的UserWarning消息每次我做的湯頁面與蟒蛇BS4一個源代碼,終端顯示: /usr/local/lib/python3.4/dist-packages/bs4/__init__.py:181: UserWarning: No parser was explicitly specified, so I'm using the best available HTML parser for thi
嗨努力做到以下幾點,當我最近就遇到了這個: posts = User.first.posts
posts.find {|p| "p.id" == 123} => ActiveRecord::RecordNotFound: Couldn't find Post without an ID
即試圖調用一個ActiveRecord找到。它期待: posts.find(123)
但我不想再次查詢