Doctrine ManyToMany relationship issues - doctrine-orm

Question

I'm trying to add Doctrine entities and relationships to my existing database schema but I'm running into some issues.
I have 4 tables:
+-------------+ +-----------+ +-----------------+ +-------------------+
| customers | | acl_roles | | acl_permissions | | acl_customer_role |
--------------- ------------- ------------------- ---------------------
| customer_id | | id | | role_id | | customer_id |
+-------------+ | name | | resource_id | | acl_role_id |
+------------ | flags | +--------------------
+------------------
In my ACL customers can have many roles and each role can have many permissions. The mapping of customers/roles is done through the acl_customer_role table.
I'm currently having issues making this relationship work. These are my entities (removed some standard annotations for brevity):
class Customer {
/**
* #ORM\ManyToMany(targetEntity="AclRole", cascade="persist")
* #ORM\JoinTable(name="acl_customer_role",
* joinColumns={#ORM\JoinColumn(name="acl_role_id", referencedColumnName="customer_id")}
* )
*/
protected $roles;
}
class AclRole {
/**
* #ORM\Column(name="id", type="integer", nullable=false)
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
protected $id;
}
As you can see, in my customer entity I'm defining the $roles. It's a ManyToMany relationship since many roles can belong to many customers. I'm setting up my join table to be acl_customer_role and I specify the columns on which the join needs to take place. However, I get the following error:
PHP Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[42S22]: Column not found: 1054 Unknown column 'acl_customer_role.aclrole_id' in 'on clause'' in vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php:641
It seems that Doctrine's query is trying to join on 'acl_customer_role.aclrole_id' which obviously doesn't exists.
How can I specify the relationship correctly?
UPDATE:
Somehow it seems that Doctrine is modifying my column name. When I specify acl_role_id Doctrine strips out the first underscore and assumes that the column name is aclrole_id (as demonstrated in the error message in the question above). However, when I add two underscores such as acl__role_id it leaves all underscores in there and gives pretty much the same error other than that now it can't join on acl__role_id.
I'm pretty much at a loss..

Answer 1

I know this question is old but recently i have came across the same error / problem and i have found the solution.
By default Doctrine is using DefaultNamingStrategy class for generating e.g. joinColumn, joinTableName, propertyToColumnName names:
...
public function joinColumnName($propertyName)
{
return $propertyName . '_' . $this->referenceColumnName();
}
That's why in your case aclrole_id column was generated.
To change that behavior all you have to do is to change naming strategy for Doctrine2 to underscore in you app/config.yml file:
doctrine:
orm:
# ...
naming_strategy: doctrine.orm.naming_strategy.underscore
UnderscoreNamingStrategy class
...
public function joinColumnName($propertyName)
{
return $this->underscore($propertyName) . '_' . $this->referenceColumnName();
}
This would generate: acl_role_id
You can also implement your custom naming strategy: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/namingstrategy.html
Note: This was introduced in version 2.3.