I\'m trying to add a \"sticky\" option on my forum topics. This is how my migration looks like def self.up
I am trying to implement the Devise authentication library and also add columns that I may need to use that are particular to my own application.
I have the following ActiveRecord migration: class CreateSubjects < ActiveRecord::Migration def self.up
Running Rails 3 with PostgreSQL, I\'ve a migration, updating millions of small records. Record.find_each do |r|
I\'m trying to rollback my rails3 database (postgresql) a few steps to make some changes. I added a migration file today. rake db:rollback successfully rolled back.
After generating / writing / running a Rail开发者_高级运维s database migration, should the migration file and db/schema.rb be committed to version control separately? Some rake tasks that should be si
After cre开发者_运维知识库ating a migration file with rails generate migration AddClientToUser I can edit my migration file like so:
What is the best way to define a fixed-length SQL column (CHAR(12) for instance) through a Rails migration ?
I have a Products table and want to add a column: t.references :imageable, :polymorphic => true I was trying to generate migration for this by doing:
I am using Rails 3. I don\'t know if it is the rule of rails that inside migration, it seems I can not insert data into database table. If someone can confirm it is so.
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