Rails - Aug 2006 - Calling a Controller method from the command line

Hi All,

I need to run some reports via cron.  I know I can use runner and call
a method in a model class.  But I''d really like to use templates and
IMO this kind of logic belongs in a controller anyways.

These are periodic reports so I don''t need nor want to leave a server
running all the time, so getting the data via curl/wget isn''t really
an option.

What I really want is
       script/controller_runner MyController.my_method

Any suggestions?
-- 
Paul Haddad (paul.haddad@gmail.com paul@pth.com)

Hi All,

On 8/10/06, Paul Haddad <paul.haddad@gmail.com>
wrote:
> I need to run some reports via cron.  I know I can use runner and call
> a method in a model class.  But I''d really like to use templates
and
> IMO this kind of logic belongs in a controller anyways.
I never got any responses for this.  So I created the below which I
hope isn''t a reinvention of the wheel.  Stuck it in scripts and now I
can cron at will.

Not sure if anyone else is interested, but there it is.
-- 
Paul Haddad (paul.haddad@gmail.com paul@pth.com)

#!/usr/bin/env ruby
begin
  require File.dirname(__FILE__) + ''/../config/boot''

  require ''optparse''

  USAGE = "Usage: #{$0} Controller [action] [options]"

  options = { :environment => (ENV[''RAILS_ENV''] ||
''production'').dup }

  ARGV.options do |opts|
    opts.banner = USAGE

    opts.separator ''''

    opts.on(''-e'', ''--environment=name'',
String,
            ''Specifies the environment for the runner to operate under
(test/development/production).'',
            ''Default: production'') { |v| options[:environment]
= v }

    opts.separator ''''

    opts.on(''-h'', ''--help'',
            ''Show this help message.'') { puts opts; exit }

    opts.parse!
  end

  if (ARGV.empty?)
    puts(USAGE)
    exit(-1)
  end

  ENV[''RAILS_ENV''] = options[:environment]
  RAILS_ENV.replace(options[:environment]) if defined?(RAILS_ENV)

  require RAILS_ROOT + ''/config/environment''

  require ''application''
  include ActionController::TestProcess

  # Grab the controller class, constantize turns the string into a Class object
  begin
    controller_class = ARGV.first.constantize
  rescue Exception => e
    $stderr.puts("Couldn''t find controller
''#{ARGV.first}''")
    exit(-2)
  end

  request = ActionController::TestRequest.new
  response = ActionController::TestResponse.new
  request.action = ARGV[1]
  controller_class.process(request, response)
  if (response.success?)
    puts(response.body)
    exit(0)
  else
    $stderr.puts(response.body)
    exit(-3)
  end

rescue SystemExit => e
  raise
  # ignore Exit exception
rescue Exception => e
  $stderr.puts(e)
  exit(-4)
end