1

PythonProject/dao/student_dao.py

@@ -36,16 +36,29 @@ def delete_student_dao(stu_id,db):
         return rows
 
 def update_student_dao(stu_id,update_data,db):
+    if update_data.get('id_card'):
+        conflict = (db.query(Student_Model)
+                    .filter(Student_Model.id_card == update_data['id_card'],
+                            Student_Model.stu_id != stu_id,
+                            Student_Model.delete_status == 0)
+                    .first())
+        if conflict:
+            return 'conflict'
+
     try:
-        rows=(db.query(Student_Model)
-              .fiter(Student_Model.stu_id == stu_id,Student_Model.delete_status == 0)
-              .update(update_data))
-    except:
-        db.rollback()
-        return False
-    else:
+        rows = (db.query(Student_Model)
+                .filter(Student_Model.stu_id == stu_id,
+                        Student_Model.delete_status == 0)
+                .update(update_data))
         db.commit()
-        return rows
+    except IntegrityError:
+        db.rollback()
+        return 'conflict'
+    except Exception:
+        db.rollback()
+        return 'error'
+
+    return rows
 
 def get_student_dao(stu_id:Optional[int]
                    ,stu_name:Optional[str]