Add book list support in the database

lib/database/users.go

@@ -109,6 +109,14 @@ func (db *pgDB) ListUsers() ([]User, error) {
 	return users, err
 }
 
+func (db *pgDB) getUser(name string) (User, error) {
+	var user User
+	err := db.sql.Model(&user).
+		Where("username = ?", name).
+		Select()
+	return user, err
+}
+
 func validUserName(name string) bool {
 	switch name {
 	case "", "admin", "webmaster", "postmaster", "info", "root", "news":