Created
March 20, 2022 15:55
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Better error handling
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| #BEFORE | |
| def get(id: Int): Task[User] = | |
| SQL | |
| .get(id) | |
| .option | |
| .transact(tnx) | |
| .foldM( | |
| err => Task.fail(err), | |
| maybeUser => Task.require(UserNotFound(id))(Task.succeed(maybeUser)) | |
| ) | |
| #NOW | |
| def get(id: Int): IO[AppError, User] = | |
| SQL | |
| .get(id) | |
| .option | |
| .transact(tnx) | |
| .foldM( | |
| err => IO.fail(DBError(err.getMessage)), | |
| maybeUser => IO.require(UserNotFound(id))(Task.succeed(maybeUser)) | |
| ) |
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