Rails migrations are used to track and apply database alterations in a reversible manner.
Rails 3.2 MySQL gem I have the following in my migration: t.decimal :pre_tax_total, default: nil, scale: 2 t.decimal :…
ruby-on-rails activerecord rails-migrationsOn migration I get the following error message: PG::UndefinedTable: ERROR: relation "actioncodes" does not exist : ALTER TABLE "organizations" ADD …
ruby-on-rails postgresql ruby-on-rails-4 rails-migrationshere is my migration in rails 3.2.2: class CreateStatistics < ActiveRecord::Migration def change create_table :statistics do |t| t.string :…
ruby-on-rails rails-migrationsI created a table using the following migration: class CreateProfilePictures < ActiveRecord::Migration def change create_table :profile_pictures do |…
sql ruby-on-rails rails-migrationsBy mistake I removed the autoincrement option from id field of my table. Can anyone tell me how I can …
ruby-on-rails activerecord auto-increment rails-migrationsIn my migration I have: def up MyModel.destroy_all MyModel.create!({:id=>1,:name=>'foo'}) MyModel.create!({:id=&…
ruby-on-rails-3 activerecord rails-migrationsHow do I create a migration with two fields that reference the same table? I have tables A, and image. …
ruby-on-rails ruby rails-activerecord rails-migrationsIn Rails 2, will removing a column with a Rails migration also change/remove indexes associated with the column? If not, …
ruby-on-rails rails-migrationsI need to migrate an old mysql table like this: Products name (string, primary_key) to this schema: Products id (…
ruby-on-rails database-migration rails-migrationsI have the following migration and I want to be able to check if the current database related to the …
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