Laravel Ajax cannot update database when click on a link - ajax

Question

I have an audio file on public folder like this-
#foreach ($songs as $song)
<a href="{{asset('/audio/' . $song->song)}}" download="" >
<button type="button" class="download" style="margin-bottom: 15px;">
<i class="glyphicon glyphicon-download">Download</i>
</button>
</a>
#endforeach
So, when i click that button it downloads the song. In my database, in "song" table there is column for song and another one for download_count which is set to default(0). I try to update download_count when i click on the link by ajax. My ajax:
$(function() {
$('.download').click(function(){
$.ajax({
url: "/update_download_count",
type:"POST",
data: {
song_id:$(this).attr('data-id')
}
});
});
});
My Route:
Route::post('/update_download_count', 'PagesController#updateDownloadCount');
Controller:
public function updateDownloadCount(){
$song_id = $_POST['song_id'];
$song->download += 1;
$song->save();
}
But, i cannot update my database however i click on the link. it still set to 0 in download_count column. Plz help, what's the wrong?

Answer 1

You don't actually select the song.
public function updateDownloadCount(Request $request) {
$song = Song::find($request->input("song_id"));
$song->download += 1;
$song->save();
}

Answer 2

Please declare object for your song modal.
public function updateDownloadCount() {
$song = Song::findOrFail($_POST['song_id']);
$song->download += 1;
$song->save();
}

Answer 3

public function updateDownloadCount(Request $request){
\DB::table('songs')->where('songs_id', $request->input("song_id"))->increment('download');
}

Answer 4

Instead of
$song->download += 1;
Try:
Song::find($request->input("song_id"))->increment('download');
I think that should work