support keyword crawl

core/models.py

@@ -72,6 +72,11 @@ class CrawlTask(models.Model):
     
     created_by = models.CharField(max_length=100, blank=True, null=True, verbose_name="创建者")
     
+    # 执行历史字段
+    execution_count = models.IntegerField(default=0, verbose_name="执行次数")
+    last_execution_at = models.DateTimeField(blank=True, null=True, verbose_name="最后执行时间")
+    execution_history = models.JSONField(default=list, blank=True, verbose_name="执行历史")
+    
     class Meta:
         verbose_name = "爬取任务"
         verbose_name_plural = "爬取任务"
@@ -122,4 +127,47 @@ class CrawlTask(models.Model):
             return f"失败: {self.error_message[:50]}..." if self.error_message else "失败"
         elif self.status == 'cancelled':
             return "已取消"
-        return "未知状态"
+        return "未知状态"
+    
+    def add_execution_record(self, status, started_at=None, completed_at=None, error_message=None):
+        """添加执行记录"""
+        if not started_at:
+            started_at = timezone.now()
+        
+        execution_record = {
+            'execution_id': len(self.execution_history) + 1,
+            'started_at': started_at.isoformat() if started_at else None,
+            'completed_at': completed_at.isoformat() if completed_at else None,
+            'status': status,
+            'error_message': error_message,
+            'success_count': self.success_count,
+            'failed_count': self.failed_count,
+            'total_articles': self.total_articles
+        }
+        
+        # 更新执行历史
+        if not self.execution_history:
+            self.execution_history = []
+        
+        self.execution_history.append(execution_record)
+        
+        # 更新执行次数和最后执行时间
+        self.execution_count += 1
+        self.last_execution_at = started_at
+        
+        # 只保留最近10次执行记录
+        if len(self.execution_history) > 10:
+            self.execution_history = self.execution_history[-10:]
+        
+        self.save()
+    
+    def get_execution_summary(self):
+        """获取执行摘要"""
+        if not self.execution_history:
+            return "暂无执行记录"
+        
+        total_executions = len(self.execution_history)
+        successful_executions = len([r for r in self.execution_history if r['status'] == 'completed'])
+        failed_executions = len([r for r in self.execution_history if r['status'] == 'failed'])
+        
+        return f"执行 {total_executions} 次，成功 {successful_executions} 次，失败 {failed_executions} 次"