无限极分类

Posted 2022-12-22 fenle

 

class CategoryController extends Controller

    public function index()
    
        $rootCats = Category::where(‘parent_id‘, null)->get();
        return $this->tree($rootCats);
    

    private function tree($cats) 
        $tree = [];
        foreach ($cats as $cat) 
            $childrenCats = Category::where(‘parent_id‘, $cat->id)->get();
            if ($childrenCats->isNotEmpty()) 
                $cat->children = $this->tree($childrenCats);
            
            $tree[] = $cat;
        
        return $tree;