update fetch and fixed bug

service/db/dbGroups.go

@@ -0,0 +1,45 @@
+package db
+
+import (
+	"github.com/pocketbase/pocketbase"
+	"github.com/pocketbase/pocketbase/models"
+	"htwk-planner/model"
+)
+
+func SaveGroups(seminarGroup []model.SeminarGroup, collection *models.Collection, app *pocketbase.PocketBase) error {
+	for _, group := range seminarGroup {
+		record := models.NewRecord(collection)
+		record.Set("university", group.University)
+		record.Set("shortcut", group.GroupShortcut)
+		record.Set("groupId", group.GroupId)
+		record.Set("course", group.Course)
+		record.Set("faculty", group.Faculty)
+		record.Set("facultyId", group.FacultyId)
+		if err := app.Dao().SaveRecord(record); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func GetAllCourses(app *pocketbase.PocketBase) []string {
+
+	var courses []struct {
+		Rooms string `db:"course" json:"course"`
+	}
+
+	// get all rooms from event records in the events collection
+	err := app.Dao().DB().Select("course").From("groups").All(&courses)
+	if err != nil {
+		print("Error while getting groups from database: ", err)
+		return nil
+	}
+
+	var courseArray []string
+
+	for _, room := range courses {
+		courseArray = append(courseArray, room.Rooms)
+	}
+
+	return courseArray
+}