Laravel 资源从另一个资源返回值？答案

【问题标题】：Laravel Resource return value from another Resource?Laravel 资源从另一个资源返回值？
【发布时间】：2023-01-27 06:06:25
【问题描述】：

我试图在这里找到解决方案，但没有任何效果。我想使用 MealResource 从 TagResource 返回值，因为我有 TagTranslations 表，并且我正在从表中获取带有 TagResource 翻译的数据。

关系正确形成，膳食和标签模型通过 meal_tags 表和 tagtranslations belongsTo Tag::class 连接。

我像这样使用 TagResource：

class TagResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array|\Illuminate\Contracts\Support\Arrayable|\JsonSerializable
     */
    public function toArray($request)
    {
        $translation = $this->translations->where('tag_id', $this->id)->first();
            return 
            [
                'id' => $this->id,
                'title' => $translation->title,
                'slug' => $translation->slug,
            ];
    }
}

和 MealResource 是这样的：

public function toArray($request)
    {
        $translation = $this->translations->where('meal_id', $this->id)->first();
        $category_translation = $this->category->translations->where('category_id', $this->category->id)->first();


        return [
            'id' => $this->id,
            'title' => $translation->title,
            'decription' => $translation->description,
            'category' => [
                'id' => $this->category->id,
                'title' => $category_translation->title,
                'slug' => $category_translation->slug,
            ],
            'tags' => FILL IN THE BLANK (have used TagResource:collection() and new TagResource()) and didnt work


        ];
    }

【问题讨论】：

如果您想在 MealResource 标签中设置 Meal 模型标签，您可以通过 Meal 模型的关系发送

标签： laravel api eloquent resources eloquent-relationship

【解决方案1】：

public function toArray($request)
    {
        $translation = $this->translations->where('meal_id', $this->id)->first();
        $category_translation = $this->category->translations->where('category_id', $this->category->id)->first();

        return [
            'id' => $this->id,
            'title' => $translation->title,
            'decription' => $translation->description,
            'category' => [
                'id' => $this->category->id,
                'title' => $category_translation->title,
                'slug' => $category_translation->slug,
            ],
            'tags' => TagResource::collection($this->tags),
        ];
    }

如果所有关系命名/映射都是正确的，那么这将起作用。请确保模型分别完美映射。

【讨论】：