onetoOne问题与学说

Question

我有2个表，我想创建一个OneToOne与教条使用zend框架的关联，我的错误如下，表结构和包括控制器代码的实体代码可以在下面找到，任何想法为什么我我得到这个错误？

Fatal error: Call to undefined method Closure::getDate() in C:\htdocs\ea2\module\Easchnitstelle\view\easchnitstelle\transactions\index.phtml on line 132 

表结构

CREATE TABLE `transaction` (
    `id` int(10) unsigned NOT NULL AUTO_INCREMENT, 
    `file_id` int(10) unsigned NOT NULL, 
    `meta_data_id` int(10) unsigned NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB AUTO_INCREMENT=10386 DEFAULT CHARSET=utf8$$ 

CREATE TABLE `transaction_meta_data` (
    `id` int(10) unsigned NOT NULL AUTO_INCREMENT, 
    `meta_data_sender_id` int(10) unsigned NOT NULL, 
    `sender_account` float NOT NULL, 
    `sum_amounts` float NOT NULL, 
    `count` smallint(5) unsigned NOT NULL, 
    `date` date DEFAULT NULL, 
    `sum_bankcodes` float NOT NULL, 
    `sum_accounts` float NOT NULL, 
    `type` tinyint(3) unsigned NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB AUTO_INCREMENT=10386 DEFAULT CHARSET=utf8$$ 

这里是我的两个实体：

namespace Easchnitstelle\Entity; 

use Doctrine\ORM\Mapping as ORM; 
use Doctrine\Common\Collections\ArrayCollection; 

/** 
* Entity Class representing a Post of our Zend Framework 2 Blogging Application 
* 
* @ORM\Entity 
* @ORM\Table(name="transaction") 
* @property int $id 
* @property string $file_id 
* @property string $meta_data_id 
*/ 
class Transaction 
{ 
    /** 
    * @ORM\Id @ORM\Column(type="integer") 
    * @ORM\GeneratedValue 
    */ 
    protected $id; 

    /** @ORM\Column(type="integer") */ 
    protected $file_id; 

    /** @ORM\Column(type="integer") */ 
    protected $meta_data_id; 

    /** 
    * @ORM\OneToMany(targetEntity="TransactionData", mappedBy="transaction") 
    * @ORM\JoinColumn(name="transaction_id", referencedColumnName="id") 
    **/ 
    private $TransactionData; 

    /** 
    * @ORM\OneToOne(targetEntity="TransactionMetaData", mappedBy="transaction") 
    * @ORM\JoinColumn(name="meta_data_id", referencedColumnName="id") 
    **/ 

    private $TransactionMetaData; 

    public function __construct() { 
     $this->TransactionData = new ArrayCollection(); 
     $this->TransactionMetaData = new ArrayCollection(); 
    } 

    public function getTransactionData() { 
     return $this->TransactionData; 
    } 

    public function setTransactionData($TransactionData){ 
     $this->TransactionData = $TransactionData; 
     return $this; 
    } 

    public function getTransactionMetaData() { 
     return $this->TransactionMetaData; 
    } 

    public function setTransactionMetaData($TransactionMetaData){ 
     $this->TransactionMetaData = $TransactionMetaData; 
     return $this; 
    } 

     public function setId($id){ 
     $this->id = $id; 
     return $this; 
     } 

     public function getId(){ 
     return $this->id; 
     } 

     public function setFileId($file_id){ 
     $this->file_id = $file_id; 
     return $this; 
     } 

     public function getFileId(){ 
     return $this->file_id; 
     } 

     public function setMetaDataId($meta_data_id){ 
     $this->meta_data_id = $meta_data_id; 
     return $this; 
     } 

     public function getMetaDataId(){ 
     return $this->meta_data_id; 
     } 

}

和：

<?php 
namespace Easchnitstelle\Entity; 

use Doctrine\ORM\Mapping as ORM; 
use Doctrine\Common\Collections\ArrayCollection; 

    /** 
    * This class is somewhere in your library 
    * @ORM\Entity 
    * @ORM\Table(name="transaction_meta_data") 
    */ 

    class TransactionMetaData { 

     /** 
     * @ORM\Id @ORM\Column(type="integer") 
     * @ORM\GeneratedValue 
     */ 
     protected $id; 

     /** @ORM\Column(type="integer") */ 
     protected $meta_data_sender_id; 

     /** @ORM\Column(type="float") */ 
     protected $sum_amounts; 

     /** @ORM\Column(type="float") */ 
     protected $count; 

     /** @ORM\Column(type="date") */ 
     protected $date; 

     /** @ORM\Column(type="float") */ 
     protected $sum_bankcodes; 

     /** @ORM\Column(type="float") */ 
     protected $sum_accounts; 

     /** @ORM\Column(type="integer") */ 
     protected $type; 

     /** 
     * @ORM\OneToOne(targetEntity="Transaction", mappedBy="TransactionMetaData") 
     * @ORM\JoinColumn(name="meta_data_id", referencedColumnName="id") 
     **/ 

     protected $transaction; 

     public function setId($id){ 
      $this->id = $id; 
      return $this; 
     } 

     public function getId(){ 
      return $this->id; 
     } 

     public function getSumAmounts() { 
      return $this->sum_amounts; 
     } 

     public function setSumAmounts($sum_amounts) { 
      $this->sum_amounts = $sum_amounts; 
     } 

     public function getCount() { 
      return $this->count; 
     } 

     public function setCount($count) { 
      $this->count = $count; 
     } 

     public function getDate() { 
      return $this->date; 
     } 

     public function setDate($date) { 
      $this->date = $date; 
     } 

     public function getSumBankcodes() { 
      return $this->sum_bankcodes; 
     } 

     public function setSumBankcodes($sum_bankcodes) { 
      $this->sum_bankcodes = $sum_bankcodes; 
     } 

     public function getSumAccounts() { 
      return $this->sum_accounts; 
     } 

     public function setSumAccounts($sum_accounts) { 
      $this->sum_accounts = $sum_accounts; 
     } 

     public function getType() { 
      return $this->type; 
     } 

     public function setType($type) { 
      $this->type = $type; 
     } 

} 

下面是我的看法代码：

 foreach($Transactions as $t){ 
     $amount = ''; 
     foreach($t->getTransactionData() as $t_data){ 
      //echo $amount = $t_data->getPurposes(); 
     } 
     //die; 
     //echo get_class($t->getTransactionData()); 
     //$tm_data = $t->getTransactionMetaData(); 

     foreach($t->getTransactionMetaData() as $tm_data){ 
     //echo get_class($t->getTransactionMetaData()); 

      $date = $tm_data->getDate(); 
      echo $date; 
      die; 
     } 
     $data[] = array($amount); 
    } 

Answer 1

的关系是1：1，而不是1：N。为什么你使用关键字foreach？

当我看到你的代码，它应该只是看起来像这样：

foreach($Transactions as $transaction) { 

    $metadata = $transaction->getTransactionMetaData(); 

    echo $metadata->getDate(); 
} 

没有与getTransactionMetaData()