我試圖用數與圖像的所有答覆:
<%= Reply.where(:post_id => post.id).where(:reply_file_fingerprint => true).count %>
計數有兩個在那裏返回0
但是這回0
我怎樣才能正確計算包含的回覆數量圖片?
日誌:
SELECT COUNT(*) FROM "replies" WHERE "replies"."post_id" = 1 AND "replies"."reply_file_fingerprint" = 't'
在最近的Rails版本中,where.not(reply_file_fingerprint:nil).count –