="submit"> Delete </button> </td>
</form>
#endforeach
I have the following in my routes:
Route::post('/blah/{id}', function($id) {
//Get user id for currently logged in user
$user = Auth::id();
//Query UserToProviderMappings table to get record where provider is mapped to user
$query = DB::table('user_to_provider_mappings')
->where('user_id', $user)
->where('provider_npi', $id)
->delete();
// $query->delete();
// return back();
});;
The view works fine. When I click delete in the view, I get redirected to a search results page and the record is not deleted in the table. I did try both post and delete in the route/form.
The search results page I am being redirected to has the following route:
Route::resource ('search-results', 'SearchResultsController');
And the following in the SearchResultsController:
public function index()
{
{
//The search() function is accessed using 'scopeSearch' within NPIData Model
$providers = NPIData::search()->orderBy('NPI')->paginate(20);
return view('inc.searchresults', compact('providers'));
}

Answer 1

You are using Query Builder not Eloquent so you are not dealing with Models, so there is no delete method to be calling on anything that could be returned. You are also calling get which returns many results not 1 result.
Since you are using Query Builder you should just replace get() with delete() to do a DELETE query to remove the record(s).
It is entirely possible you are not deleting anything at all though. You should check the result of the delete().