laravel post for image and textfield

The post created is to save the image and description to the DB but only the description gets saved.The request is being done via formData()..So currently trying via postman

$post = new Post;
$post->user_id = Auth::user()->id;
$post->desc = $request->desc;

//check if post has photo
If($request->hasFile('image')){
  $imageName = time().'.'.$request->image->extension();  
  $request->image->move('storage/posts', $imageName);
  $post->photo = $imageName ;
}

//mistake
$post->save();
$post->user;
return response()->json([
  'success' => true,
  'message' => 'posted',
  'post' => $post
]);

via Chebli Mohamed