php - Dropzone js parallel upload causes problems in backend -


i'm building system, users can upload images ads. each ad can have 8 images associated. 1 of images become primary image, display in search results , on. when upload multiple images using parallel , count existing records in db, make sure limit aren't reached, things weird. because images hit server @ same time, passes check make sure, upload 8 images , uploaded suddenly. works fine, if user upload 1 image @ time.

i don't know how come along bug. best practice ?

i'm using laravel 5, in case...

thanks!

public function store(uploadadimagerequest $request, $id) {     $ad = $this->adrepo->getwithimages($id);      $this->imagerepo->hasspace($ad);      $image = $this->imagerepo->upload($request->file('image')->getrealpath(), $ad);  }


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