Question

我在类别类中具有以下功能：

...
    /**
     * Get the children of current category.
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function children()
    {
        return $this->hasMany(Category::class, 'parent_id');
    }

    /**
     * Get the nested children of current category.
     *
     * @return @return \Illuminate\Database\Eloquent\Builder
     */
    public function childrenRecursive()
    {
        return $this->children()->with('childrenRecursive');
    }

    /**
     * Get the category that depends with the given group name.
     *
     * @param string $group
     * @return \Illuminate\Database\Eloquent\Collection|null
     */
    public static function getTheCategory($group)
    {
        $root = Category::where('group', $group)->whereNull('parent_id')->first();
        return $root ? $root->childrenRecursive()->get() : null;
    }

   ...

当我调用getTheCategory函数时，会得到以下结果：

[
    {
        "id": 2,
        "title": "Agricultural",
        "concise": "The category for agricultural products.",
        "created_at": "2019-12-17 18:01:05",
        "updated_at": "2019-12-17 18:01:05",
        "children_recursive": []
    },
    {
        "id": 3,
        "title": "Animal",
        "concise": "The category for animal products.",
        "created_at": "2019-12-17 18:01:05",
        "updated_at": "2019-12-17 18:01:05",
        "children_recursive": []
    },
    {
        "id": 4,
        "title": "Handicrafts",
        "concise": "The category for handicrafts products.",
        "created_at": "2019-12-17 18:01:05",
        "updated_at": "2019-12-17 18:01:05",
        "children_recursive": []
    }
]

现在，如何将children_recursive更改为children？我想要这样的结果：

[
  {
   "id": 2,
   "title": "Agricultural",
   "concise": "The category for agricultural products.",
   "created_at": "2019-12-17 18:01:05",
   "updated_at": "2019-12-17 18:01:05",
    "children": []
    },
  ...
]

Answer 1

您应该使用laravel的访问器和别名来执行此操作。在此处https://laravel.com/docs/5.7/eloquent-mutators#defining-an-accessor中查看减损。

如何在后续选择中更改键名

1 个答案: