laravel-relations/app/Http/Controllers/SomeController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Input;
use App\Post;
use App\Tag;

class SomeController extends BaseController
{
    use AuthorizesRequests, DispatchesJobs, ValidatesRequests;


	public function index(){
		$result = [];

		foreach(Post::all() as $post){
			$record = ["title" => $post->title,
				"text" => $post->text,
				"id" => $post->id];
			$record['commentCount'] = $post->comments()->count();
			$record['tags'] = $post->tags;
			$result[] = $record;
		}


		return view('post_index', ['posts' => $result]);
	}

	public function create(){
		return view('form', ['allTags' => Tag::all(), 'postTags' => []]);
	}


	public function edit($id){
		$post = Post::find($id);

        $postTags = [];

        foreach($post->tags as $tag){
            $postTags[] = $tag->id;
        }





        return view('form',['post' => $post, 
                            'allTags' => Tag::all(), 
                            'postTags' => $postTags]);
	}

	public function store(Request $req){
		$newRecord = new Post([ 'title' =>Input::get('title'), 'text' =>Input::get('text')]);
		$newRecord->save();
		return redirect(route('cntrl.index'));
	}

	public function update($id){
		$post = Post::find($id);
		$post->title = Input::get('title');
		$post->text = Input::get('text');
        $tagIds = Input::get('tags');
        $post->tags()->detach();
        $post->tags()->attach($tagIds);
		$post->save();
		return redirect(route('cntrl.index'));
	}

	

	public function destroy($id){
		Post::destroy($id);
		return redirect(route('cntrl.index'));
	}

	public function show($id){
		$post = Post::find($id);
		return view('post_show', ['post' => $post, 
							"comments" => $post->comments()->orderBy('id')->get()]);
	}

}