feat: update init users

apps/user/serializers.py

@@ -120,6 +120,16 @@ class TeacherStudentRelationSerializer(serializers.ModelSerializer):
         model = TeacherStudentRelation
         fields = '__all__'
 
+    def validate(self, attrs):
+        # 师生关系只能在 带教医生(doctor) 与 学生(student) 之间建立
+        teacher = attrs.get('teacher') or getattr(self.instance, 'teacher', None)
+        student = attrs.get('student') or getattr(self.instance, 'student', None)
+        if teacher is not None and teacher.role_type != 'doctor':
+            raise serializers.ValidationError({'teacher': '带教方必须是带教医生(doctor)'})
+        if student is not None and student.role_type != 'student':
+            raise serializers.ValidationError({'student': '学生方必须是学生(student)'})
+        return attrs
+
 
 class InstitutionSerializer(serializers.ModelSerializer):
     class Meta: