Started working on the assignments page

src/utils/assignments.be.ts

@@ -23,6 +23,10 @@ export const getAssignments = async () => {
 	return await db.collection("assignments").find<Assignment>({}).toArray();
 };
 
+export const getAssignment = async (id: string) => {
+	return await db.collection("assignments").findOne<Assignment>({id});
+};
+
 export const getAssignmentsByAssignee = async (id: string, filter?: {[key in keyof Partial<Assignment>]: any}) => {
 	return await db
 		.collection("assignments")

src/utils/groups.be.ts

@@ -84,6 +84,12 @@ export const getAllAssignersByCorporate = async (corporateID: string, type: Type
 	return [...linkedTeachers.users.map((x) => x.id), ...linkedCorporates.users.map((x) => x.id)];
 };
 
+export const getGroupsForEntities = async (ids: string[]) =>
+	await db
+		.collection("groups")
+		.find<Group>({entity: {$in: ids}})
+		.toArray();
+
 export const getGroupsForUser = async (admin?: string, participant?: string) => {
 	if (admin && participant) return await db.collection("groups").find<Group>({admin, participant}).toArray();
 

src/utils/index.ts

@@ -44,10 +44,7 @@ export const convertBase64 = (file: File) => {
 	});
 };
 
-export const mapBy = <T>(obj: T[], key: keyof T) => {
-	if (!obj) return undefined;
-	return obj.map((i) => i[key]);
-};
+export const mapBy = <T>(obj: T[] | undefined, key: keyof T) => (obj || []).map((i) => i[key]);
 export const filterBy = <T>(obj: T[], key: keyof T, value: any) => obj.filter((i) => i[key] === value);
 
 export const serialize = <T>(obj: T): T => JSON.parse(JSON.stringify(obj));