/**
* PUT admin/posts/{post}
*
* @param Post $post
* @param PostRequest $request
* @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
*/
public function update(Post $post, PostRequest $request)
{
$post->update($request->all());
if ($request->has('tag_list')) {
$post->tags()->sync(Tag::findOrCreateMany($request->get('tag_list')));
}
flash()->success('The post has been updated');
return redirect('/admin/posts');
}