send an email with attachment using a form - laravel

Question

I can't understand what the problem may be:
I state that the code without the part of the attachment works
function submit(Request $request)
{
$this->validate($request, [
'email' => 'required|email',
'file' => 'mimes:pdf,doc,docx'
]);
$data = array(
'name_data' => $request->name,
'cognome_data' => $request->cognome,
'luogo_data' => $request->luogo,
'date_data' => $request->date,
'telefono_data' => $request->telefono,
'email_data' => $request->email,
'citta_data' => $request->citta,
'provincia_data' => $request->provincia,
'studio_data' => $request->studio,
'lingua_data' => $request->lingua,
'livello_data' => $request->livello,
'lingua2_data' => $request->lingua2,
'livello2_data' => $request->livello2,
'file_data' => $request->file,
'agree_data' => $request->agree
);
Mail::send('mail', $data, function($message) use ($request,$data){
$message->to('pipo#gmail.com', 'piooi')->subject('Send mail ' . $request->name);
$message->from($request->email, $request->name);
if ( isset($data['file_data']))
{
$message->attach($data['file_data']->getRealPath(), array(
'as' => $data['file_data']->getClientOriginalName(),
'mime' => $data['file_data']->getMimeType()));
}
});
Session::flash('success', 'Mail spedita con sucesso');
}
}
I put the piece of the form in question:
<form class="text-left form-email"action="#" enctype="multipart/form-data" method="POST">
<div class="input-group">
<div class="input-group-prepend">
<span class="input-group-text" id="inputGroupFileAddon01">Curriculum Vitae:</span>
</div>
<div class="custom-file">
<input type="file" class="custom-file-input" id="file" name="file"
aria-describedby="inputGroupFileAddon01">
<label class="custom-file-label" for="inputGroupFile01">Seleziona il file</label>
</div>
</div>
the error that gives the summit is the following:
local.ERROR: Call to a member function getRealPath() on null {"exception":"[object] (Error(code: 0):

Answer 1

Change your mail part to this and see if it works
Mail::send('mail', $data, function($message) use ($request,$data){
$message->to('pipo#gmail.com', 'piooi')->subject('Send mail ' . $request->name);
$message->from($request->email, $request->name);
if($request->hasFile('file')){
$message->attach($request->file->getRealPath(), array(
'as' => $request->file->getClientOriginalName(),
'mime' => $request->file->getMimeType())
);
}
});