Proper way to update bidirectional Many to Many relationship symfony2-doctrine

Question

I did some research, and after reading this and this (and all the related questions) I still can\'t figure which is the proper way to update a many to many relationship in S

Answer 1

According to doctrine documentation it will only check the owning side of an association for changes.

http://doctrine-orm.readthedocs.org/en/latest/reference/unitofwork-associations.html

So the best way is keep owning side entity assotiations updated.

In this case you must remove and add support_log in student main in add and remove methods

class support_log
{
/**
* @ORM\ManyToMany(targetEntity="student_main", mappedBy="support_log")
**/
private $student;

public function addStudent($student) {
  $this->student[] = $student;
  $student->addSupportLog($this);
}

public function removeStudent($student) {
  $student->removeSupportLog($this);
  $this->student->removeElement($student);
}

Thats all no need to modify controller actions. Important implement this at the inverse side of association!