ActiveRecord update method can support condition (SQL where clause)?
My rails application always query data by some unique key then update this data (if no data, create one). It is two SQL statement. Want to improve the performance, combine it into one SQL update statement.
if ActiveRecord not support, can i have some way to customize ActiveRecord ?
http://api.rubyonrails.com/classes/ActiveRecord/Base.html#M000999
you'll need to check the update count to see if the object doesn't already exist, of course.
- donald