Fachschaft/sprechstunden-go
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Verbessere Fehlerbehandlung bei Tutoren und Sprechstunden

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This commit is contained in:
Gonne 2022-09-28 12:00:45 +02:00
parent 58eb848f20
commit c8f85e40c4
2 changed files with 38 additions and 39 deletions
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71
repositories/tutor.go
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@ -26,35 +26,15 @@ func (r *TutorRepo) FindByEmail(email string) ([]models.Tutor, error) {
}
defer rows.Close()
var tutors []models.Tutor
for rows.Next() {
var tutor models.Tutor
if err := rows.Scan(&tutor.Id, &tutor.Name, &tutor.Email); err != nil {
err = fmt.Errorf("Error scanning tutor row: %w", err)
log.Println(err.Error())
return tutors, err
}
tutors = append(tutors, tutor)
}
return tutors, nil
return r.getFromRows(rows)
}
func (r *TutorRepo) FindById(id int) (models.Tutor, error) {
row := r.db.QueryRow("SELECT * FROM tutor WHERE id=?", id)
var tutor models.Tutor
if err := row.Scan(&tutor.Id, &tutor.Name, &tutor.Email); err != nil {
return models.Tutor{}, err
}
return tutor, nil
return r.getFromRow(r.db.QueryRow("SELECT * FROM tutor WHERE id=?", id))
}
func (r *TutorRepo) FindByNameAndEmail(name string, email string) (models.Tutor, error) {
row := r.db.QueryRow("SELECT * FROM tutor WHERE email=? AND name=?", email, name)
var tutor models.Tutor
if err := row.Scan(&tutor.Id, &tutor.Name, &tutor.Email); err != nil {
return models.Tutor{}, err
}
return tutor, nil
return r.getFromRow(r.db.QueryRow("SELECT * FROM tutor WHERE email=? AND name=?", email, name))
}
func (r *TutorRepo) GetAll() ([]models.Tutor, error) {
@ -64,6 +44,38 @@ func (r *TutorRepo) GetAll() ([]models.Tutor, error) {
}
defer rows.Close()
return r.getFromRows(rows)
}
func (r *TutorRepo) Add(tutor models.Tutor) (int, error) {
//Don't add identical tutors
existentTutor, err := r.FindByNameAndEmail(tutor.Name, tutor.Email)
if errors.Is(err, sql.ErrNoRows) {
sqlResult, err := r.db.Exec("INSERT INTO `tutor` (name, email) VALUES (?,?)", tutor.Name, tutor.Email)
if err != nil {
err = fmt.Errorf("SQL-error inserting new tutor: %w", err)
log.Println(err.Error())
return 0, err
}
id, lastInsertIdErr := sqlResult.LastInsertId()
if lastInsertIdErr != nil {
log.Printf("Error getting Id for new tutor: %s", lastInsertIdErr.Error())
}
return int(id), err
}
return existentTutor.Id, err
}
func (r *TutorRepo) getFromRow(row *sql.Row) (models.Tutor, error) {
var tutor models.Tutor
if err := row.Scan(&tutor.Id, &tutor.Name, &tutor.Email); err != nil {
err = fmt.Errorf("SQL-error scanning tutor row: %w", err)
log.Println(err.Error())
return models.Tutor{}, err
}
return tutor, nil
}
func (r *TutorRepo) getFromRows(rows *sql.Rows) ([]models.Tutor, error) {
var tutors []models.Tutor
for rows.Next() {
var tutor models.Tutor
@ -76,16 +88,3 @@ func (r *TutorRepo) GetAll() ([]models.Tutor, error) {
}
return tutors, nil
}
func (r *TutorRepo) Add(tutor models.Tutor) (int, error) {
//Don't add identical tutors
existentTutor, err := r.FindByNameAndEmail(tutor.Name, tutor.Email)
if errors.Is(err, sql.ErrNoRows) {
sqlResult, err := r.db.Exec("INSERT INTO `tutor` (name, email) VALUES (?,?)", tutor.Name, tutor.Email)
id, lastInsertIdErr := sqlResult.LastInsertId()
if lastInsertIdErr != nil {
log.Printf("Error getting Id for new tutor: %s", lastInsertIdErr.Error())
}
return int(id), err
}
return existentTutor.Id, err
}