server/libfic/exercice_tag.go

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package fic
import (
"strings"
)
// GetTags returns tags associated with this exercice.
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func (e *Exercice) GetTags() (tags []string, err error) {
if rows, errr := DBQuery("SELECT tag FROM exercice_tags WHERE id_exercice = ?", e.Id); errr != nil {
return nil, errr
} else {
defer rows.Close()
tags = make([]string, 0)
for rows.Next() {
var t string
if err = rows.Scan(&t); err != nil {
return
}
tags = append(tags, t)
}
err = rows.Err()
return
}
}
// AddTag assign a new tag to the exercice and registers it into the database.
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func (e *Exercice) AddTag(tag string) (string, error) {
tag = strings.Title(tag)
if _, err := DBExec("INSERT INTO exercice_tags (id_exercice, tag) VALUES (?, ?)", e.Id, tag); err != nil {
return "", err
} else {
return tag, nil
}
}
// DeleteTag delete a tag assigned to the current exercice from the database.
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func (e *Exercice) DeleteTag(tag string) (int64, error) {
if res, err := DBExec("DELETE FROM exercice_tags WHERE id_exercice = ? AND tag = ?", e.Id, tag); err != nil {
return 0, err
} else if nb, err := res.RowsAffected(); err != nil {
return 0, err
} else {
return nb, err
}
}
// WipeTags delete all tag assigned to the current exercice from the database.
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func (e *Exercice) WipeTags() (int64, error) {
if res, err := DBExec("DELETE FROM exercice_tags WHERE id_exercice = ?", e.Id); err != nil {
return 0, err
} else if nb, err := res.RowsAffected(); err != nil {
return 0, err
} else {
return nb, err
}
}