如何在Cakephp3複合主鍵中插入帶空值的記錄？

我的received_po_details表有3個主鍵received_po_id，product_id，product_serial。有時product_serial具有價值，有時什麼也沒有如何在Cakephp3複合主鍵中插入帶空值的記錄？

cakephp3是不是讓我插入記錄如果product_serial是空

錯誤

無法插入行，一些主鍵值都失蹤。有（12，1，），希望（received_po_id，PRODUCT_ID，product_serial）

SQL表

CREATE TABLE IF NOT EXISTS `received_po_details` (
    `received_po_id` int(11) NOT NULL, 
    `product_id` int(11) NOT NULL, 
    `quantity_received` int(11) NOT NULL, 
    `product_serial` varchar(255), 
    PRIMARY KEY (received_po_id, product_id, product_serial), 
    FOREIGN KEY received_po_key (received_po_id) REFERENCES received_pos(id), 
    FOREIGN KEY product_key (product_id) REFERENCES products(id), 
    UNIQUE KEY received_po_detail_key (received_po_id, product_id, product_serial) 
);

注意product_serial只是一個值。它不是一個外鍵

實體 - receivedPoDetail.php

protected $_accessible = [ 
    '*' => true, 
    'received_po_id' => true, 
    'product_id' => true, 
    'product_serial' => true, 
];

控制器

$receivedPo = $this->ReceivedPos->patchEntity($receivedPo, $this->request->data);

請求數據打印

Array 
(
    [purchase_order_id] => 1 
    [depot_id] => 1 
    [prepared_by_id] => 
    [approved_by_id] => 
    [date_registration] => Array 
     (
      [year] => 2016 
      [month] => 05 
      [day] => 20 
      [hour] => 03 
      [minute] => 45 
     ) 

    [comment] => 
    [received_po_status_id] => 2 
    [received_po_details] => Array 
     (
      [0] => Array 
       (
        [product_id] => 1 
        [quantity_received] => 100 
        [product_serial] => 
       ) 

      [1] => Array 
       (
        [product_id] => 2 
        [quantity_received] => 1 
        [product_serial] => random_serial_here 
       ) 

      [2] => Array 
       (
        [product_id] => 3 
        [quantity_received] => 300 
        [product_serial] => 
       ) 

     ) 

)

感謝

來源

2016-05-20 Michael

它現在從$這個 - 編輯我ReceivedPoDetailsTable初始化方法的PrimaryKey工作>的PrimaryKey（[ 'received_po_id'， '的product_id'， 'product_serial' ]）; to $ this-> primaryKey（['received_po_id'，'product_id']）;和它現在的工作。還在buildRules方法中添加了$ rules-> add（$ rules-> isUnique（['received_po_id'，'product_id'，'product_serial']））。但idk，如果這是這個正確的解決方案。 – Michael

我想你要高度重視設置的product_serial到null 默認值應該是這樣..

`product_serial` varchar(255) DEFAULT NULL,

來源

2016-05-20 09:30:34

如何在Cakephp3複合主鍵中插入帶空值的記錄？

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