add new group table to database

handlers/group.go

@@ -0,0 +1,49 @@
+package handlers
+
+import (
+	"errors"
+
+	"gitea.tecamino.com/paadi/memberDB/models"
+)
+
+func (dh *DatabaseHandler) NewGroup(group *models.Group) error {
+	if !dh.DatabaseOpened() {
+		return errors.New("database not opened")
+	}
+
+	if dh.database.Exists(&models.Group{}, "name", group.Name, false) {
+		return errors.New("group with name: " + group.Name + " exists already")
+	}
+	return dh.database.AddNewColum(&group)
+}
+
+func (dh *DatabaseHandler) GetGroup(id uint) (group []models.Group, err error) {
+	if !dh.DatabaseOpened() {
+		return group, errors.New("database not opened")
+	}
+
+	err = dh.database.GetById(&group, id)
+	if err != nil {
+		return
+	}
+	return
+}
+
+func (dh *DatabaseHandler) UpdateGroup(id int, group models.Group) (err error) {
+	if !dh.DatabaseOpened() {
+		return errors.New("database not opened")
+	}
+	return dh.database.UpdateValuesById(&group, uint(group.Id))
+}
+
+func (dh *DatabaseHandler) DeleteGroup(ids ...uint) error {
+	if !dh.DatabaseOpened() {
+		return errors.New("database not opened")
+	}
+
+	if len(ids) == 0 {
+		return errors.New("no ids given to be deleted")
+	}
+
+	return dh.database.DeleteById(&models.Group{}, ids...)
+}