I have list of comments in one array. Can I use update_all on array ?
comments = Comments.find(:all,:conditions => ["test is not null"])
comments.update_all(:test => nil)
You can if you work with scopes (
all -in older version of Rails- returned an array):
comments = Comments.scoped(:conditions => "test IS NOT NULL") comments.update_all(:test => nil)
On modern versions of Ruby/ActiveRecord you can write:
Comments.where.not(test: nil).update_all(test: nil)