4
我有查詢與此Django的自定義左外連接
news = News.objects.filter(Q(likes__user__isnull=True)|Q(likes__user=user))
.extra(select={"is_liked":NewsLikes._meta.db_table+".user_id = %d" % user.id})
這給了我下面的查詢Django的模型
SELECT (shows_newslikes.user_id = 143) AS `is_liked`, * FROM `shows_news`
LEFT OUTER JOIN `shows_newslikes` ON (`shows_news`.`id` = `shows_newslikes`.`news_id`)
WHERE (`shows_newslikes`.`user_id` IS NULL OR `shows_newslikes`.`user_id` = 143)
我要的是下面的查詢的結果
SELECT (shows_newslikes.user_id = 143) AS `is_liked`, *
FROM `shows_news` LEFT OUTER JOIN `shows_newslikes` ON (`shows_news`.`id` =
`shows_newslikes`.`news_id` and `shows_newslikes`.`user_id` = 143) WHERE
(`shows_newslikes`.`user_id` IS NULL )
所以我必須做的查詢Django模型
,我想這樣做沒有原始查詢 – Muneeb 2014-09-13 08:52:54
究竟什麼是你想怎麼辦?你是否想用一個布爾值來註釋每個產生的'News'對象,告訴你該行是否'喜歡'? – 2014-09-13 10:11:19
是的...我想要做的事情,但與左外連接 – Muneeb 2014-09-13 10:50:37