如何将变量添加到ActiveRecord中：condition =＆gt; “”

Question

尝试将变量放入：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块并转发+常规但都失败了

Answer 1

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

您应该可以执行以下操作：

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