task :migrate_accounts_schema => [:environment] do |t|
  users = User.find :all, :conditions => ["state = 2"], :order => "id asc"
  users.each do |user|
    if user.state == 2
      ActiveRecord::Base.establish_connection(
        :adapter  => "postgresql",
        :host     => user.database_host,
        :port     => user.database_port,
        :username => user.subdomain,
        :password => "#{user.database_password}",
        :database => user.database_name
      )
      Rake::Task["db:migrate"].invoke
    end
  end
end

** Invoke app:migrate_accounts_schema (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute app:migrate_accounts_schema
** Invoke db:migrate (first_time)
** Invoke environment
** Execute db:migrate
** Invoke db:schema:dump (first_time)
** Invoke environment
** Execute db:schema:dump
** Invoke db:migrate

# db/seed.rb
Rake::Task['catalog:destroy'].invoke

files = Dir.glob("private/catalog/*").sort
files.each do |file|
  next unless File.extname(file) == '.xlsx'
  puts file.split('/').last
  Rake::Task['catalog:upload'].invoke(file)
  Rake::Task['catalog:upload'].reenable
  puts
end