ruby - 这个怎么写比较好？ Ruby Sequel 链接或

Question

在 SQL 中它应该是这样的:

SELECT * FROM `categories_description_old` WHERE ((`categories_description` = '') OR (`categories_name` = '') OR (`categories_heading_title` = ''))

我的(丑陋的)解决方案:

conditions = [:categories_name, :categories_heading_title, :categories_description]
b = table_categories_description_old.filter(conditions.pop => "")
conditions.each do |m|
 b = b.or(m => "")
end

是否有更好的解决方案来链接 or 条件？

Answer 1

 DB[:categories_description_old].
   filter({:categories_description=>'',
           :categories_name=>'',
           :categories_heading_title=>''}.sql_or)