Laravel显示帖子的最新评论

// database/migrations/xxxx_xx_xx_xxxxxx_create_posts_table.php
Schema::create('posts', function (Blueprint $table) {
    $table->id();
    $table->string('title');
    $table->text('content');
    $table->timestamps();
});

// database/migrations/xxxx_xx_xx_xxxxxx_create_comments_table.php
Schema::create('comments', function (Blueprint $table) {
    $table->id();
    $table->unsignedBigInteger('post_id');
    $table->string('content');
    $table->timestamps();

    $table->foreign('post_id')->references('id')->on('posts')->onDelete('cascade');
});

// app/Models/Post.php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    public function comments()
    {
        return $this->hasMany(Comment::class);
    }
}

// app/Models/Comment.php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Comment extends Model
{
    public function post()
    {
        return $this->belongsTo(Post::class);
    }
}

// app/Http/Controllers/PostController.php
namespace App\Http\Controllers;

use App\Models\Post;
use Illuminate\Http\Request;

class PostController extends Controller
{
    public function show($id)
    {
        $post = Post::with(['comments' => function ($query) {
            $query->latest()->take(5); // 获取最新的5条评论
        }])->findOrFail($id);

        return view('posts.show', compact('post'));
    }
}

<!-- resources/views/posts/show.blade.php -->
<h1>{{ $post->title }}</h1>
<p>{{ $post->content }}</p>

<h2>最新评论</h2>
@foreach ($post->comments as $comment)
    <div>
        <p>{{ $comment->content }}</p>
        <small>{{ $comment->created_at->diffForHumans() }}</small>
    </div>
@endforeach