class CreateSubmissions < ActiveRecord::Migration def self.up create_table :submissions do |t| t.column :user_id, :integer t.column :problem_id, :integer t.column :language_id, :integer t.column :source, :text t.column :binary, :binary t.column :submitted_at, :datetime t.column :compiled_at, :datetime t.column :compiler_message, :text t.column :graded_at, :datetime t.column :points, :integer t.column :grader_comment, :text end end def self.down drop_table :submissions end end