update

controllers/categoryController.js

@@ -311,7 +311,7 @@ class CategoryController {
       }
 
       // Build query conditions
-      const where = { id: id };
+      const where = { category_id: id };
       if (is_active !== undefined) where.is_active = is_active === 'true';
 
       // Query subjects
@@ -349,6 +349,90 @@ class CategoryController {
       next(error);
     }
   }
+
+  /**
+   * Add subject to category (Create subject within category context)
+   */
+  async addSubjectToCategory(req, res, next) {
+    try {
+      const { categoryId } = req.params;
+      const subjectData = req.body;
+
+      // Check if category exists
+      const category = await Categories.findByPk(categoryId);
+      if (!category) {
+        return res.status(404).json({
+          success: false,
+          message: 'Category not found',
+        });
+      }
+
+      // Create subject with category_id
+      const subject = await Subject.create({
+        ...subjectData,
+        category_id: categoryId,
+      });
+
+      // Clear cache
+      await cacheUtils.deletePattern('subjects:list:*');
+      await cacheUtils.deletePattern(`category:${categoryId}:subjects:*`);
+
+      res.status(201).json({
+        success: true,
+        message: 'Subject added to category successfully',
+        data: subject,
+      });
+    } catch (error) {
+      next(error);
+    }
+  }
+
+  /**
+   * Remove subject from category (Delete subject within category context)
+   */
+  async removeSubjectFromCategory(req, res, next) {
+    try {
+      const { categoryId, subjectId } = req.params;
+
+      // Check if category exists
+      const category = await Categories.findByPk(categoryId);
+      if (!category) {
+        return res.status(404).json({
+          success: false,
+          message: 'Category not found',
+        });
+      }
+
+      // Find subject
+      const subject = await Subject.findOne({
+        where: { 
+          id: subjectId,
+          category_id: categoryId,
+        },
+      });
+
+      if (!subject) {
+        return res.status(404).json({
+          success: false,
+          message: 'Subject not found in this category',
+        });
+      }
+
+      await subject.destroy();
+
+      // Clear cache
+      await cacheUtils.delete(`subject:${subjectId}`);
+      await cacheUtils.deletePattern('subjects:list:*');
+      await cacheUtils.deletePattern(`category:${categoryId}:subjects:*`);
+
+      res.json({
+        success: true,
+        message: 'Subject removed from category successfully',
+      });
+    } catch (error) {
+      next(error);
+    }
+  }
 }
 
 module.exports = new CategoryController();