如何在CakePHP 3.0中顯示檢索到的數據？

Question

我已經使用了CakePHP 2.0很長一段時間了，我正試圖遷移到3.0。大部分情況都很好，但是我非常困惑於如何從表格中檢索數據並將其顯示在視圖中。

假設我的數據庫包含菜單和菜單項。每個菜單可以有多個菜單項（每個菜單項記錄都有菜單項ID）。

所以，CakePHP的2.0我將不得不如下：

Model: 
Menu hasMany Menuitem 

Controller: 
$this->set->recursive = 1; 
$menu = $this->Menu->findById($menuid); 

View: 
foreach($menu['Menuitem'] as $item) { 
... display item ... 
} 

餅3.0我試圖複製此。所以，我有：

In Model/Table/MenusTable.php: 
    public function initialize(array $config) 
    { 
     $this->hasMany('Menuitems', [ 
         'sort' => ['Menuitems.order' => 'ASC'] 
     ]); 
    } 

In Controller: 
$menus= TableRegistry::get('Menus'); 
$query = $menus->find('all') 
        ->contain(['Menuitems'); 
$menulist= $query->toArray(); 
$this->set(compact('menulist')); 

我現在該如何在視圖中顯示？

如果我嘗試：

foreach($menu['Menuitem'] as $item) 

然後我得到的錯誤 「未定義指數：菜單項」。

然後我嘗試了$ menu.menuitems和$ menu-> menuitems，但那些都不起作用。我哪裏錯了？謝謝！

編輯：對不起消失了幾天。如果我做調試（$ menulist）;我得到如下：

(int) 0 => object(Cake\ORM\Entity) { 
    'id' => (int) 1, 
    'name' => 'Main', 
    'menuitems' => [ 
     (int) 0 => object(Cake\ORM\Entity) { 

      'id' => (int) 1, 
      'subsite_id' => (int) 1, 
      'page_id' => (int) 1, 
      'parentmenuitem_id' => null, 
      'nav_order' => (int) 1, 
      'nav_width' => null, 
      'children' => [], 
      '[new]' => false, 
      '[accessible]' => [ 
       '*' => true 
      ], 
      '[dirty]' => [], 
      '[original]' => [], 
      '[virtual]' => [], 
      '[errors]' => [], 
      '[invalid]' => [], 
      '[repository]' => 'Menuitems' 

     }, 
     (int) 1 => object(Cake\ORM\Entity) { 

      'id' => (int) 2, 
      'subsite_id' => (int) 1, 
      'page_id' => (int) 2, 
      'parentmenuitem_id' => null, 
      'nav_order' => (int) 2, 
      'nav_width' => null, 
      'children' => [ 
       (int) 0 => object(Cake\ORM\Entity) { 

        'id' => (int) 9, 
        'subsite_id' => (int) 1, 
        'page_id' => (int) 9, 
        'parentmenuitem_id' => (int) 2, 
        'nav_order' => (int) 1, 
        'nav_width' => null, 
        '[new]' => false, 
        '[accessible]' => [ 
         '*' => true 
        ], 
        '[dirty]' => [], 
        '[original]' => [], 
        '[virtual]' => [], 
        '[errors]' => [], 
        '[invalid]' => [], 
        '[repository]' => 'Children' 

       }, 
       (int) 1 => object(Cake\ORM\Entity) { 

        'id' => (int) 10, 
        'subsite_id' => (int) 1, 
        'page_id' => (int) 13, 
        'parentmenuitem_id' => (int) 2, 
        'nav_order' => (int) 2, 
        'nav_width' => null, 
        '[new]' => false, 
        '[accessible]' => [ 
         '*' => true 
        ], 
        '[dirty]' => [], 
        '[original]' => [], 
        '[virtual]' => [], 
        '[errors]' => [], 
        '[invalid]' => [], 
        '[repository]' => 'Children' 

       }, 
       (int) 2 => object(Cake\ORM\Entity) { 

        'id' => (int) 11, 
        'subsite_id' => (int) 1, 
        'page_id' => (int) 14, 
        'parentmenuitem_id' => (int) 2, 
        'nav_order' => (int) 3, 
        'nav_width' => null, 
        '[new]' => false, 
        '[accessible]' => [ 
         '*' => true 
        ], 
        '[dirty]' => [], 
        '[original]' => [], 
        '[virtual]' => [], 
        '[errors]' => [], 
        '[invalid]' => [], 
        '[repository]' => 'Children' 

       } 
      ], 
      '[new]' => false, 
      '[accessible]' => [ 
       '*' => true 
      ], 
      '[dirty]' => [], 
      '[original]' => [], 
      '[virtual]' => [], 
      '[errors]' => [], 
      '[invalid]' => [], 
      '[repository]' => 'Menuitems' 

     }, 
    ], 
    '[new]' => false, 
    '[accessible]' => [ 
     '*' => true 
    ], 
    '[dirty]' => [], 
    '[original]' => [], 
    '[virtual]' => [], 
    '[errors]' => [], 
    '[invalid]' => [], 
    '[repository]' => 'Subsites' 

} 

]

Answer 1

在什麼（ '菜單列表'）變量的基礎上已設置，您的foreach應該是這樣的：

foreach($menulist->Menuitems as $item) 
{ 
    // your logic here 
} 

只需調試設置變量並查看數據是如何到來的，有時根據您的查詢可能會有所不同。

Answer 2

您返回的數據是什麼樣的？您應該使用debug($menulist)檢查變量，或者查看debugkit中的設置視圖變量。在CakePHP 3中包含的模型應該在您的數據中顯示爲一個小寫的蛇套管項目（不像CakePHP 2中的模型別名），並且作爲hasMany關聯的複數形式，所以我希望您的案例可以像這樣： -

foreach ($menulist['menuitems'] as $item): 
    // Output your menu item 
endforeach;