Ecto.Association.HasThrough

Ecto.Association.HasThrough

The association struct for has_one and has_many through associations.

Its fields are:

• cardinality - The association cardinality
• field - The name of the association field on the schema
• owner - The schema where the association was defined
• owner_key - The key on the owner schema used for the association
• through - The through associations
• relationship - The relationship to the specified schema, default :child

Summary

Functions

on_repo_change(map, , , )

Performs the repository change on the association

Functions

on_repo_change(map, , , )

Performs the repository change on the association.

Receives the parent changeset, the current changesets and the repository action options. Must return the persisted struct (or nil) or the changeset error.

Callback implementation for c:Ecto.Association.on_repo_change/4.