update cate

models/index.js

@@ -20,6 +20,7 @@ const StaffContract = require('./StaffContract');
 
 // Group 3: Academic Structure
 const AcademicYear = require('./AcademicYear');
+const Categories = require('./Categories');
 const Subject = require('./Subject');
 const Class = require('./Class');
 const ClassSchedule = require('./ClassSchedule');
@@ -149,6 +150,10 @@ const setupRelationships = () => {
   ClassSchedule.belongsTo(TeacherDetail, { foreignKey: 'teacher_id', as: 'teacher' });
   
   // Learning Content relationships (NEW)
+  // Categories -> Subject (1:N)
+  Categories.hasMany(Subject, { foreignKey: 'category_id', as: 'subjects' });
+  Subject.belongsTo(Categories, { foreignKey: 'category_id', as: 'category' });
+  
   // Subject -> Chapter (1:N)
   Subject.hasMany(Chapter, { foreignKey: 'subject_id', as: 'chapters' });
   Chapter.belongsTo(Subject, { foreignKey: 'subject_id', as: 'subject' });
@@ -277,6 +282,7 @@ module.exports = {
   
   // Group 3: Academic Structure
   AcademicYear,
+  Categories,
   Subject,
   Class,
   ClassSchedule,