更新 database_manager.py

db/database_manager.py

@@ -148,3 +148,23 @@ WHERE
         val = (student_number, course_id, course_name, date, status)
         result = self.execute(sql, val)
         return result
+
+    def get_class_courses(self,student_number):
+        # 1. 查询学生的主修专业
+        major_sql = "SELECT major_id FROM student WHERE student_number = %s;"
+        major_result = self.fetch(major_sql, student_number)
+        print(major_result)
+        major_id = major_result[0]['major_id']
+
+        # 2. 查询专业的所有课程ID
+        course_ids_sql = "SELECT course_id FROM major_course WHERE major_id = %s;"
+        courses_result = self.fetch(course_ids_sql, major_id)
+        course_ids = [course['course_id'] for course in courses_result]
+
+        # 3. 对每个课程ID查询课程详细信息
+        courses_data = []
+        for course_id in course_ids:
+            course_sql = "SELECT course_name, course_code, credits, description FROM course WHERE course_id = %s;"
+            result = self.fetch(course_sql, course_id)
+            courses_data.append(result[0])
+        return courses_data  # 返回课程详细信息列表