Run Transactions and Capturing Errors with Ecto.Multi

The Ecto.Multi struct

The other way to use Repo.transaction is to pass in an Ecto.Multi struct rather than a function. The Ecto.Multi struct allows us to group our database operations into a data structure. When handed to the transaction function, the Multi’s operations run in order. If any of them fail, all of the others are rolled back.

Let’s take a look at an earlier example where we ran a transaction with an anonymous function.