Use Schemas to Seed a Database

Insert records with insert_all

Once we’ve set up schemas for our tables, inserting new records, even records with nested associations, can be done very concisely. Recall how we inserted new artists record using Repo.insert_all::

With insert_all, we provide the table name and a list of fields containing the new record’s values. If we want the ID of the new record, we have to ask for it with the returning ...