The following code structure to get things by its ID:

	app := &m.Application{ID: *id}
	result := DB.Debug().
		Where("tenant_id = ?", a.TenantID).
		First(&app)
	if result.Error != nil {
		return nil, util.NewErrNotFound("application")
	}

Tends to be problematic when the struct has a default value, since Gorm tends to ignore those and removes the "Where" condition for those. So in the above example, if we provided an ID with the value 0, Gorm simply issues the following query:

SELECT
    *
FROM
    applications
WHERE
    tenant_id = ?
LIMIT 1

Which results in unexpected behaviour.