/**
* Show the form for editing the specified article.
*
* @param $slug
* @return \Illuminate\Http\Response
*/
public function edit($slug)
{
/*
* --------------------------------------------------------------------------
* Show edit form
* --------------------------------------------------------------------------
* Populate category into list for build drop down, and try catch old
* subcategory input because it depends on category, by default subcategory
* should be exist on edit because all article should have it.
*/
$article = Article::whereSlug($slug)->firstOrFail();
$categories = Category::pluck('category', 'id');
$subcategories = null;
if (Input::old('category', '') != '') {
$subcategories = Category::findOrFail(Input::old('category'))->subcategories;
} else {
$subcategories = Subcategory::whereCategoryId($article->subcategory->category->id)->get();
}
return view('contributor.article_edit', compact('article', 'categories', 'subcategories'));
}