更新 database_manager.py

db/database_manager.py

@@ -124,3 +124,22 @@ WHERE
             """
         data = (student.student_name, student.student_number, student.user_id, student.major_id, student.class_name)
         return self.execute(sql, data)
+
+    def get_course_name(self, student_number, day_of_week):
+        # 从student表获取class_name
+        sql_student = "SELECT class_name FROM student WHERE student_number = %s;"
+        class_name = self.fetch(sql_student, (student_number,))[0]['class_name']
+
+        # 使用class_name和day_of_week从schedule表获取course_id
+        sql_schedule = "SELECT course_id, FROM schedule WHERE day_of_week = %s AND class_name = %s;"
+        course_id_list = self.fetch(sql_schedule, (day_of_week, class_name))
+
+        # 对于每一个course_id，从course表中查询course_name
+        course_names = []
+        for course_id in course_id_list:
+            sql_course = "SELECT course_name FROM course WHERE course_id = %s;"
+            course_name = self.fetch(sql_course, (course_id['course_id'],))
+            if course_name:
+                course_names.extend([cn['course_name'] for cn in course_name])
+
+        return course_names