Doctrine 2 ManyToOne multipy JoinColumns - doctrine-orm

Question

I have next entities:
/**
* Customer
*
* #ORM\Table(name="customer")
* #ORM\Entity()
*/
class Customer
{
/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var Account[]|ArrayCollection
*
* #ORM\OneToMany(targetEntity="Account", mappedBy="customer")
*/
private $accounts;
/**
* #var Account
*
* #ORM\OneToOne(targetEntity="Account")
*
* #ORM\JoinColumns({
* #ORM\JoinColumn(name="id",referencedColumnName="customer_id"),
* #ORM\JoinColumn(name="default_account_id", referencedColumnName="id")
* })
*/
private $defaultAccount;
}
/**
* Account
*
* #ORM\Table(name="account")
*/
class Account
{
/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var Customer
*
* #ORM\ManyToOne(targetEntity="Customer", inversedBy="accounts")
* #ORM\JoinColumn(nullable=false)
*/
private $customer;
}
Idea that customer has multiply accounts, onr of the account should be default for customer. I would like to use foreign key with multiply fields to ensure that default customer account belongs to this customer, but I'm getting next error:
Column name `customer_id` referenced for relation from MyBundle\Entity\Customer towards MyBundle\Entity\Account does not exist.
Actually there is no "customer_id" field on ORM level, because it is "customer.id" but I dont know how to reference it.

Answer 1

It seems that line #ORM\JoinColumn(name="id",referencedColumnName="customer_id"), is redundant. Try to configure this field as following:
/**
* #var Account
*
* #ORM\OneToOne(targetEntity="Account")
*
* #ORM\JoinColumn(name="default_account_id", referencedColumnName="id")
*/
private $defaultAccount;
By the way, I think it would be better if you just added a boolean column is_default into your Account entity.