ruby-on-rails - 如何将变量添加到 ActiveRecord 中：condition => ''

Question

试图将变量放入 :condition 语句。

user = User.all(:conditions => 'confirmed_at is NULL AND 
confirmation_sent_at <= DATE_SUB(NOW(), INTERVAL X day)')

如何在 X 日部分注入变量？我尝试了 proc 块和转义 + 常规但都失败了

Answer 1

根据文档： http: //guides.rubyonrails.org/active_record_querying.html#array-conditions

您应该能够执行以下操作：

User.where('confirmed_at is NULL AND confirmation_sent_at <= DATE_SUB(NOW(), INTERVAL ? day)', your_variable)