func (ls *Languages) Delete(optsx ...go2sql.DeleteOption) (err error) {
opts := go2sql.DeleteOptions(optsx)
db, ok := opts.GetDB()
if !ok {
db = go2sql.DefaultDB.DB
}
if db == nil {
err = errors.New("should specify *sql.DB by go2sql.DB or init go2sql.DefaultDB")
return
}
var ids []interface{}
var idsCons []string
for _, l := range *ls {
ids = append(ids, l.ID)
idsCons = append(idsCons, "id = ?")
}
_, err = db.Exec(`DELETE FROM languages WHERE `+strings.Join(idsCons, " or "), ids...)
if err != nil {
return
}
tables, _ := opts.GetTables()
for _, table := range tables {
switch table.Name {
case LanguageColumnAuthor:
var people People
for _, l := range *ls {
people = append(people, l.Author)
}
err = people.Delete(go2sql.DB(db))
case LanguageColumnKeywords:
var keywords Keywords
for _, l := range *ls {
keywords = append(keywords, l.Keywords...)
}
err = keywords.Delete(go2sql.DB(db))
case LanguageColumnTeachers:
var teachers Teachers
for _, l := range *ls {
teachers = append(teachers, l.Teachers...)
}
err = teachers.Delete(go2sql.DB(db))
default:
err = fmt.Errorf("go2sql: unknown column %s", table)
}
if err != nil {
return
}
}
return
}
func (l *Language) Delete(optsx ...go2sql.DeleteOption) (err error) {
if l == nil || l.IsEmptyRow() {
return
}
opts := go2sql.DeleteOptions(optsx)
db, ok := opts.GetDB()
if !ok {
db = go2sql.DefaultDB.DB
}
if db == nil {
err = errors.New("should specify *sql.DB by go2sql.DB or init go2sql.DefaultDB")
return
}
_, err = db.Exec(`DELETE FROM languages WHERE id = ?`, l.ID)
if err != nil {
return
}
tables, _ := opts.GetTables()
for _, table := range tables {
switch table.Name {
case LanguageColumnAuthor:
err = l.Author.Delete(go2sql.DB(db), table.Tables)
case LanguageColumnKeywords:
keywords := Keywords(l.Keywords)
err = keywords.Delete(go2sql.DB(db), table.Tables)
case LanguageColumnTeachers:
teachers := Teachers(l.Teachers)
err = teachers.Delete(go2sql.DB(db), table.Tables)
default:
err = fmt.Errorf("go2sql: unknown column %s", table)
}
if err != nil {
return
}
}
return
}