Understanding many_to_many relations in Ecto

[krishna_vaguelyright]

Found this thread that discusses this… will update as I implement this

New Ecto "How-To" Guide: Self-referencing many to many

On one of my early design choices for an earlier version of Metamorphic I used a separate relationship_type that was associated to a relationship through a has_many / belongs_to association. # relationship.ex ... belongs_to :relationship_type, RelationshipType, type: :binary_id ... # relationship_type.ex ... has_many :relationships, Relationship ... # person.ex ... many_to_many :relationships, Person, join_through: Relationship, join_keys: [person_id: :id, relation_id: :id], join_…