Displaying 1 result from an estimated 1 matches for "generate_uuid".
2013 Oct 25
6
Migrate postgresql database to uuid
....9.3,Now i want to use uuid concept in
rails 3 for existing data
so i did like :-
create_table :posts, :id => false do |t|
t.string :uuid, :limit => 36, :primary => true
end
ActiveRecord::Base.class_eval do
# old rails versions
set_primary_key ''uuid''
before_create :generate_uuid
def generate_uuid
self.id = UUIDTools::UUID.random_create.to_s
end
end
This is working for new data,now i want to migrate existing data with
relation.for uuid they are using datatype as string,in postgresql the
data type used for primary_key and foreign key is integer ,so if i am
trying to change...