查看不适用于 Eloquent 关系

Question

我尝试在 Laravel 中使用 Eloquent 在两个模型之间建立关系，但在我看来，我一直收到一个错误，说它不存在。无法创建关系，因为我的视图无法识别它。这是我的代码。

类别模型

class Categories extends Model
{
    use HasFactory;

    protected $table = 'categories';
    protected $fillables = ['category'];

    public function Posts(){
        return $this->hasMany(Posts::class);
    }
}

后模型

class Posts extends Model
{
    use HasFactory;

    protected $table = 'posts';

    protected $fillables = ['title', 'body', 'image_path', 'views'];

    public function Categories(){
        return $this->belongsTo(Categories::class);
    }
}

类别迁移

class CreateCategoriesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('categories', function (Blueprint $table) {
            $table->increments('id');
            $table->string('category');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('categories');
    }
}

迁移后

class CreatePostsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::dropIfExists('posts');
        Schema::create('posts', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('user_id')->unsigned();
            $table->integer('category_id')->unsigned();
            $table->string('title');
            $table->mediumText('Body')->nullable();
            $table->string('image_path');
            $table->integer('views');
            $table->tinyInteger('published');
            $table->foreign('user_id')
                    ->references('id')
                    ->on('users')
                    ->onDelete('cascade');
            $table->foreign('category_id')
                    ->references('id')
                    ->on('categories')
                    ->onDelete('cascade');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('posts');
    }
}```


Code in My View

@foreach ($Categories->帖子为 $post) {{ $post['title'] }} @endforeach```

错误：

Answer 1

您的问题是$categories 是一个集合，所以您必须迭代每个项目然后执行->Posts：

@foreach ($Categories as $category)
    @foreach ($category->Posts as $post)
        {{ $post['title'] }}
    @endforeach
@endforeach