这在本地工作,但不适用于生产服务器。

使用ubuntu 10.04,rails 3.0.7,ruby 1.9.2和mysql2 gem

我究竟做错了什么?

雾视图:

- unless current_user.surveys.include?(survey)


退货

ActionView::Template::Error (Mysql2::Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'NULL))) LIMIT 1' at line 1: SELECT  1 FROM `surveys` INNER JOIN `response_sets` ON `surveys`.id = `response_sets`.survey_id WHERE `surveys`.`id` = 1 AND ((`response_sets`.user_id = 1) AND ((completed_at NOT NULL))) LIMIT 1):


编辑

使用一种称为测量员的宝石。在不编辑实际gem的情况下,我必须像在用户模型中那样创建关联:

has_many :response_sets
has_many :surveys, :through => :response_sets, :conditions => ["completed_at NOT NULL"]
has_many :responses, :through => :response_sets


数据库表:

最佳答案

我很确定语法是“ IS NOT NULL”,而不仅仅是“ NOT NULL”。我在MySQL实例上进行了测试,但忽略了IS

08-20 03:29