configure :development do
  set :database, "sqlite:///dev.db"
  set :show_exceptions, true
end

configure :production do
  db = URI.parse(ENV["DATABASE_URL"] || 'postgres:///localhost/mydb')

  ActiveRecord::Base.establish_connection(
    :adapter => db.scheme == 'postgres' ? 'postgresql' : db.scheme,
    :host => db.host,
    :username => db.user,
    :password => db.password,
    :database => db.path[1..-1],
    :encoding => 'utf8'
  )

end

require './app_name'
require 'sinatra/activerecord/rake'

rake db:create_migration NAME=create_applicants

NoMethodError: undefined method `configure' for main:Object
/Users/harxy/Projects/bridgey/environments.rb:1:in `<top (required)>'