ruby on rails 3 -在两个表上使用连接和条件进行活动记录查询

Question

我想使用活动记录做这个查询，这样我就可以使查询从注入安全。DB是Postgresql。Ruby on Rails 3.2.11

 def find_possible_duplicates(last_name, date_of_birth, organisation_id)
    find_by_sql( 'select c.* from clients c' +
                 ' join locations l on c.location_id = l.id' +
                 " where c.last_name ILIKE #{last_name}" +
                 " and c.date_of_birth = #{date_of_birth}" +
                 " and l.organisation_id = #{organisation_id}" 
 end        

感谢您的帮助

Answer 1

下面是活动记录查询:

 Client.select('clients.*').
 joins('join locations on clients.location_id=locations.id').
 where('last_name like ? and date_of_birth =? and organisation_id = ?',last_name,date_of_birth,organisation_id)