add timestamp field to mysql

.gitignore

@@ -161,3 +161,5 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
+# My File
+.secret

.secret

@@ -1 +1 @@
-o36r0lgw71mdzm9rkwrv3wi1wn|3600|1715909100.492765|oadugxyl9fhoqsamqopc
+ontipj0py431xul5zm4kj6gzzo|3600|1715933457.543795|oadugxyl9fhoqsamqopc

decspider/pipelines.py

@@ -24,7 +24,9 @@ class DecspiderPipeline:
         # 检查表是否存在，如果不存在就创建表
         self.cursor.execute(f"""
             CREATE TABLE IF NOT EXISTS `{self.table_name}` (
-                id INT AUTO_INCREMENT PRIMARY KEY
+                id INT AUTO_INCREMENT PRIMARY KEY,
+                created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+                updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
             )
         """)
 
@@ -41,15 +43,25 @@ class DecspiderPipeline:
                 self.cursor.execute(f"ALTER TABLE `{self.table_name}` ADD COLUMN `{column}` TEXT")
                 spider.log(f'Added column `{column}` to `{self.table_name}` table')
 
+        # 添加 created_at 和 updated_at 字段，如果它们不存在
+        if 'created_at' not in existing_columns:
+            self.cursor.execute(f"ALTER TABLE `{self.table_name}` ADD COLUMN `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP")
+            spider.log(f'Added column `created_at` to `{self.table_name}` table')
+
+        if 'updated_at' not in existing_columns:
+            self.cursor.execute(f"ALTER TABLE `{self.table_name}` ADD COLUMN `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP")
+            spider.log(f'Added column `updated_at` to `{self.table_name}` table')
+
         # 删除表中不存在于 NewsItem 中的字段
         for column in existing_columns:
-            if column not in item_columns and column != 'id':
+            if column not in item_columns and column not in {'id', 'created_at', 'updated_at'}:
                 self.cursor.execute(f"ALTER TABLE `{self.table_name}` DROP COLUMN `{column}`")
                 spider.log(f'Dropped column `{column}` from `{self.table_name}` table')
 
         self.conn.commit()
 
 
+
     def close_spider(self, spider):
         self.conn.close()