init medical training project

apps/common/models.py

@@ -0,0 +1,10 @@
+from django.db import models
+
+
+class BaseModel(models.Model):
+    """基础模型，包含通用字段"""
+    created_at = models.DateTimeField('创建时间', auto_now_add=True)
+    updated_at = models.DateTimeField('更新时间', auto_now=True)
+
+    class Meta:
+        abstract = True