teach/adlin
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Use pointer instead of struct

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This commit is contained in:
nemunaire 2021-03-07 12:39:38 +01:00
commit 6d8f38d749
18 changed files with 187 additions and 142 deletions
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25
libadlin/session.go
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@ -11,40 +11,41 @@ type Session struct {
Time time.Time `json:"time"`
}
func GetSession(id []byte) (s Session, err error) {
func GetSession(id []byte) (s *Session, err error) {
s = new(Session)
err = DBQueryRow("SELECT id_session, id_student, time FROM student_sessions WHERE id_session=?", id).Scan(&s.Id, &s.IdStudent, &s.Time)
return
}
func NewSession() (Session, error) {
func NewSession() (*Session, error) {
session_id := make([]byte, 255)
if _, err := rand.Read(session_id); err != nil {
return Session{}, err
return nil, err
} else if _, err := DBExec("INSERT INTO student_sessions (id_session, time) VALUES (?, ?)", session_id, time.Now()); err != nil {
return Session{}, err
return nil, err
} else {
return Session{session_id, nil, time.Now()}, nil
return &Session{session_id, nil, time.Now()}, nil
}
}
func (student Student) NewSession() (Session, error) {
func (student *Student) NewSession() (*Session, error) {
session_id := make([]byte, 255)
if _, err := rand.Read(session_id); err != nil {
return Session{}, err
return nil, err
} else if _, err := DBExec("INSERT INTO student_sessions (id_session, id_student, time) VALUES (?, ?, ?)", session_id, student.Id, time.Now()); err != nil {
return Session{}, err
return nil, err
} else {
return Session{session_id, &student.Id, time.Now()}, nil
return &Session{session_id, &student.Id, time.Now()}, nil
}
}
func (s Session) SetStudent(student Student) (Session, error) {
func (s *Session) SetStudent(student *Student) (*Session, error) {
s.IdStudent = &student.Id
_, err := s.Update()
return s, err
}
func (s Session) Update() (int64, error) {
func (s *Session) Update() (int64, error) {
if res, err := DBExec("UPDATE student_sessions SET id_student = ?, time = ? WHERE id_session = ?", s.IdStudent, s.Time, s.Id); err != nil {
return 0, err
} else if nb, err := res.RowsAffected(); err != nil {
@ -54,7 +55,7 @@ func (s Session) Update() (int64, error) {
}
}
func (s Session) Delete() (int64, error) {
func (s *Session) Delete() (int64, error) {
if res, err := DBExec("DELETE FROM student_sessions WHERE id_session = ?", s.Id); err != nil {
return 0, err
} else if nb, err := res.RowsAffected(); err != nil {