/**
  * Show the form for editing the specified resource.
  *
  * @param  int  $id
  * @return \Illuminate\Http\Response
  */
 public function edit($slug)
 {
     $transformers = $this->transformer->whereSlug($slug)->first();
     is_null($transformers) ? $transformers = Transformer::create(['slug' => $slug]) : '';
     return view('transformers.edit', compact('transformers'));
 }