timestamp_fix.rb

timestamp_fix.rb

class FixTimestamps < ActiveRecord::Migration
  def up
    Dir.glob(Rails.root.join("app/models/**/*.rb")) do |f|
      require f
    end

    ActiveRecord::Base.send(:subclasses).each do |klass|
      [
        "created_at",
        "updated_at"
      ].each do |col_name|
        if klass.column_names.include?(col_name)
          column = klass.columns.find{|i| i.name == col_name}
          if column.null
            change_column klass.table_name, col_name, :datetime, null: false
          end
        end
      end
    end

  end

  def down
  end
end