Symfony2: How to remove an element from a Doctrine ArrayCollection (many-to-many relation)?
You're looking for the ArrayCollection::removeElement method here.
public function removeSchema(SchemaInterface $schema){ $this->schemata->removeElement($schema) return $this;}tip:
You can use ArrayCollection::add to add elements to an existing collection. OOP.
In some cases you may also want to check wether already contains the element before adding it.
public function addSchema(SchemaInterface $schema){ if (!$this->schemata->contains($schema)) { $this->schemata->add($schema); } return $this;}