Tzi*_*Tzi 3 cakephp save associations has-and-belongs-to-many cakephp-3.x
在 cakePHP 3.4 上，我有 3 个表，其中一个属于并且有很多关系：成分、产品和成分产品：
class IngredientsTable extends Table
{
public function initialize(array $config)
{
// Use through option because it looks like you
// have additional data on your IngredientsProducts table
$this->belongsToMany('Products', [
'through' => 'IngredientsProducts',
]);
}
}
class ProductsTable extends Table
{
public function initialize(array $config)
{
$this->belongsToMany('Ingredients', [
'through' => 'IngredientsProducts',
]);
}
}
class IngredientsProductsTable extends Table
{
public function initialize(array $config)
{
$this->belongsTo('Ingredients');
$this->belongsTo('Products');
}
}
我想要完成的是，当我插入一个新产品时，我还想插入与该产品相关的每种成分的成分 ID 和字段数量，在成分产品连接表上。
我一直在阅读食谱，看到在 joiner 表上保存附加数据时（在我的情况下，字段 qty 如下所述），您必须使用 _joinData 属性，因此我的添加视图如下所示：
<?php
$this->Form->create($product);
// fields of the Products table
echo $this->Form->control('name',array('class' => 'form-control'));
echo $this->Form->control('retail_price');
echo $this->Form->control('best_before');
echo $this->Form->control('comments');
// ingredient_id and qty fields of the ingredients_products table
echo $this->Form->control('ingredients.0._joinData.ingredient_id',['options' => $ingredients);
echo $this->Form->control('ingredients.0._joinData.qty');
//and repetition of these last two as ingredients.1._joinData to ingredients.N._joinData
$this->Form->button(__('Save'));
$this->Form->end();
?>
在控制器上，add 方法如下所示：
$product = $this->Products->newEntity();
if ($this->request->is('post')) {
$product = $this->Products->patchEntity($product, $this->request->getData(),[
'associated' => ['Ingredients._joinData']
]);
if ($this->Products->save($product)) {
$this->Flash->success(__('The product has been saved.'));
return $this->redirect(['action' => 'index']);
}
$this->Flash->error(__('The product could not be saved. Please, try again.'));
}
$this->set(compact('product'));
$this->set('_serialize', ['product']);
但是，当我提交时，它不会保存任何内容。调试显示以下正在发布：
object(App\Model\Entity\Product) {
'name' => 'salada',
'retail_price' => (float) 23,
'best_before' => (int) 234,
'comments' => 'wer',
'directions' => 'werwewerer',
'ingredients' => [
(int) 0 => object(App\Model\Entity\Ingredient) {
'_joinData' => object(Cake\ORM\Entity) {
'ingredient_id' => (int) 4,
'qty' => (float) 100,
'[new]' => true,
'[accessible]' => [
'*' => true
],
'[dirty]' => [
'ingredient_id' => true,
'qty' => true
],
'[original]' => [],
'[virtual]' => [],
'[errors]' => [],
'[invalid]' => [],
'[repository]' => 'IngredientsProducts'
},
'[new]' => true,
'[accessible]' => [
'*' => true,
'id' => false
],
'[dirty]' => [
'_joinData' => true
],
'[original]' => [
'_joinData' => [
'ingredient_id' => '4',
'qty' => '100'
]
],
'[virtual]' => [],
'[errors]' => [
'name' => [
'_required' => 'This field is required'
]
],
'[invalid]' => [],
'[repository]' => 'Ingredients'
},
(int) 1 => object(App\Model\Entity\Ingredient) {
'_joinData' => object(Cake\ORM\Entity) {
'ingredient_id' => (int) 5,
'qty' => (float) 200,
'[new]' => true,
'[accessible]' => [
'*' => true
],
'[dirty]' => [
'ingredient_id' => true,
'qty' => true
],
'[original]' => [],
'[virtual]' => [],
'[errors]' => [],
'[invalid]' => [],
'[repository]' => 'IngredientsProducts'
},
'[new]' => true,
'[accessible]' => [
'*' => true,
'id' => false
],
'[dirty]' => [
'_joinData' => true
],
'[original]' => [
'_joinData' => [
'ingredient_id' => '5',
'qty' => '200'
]
],
'[virtual]' => [],
'[errors]' => [
'name' => [
'_required' => 'This field is required'
]
],
'[invalid]' => [],
'[repository]' => 'Ingredients'
}
],
'[new]' => true,
'[accessible]' => [
'*' => true,
'id' => false
],
'[dirty]' => [
'name' => true,
'retail_price' => true,
'best_before' => true,
'comments' => true,
'directions' => true,
'ingredients' => true
],
'[original]' => [],
'[virtual]' => [],
'[errors]' => [],
'[invalid]' => [],
'[repository]' => 'Products'
}
有没有人碰巧知道如何使这项工作？
以防万一这里是 mySQL 上的表结构：
TABLE `Ingredients` (
`id` int(11) NOT NULL,
`name` varchar(255) NOT NULL,
`category_id` int(11) NOT NULL,
`measure_id` int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Table products
TABLE `Products` (
`id` int(11) NOT NULL,
`name` varchar(255) NOT NULL,
`retail_price` float NOT NULL,
`best_before` int(11) NOT NULL,
`comments` text NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
TABLE `ingredients_products` (
`ingredient_id` int(11) NOT NULL,
`product_id` int(11) NOT NULL,
`qty` double NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
任何帮助或指示将不胜感激！谢谢
errors信息每当保存实体不起作用时，请检查errors信息：
'[errors]' => [
'name' => [
'_required' => 'This field is required'
]
],
您的验证规则Ingredients.name根据需要定义该字段，但它不存在于您的表单中，因此保存失败。
仔细查看文档中保存连接数据的示例，数据结构看起来与您的略有不同。
从你的使用ingredient_id我怀疑你想增加产品链接到现有的成分，将ingredient_id在_joinData不过是不是这个是如何工作的。编辑/链接现有记录要求记录的主键出现在特殊_ids键中或目标关联的主键字段中 ( Ingredients)。
因此，在您想要存储其他连接数据的情况下，您必须使用id该成分的属性，这样编组器就知道它需要加载现有记录：
echo $this->Form->control('ingredients.0.id', [
// defining the type is required, as the input type
// guessing only recognizes `_ids` fields, or fields
// with `_id` appended as possible select types
'type' => 'select'
'options' => $ingredients
]);
echo $this->Form->control('ingredients.0._joinData.qty');