How to specify relationship between 2 entities through 3 entities in Doctrine?

Question

symfony

I have 3 entities (Entity) :

• Project - Project entity (id, name, description)
  
• Group - Group entity (id, name)
  
• GroupLink - Entity of the linking table ( id, project_id, group_id )
  

How to correctly specify the links so that the Group is available in the Project entity, if the relationship between them is through the 3rd table (GroupLink entity)?

Answer 1

Entity1 - OneToMany Entity2
Entity2 - ManyToOne Entity1 + ManyToOne Entity3
Entity3 - OneToMany Entity2