pub async fn insert_exercise_slide_submission(
conn: &mut PgConnection,
exercise_slide_submission: NewExerciseSlideSubmission
) -> ModelResult<ExerciseSlideSubmission>
pub async fn insert_exercise_slide_submission(
conn: &mut PgConnection,
exercise_slide_submission: NewExerciseSlideSubmission
) -> ModelResult<ExerciseSlideSubmission>