[Added]added CURD to coursework

Author: shreyam462

models/coursework.js

@@ -12,3 +12,39 @@ const courseworkSchema = {
 
 // eslint-disable-next-line  no-unused-vars
 const Coursework = connector.model("Coursework", courseworkSchema);
+
+async function remove(filter) {
+  const deleteResult = await Coursework.deleteMany(filter);
+  return deleteResult.acknowledged;
+}
+
+async function create(courseworkData) {
+  const {
+    student,type,course,task,objectID,activity,marks
+  } = courseworkData;
+  const coursework = new Coursework({
+    student,
+    type,
+    course,
+    task,
+    objectID,
+    activity,
+    marks
+  });
+  const courseworkDoc = await coursework.save();
+  return courseworkDoc;
+}
+
+async function read(filter, limit = 1) {
+  const courseworkDoc = await Coursework.find(filter).limit(limit);
+  return courseworkDoc;
+}
+
+async function update(filter, updateObject, options = { multi: true }) {
+  const updateResult = await Coursework.updateMany(filter, { $set: updateObject }, options);
+  return updateResult.acknowledged;
+}
+
+export default {
+  create, read, update, remove,
+};