Doctrine Many-To-Many - php

Question

Tags Entity :
<?php
namespace App\Entity;
use App\Entity;
use Doctrine\ORM\Mapping;
/**
* #Entity
* #Table(name="tags", options={"collate":"utf8_general_ci", "charset":"utf8", "engine":"MyISAM"})
*/
class Tags extends Entity {
/**
* Many Tags have Many HolidayPackages.
* #ManyToMany(targetEntity="HolidayPackages", mappedBy="tags")
* #JoinTable(name="holiday_tags",
* joinColumns={#JoinColumn(name="tid", referencedColumnName="id")},
* inverseJoinColumns={#JoinColumn(name="hpid", referencedColumnName="id")}
* )
*/
protected $holiday_packages;
/**
* #Column(type="string", length=255)
* #var string
*/
protected $tags;
/**
* #return mixed
*/
public function getHolidayPackages() {
return $this->holiday_packages;
}
/**
* #param mixed $holiday_packages
*/
public function setHolidayPackages($holiday_packages) {
$this->holiday_packages = $holiday_packages;
}
/**
* #return string
*/
public function getTags() {
return $this->tags;
}
/**
* #param string $tags
*/
public function setTags($tags) {
$this->tags = $tags;
}
}
Holiday Packages :
<?php
namespace App\Entity;
use App\Entity;
use Doctrine\ORM\Mapping;
/**
* #Entity
* #Table(name="holiday_packages", options={"collate":"utf8_general_ci", "charset":"utf8", "engine":"MyISAM"})
*/
class HolidayPackages extends Entity {
/**
* Many HolidayPackages have Many Tags.
* #ManyToMany(targetEntity="Tags", inversedBy="holiday_packages")
* #JoinTable(name="holiday_tags",
* joinColumns={#JoinColumn(name="hpid", referencedColumnName="id")},
* inverseJoinColumns={#JoinColumn(name="tid", referencedColumnName="id")}
* )
*/
protected $tags;
/**
* #return mixed
*/
public function getTags() {
return $this->tags;
}
/**
* #param mixed $tags
*/
public function setTags($tags) {
$this->tags = $tags;
}
}
I am trying to create many-to-many assocation mapping. I follow this link :
http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/association-mapping.html to make this mapping.
But when i try to update doctrine, error occure :
[Doctrine\DBAL\DBALException]
An exception occurred while executing 'ALTER TABLE holiday_tags DROP PRIMARY KEY':
SQLSTATE[42000]: Syntax error or access violation: 1075 Incorrect table definition; there can be only one auto column and it must be defined as a key
[PDOException]
SQLSTATE[42000]: Syntax error or access violation: 1075 Incorrect table definition; there can be only one auto column and it must be defined as a key
orm:schema-tool:update [--complete] [--dump-sql] [--force]
UPDATE
Entity Class :
<?php
namespace App;
use Doctrine\ORM\Mapping as ORM;
/**
* #MappedSuperclass
* #HasLifecycleCallbacks()
*/
abstract class Entity
{
/**
* #var integer
*
* #Column(name="id", type="integer")
* #Id
* #GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* #Column(type="datetime")
* #var \DateTime
*/
protected $created_at;
/**
* #Column(type="datetime", nullable=true)
* #var \DateTime
*/
protected $updated_at;
/**
* Constructor
*/
public function __construct() {
$this->setCreatedAt(new \DateTime());
$this->setUpdatedAt(new \DateTime());
}
/**
* #PreUpdate
*/
public function setUpdatedValue() {
$this->setUpdatedAt(new \DateTime());
}
/**
* Get id
*
* #return integer
*/
public function getId() {
return $this->id;
}
/**
* #param $created_at
*/
public function setCreatedAt($created_at) {
$this->created_at = $created_at;
}
/**
* #return \DateTime
*/
public function getCreatedAt() {
return $this->created_at->format('d/m/Y H:i');
}
/**
* #param $updated_at
*/
public function setUpdatedAt($updated_at) {
$this->updated_at = $updated_at;
}
/**
* #return \DateTime
*/
public function getUpdatedAt() {
return $this->updated_at;
}
}
It creates a class holidaypackages_tags but still give error and i specified name as holiday_tags but it named holidaypackages_tags...

Answer 1

You are trying to create the same table twice "holiday_tags"!
Try this:
class Tags extends Entity {
/**
* Many Tags have Many HolidayPackages.
* #ManyToMany(targetEntity="HolidayPackages", mappedBy="tags")
*/
protected $holiday_packages;
//...
}
class HolidayPackages extends Entity {
/**
* Many HolidayPackages have Many Tags.
* #ManyToMany(targetEntity="Tags", inversedBy="holiday_packages")
* #JoinTable(name="holiday_tags",
* joinColumns={#JoinColumn(name="hpid", referencedColumnName="id")},
* inverseJoinColumns={#JoinColumn(name="tid", referencedColumnName="id")}
* )
*/
protected $tags;
//...
}
Notice that there is no annotation to create the same table again on $holiday_packages field