ruby-on-rails - Rails / Active Record 查找加入、限制和偏移

Question

我整理了以下查询，它按我的预期工作：

  stuff = @thing.children.find(
    :all,
    :joins => :other,
    :conditions => {:others => {:another_id => some_id}},
    :limit => my_limit,
    :offset => my_offset,
  )

但是，find(:all)不推荐使用表单查询。我尝试将查询更改为以下形式：

  stuff = @thing.children.find(
    :joins => :other,
    :conditions => {:others => {:another_id => some_id}},
    :limit => my_limit,
    :offset => my_offset,
  ).all

但这会引发数据库错误。编写此查询的正确方法是什么？

Answer 1

如果不将其重写为 Arel，您可以简单地将 .find 更改为 .all，然后删除 :all 符号，如下所示：

stuff = @thing.children.all(
  :joins => :other,
  :conditions => {:others => {:another_id => some_id}},
  :limit => my_limit,
  :offset => my_offset,
)