我正在嘗試獲取子類別的類別樹假設(shè)我有一個(gè)名為“配件”的子類別這個(gè)子類別有電子 > 筆記本電腦的父母所以它是電子產(chǎn)品 > 筆記本電腦 > 配件表：-----------------------------------------| id | parent_id | name ||---- |----------- |------------- || 1 | 0 | Electronics || 2 | 1 | Laptops || 3 | 2 | Accessories |-----------------------------------------我可以獲得子類別的根類別，例如：function getTopParent($category) { if($category->parent_id === null) { return $category->name; } return getTopParent(App\Category::find($category->parent_id)); // Will return Electronics}我也知道如何顯示樹等類別，請(qǐng)參見此處function printCategoryName($categories, $parentName = '') { foreach ($categories as $category) { $name = $parentName ? implode(' > ', [$parentName, $category->name]) : $category->name; echo sprintf('%s%s', $name, PHP_EOL); if (count($category->children) > 0) { printCategoryName($category->children, $name); } }}printCategoryName($categories);我需要的是給一個(gè)像附件這樣的類別并獲取樹并獲取該子類別的類別樹：電子產(chǎn)品 > 筆記本電腦 > 配件。我怎樣才能做到這一點(diǎn)？
4 回答
桃花長相依
TA貢獻(xiàn)1860條經(jīng)驗(yàn) 獲得超8個(gè)贊
protected function getCategoriesTree()
{
$categories = Category::where('parent_id',0)->get();
if($categories->count())
{
foreach ($categories as $category)
{
$categories_tree[$category->id] = $this->getChildCategories($category);
}
}
return response()->json(['categories' => $categories_tree]);
}
private function getChildCategories($category)
{
$sub_categories = [];
$childs = Category::where('parent_id', $category->id)->get();
$sub_categories = $category;
$sub_categories['sub_categories'] = [];
if($childs->count())
{
$sub_categories['sub_categories'] = $childs;
}
return $sub_categories;
}
慕桂英546537
TA貢獻(xiàn)1848條經(jīng)驗(yàn) 獲得超10個(gè)贊
這就是我讓它工作的方式：
function getParentsTree($category, $name)
{
if ($category->parent_id == null)
{
return $name;
}
$parent = Category::find($category->parent_id);
$name = $parent->name . ' > ' . $name;
return getParentsTree($parent, $name);
}
$cat = Category::find(1);
echo getParentsTree($cat, $cat->name);
輸出 ：Electronics > Laptops > Accessories
大話西游666
TA貢獻(xiàn)1817條經(jīng)驗(yàn) 獲得超14個(gè)贊
紅顏莎娜
TA貢獻(xiàn)1842條經(jīng)驗(yàn) 獲得超13個(gè)贊
我正在使用這種結(jié)構(gòu)
您的輸入類別模型App\Category.php
class Categories extends Model
{
public function parent()
{
return $this->hasOne('App\Category', 'parent_id','id');
}
public function childiren()
{
return $this->hasMany('App\Category', 'id','parent_id');
}
}
你的控制器ExampleController.php
public function example()
{
$data = Category::all();
return view('index', compact('data'));
}
你的刀片index.blade.php
<select>
@foreach($data as $categories)
<optgroup label="{{ $categories->name }}">
@foreach($categories->children as $category)
<option value="{{ $category->id }}">{{ $category->name }}</option>
@endforeach
</optgroup>
@endforeach
</select>
你也使用jquery select 2
- 4 回答
- 0 關(guān)注
- 159 瀏覽
添加回答
舉報(bào)
0/150
提交
取消