Wordpress multi-environment setup and Capistrano deployment hook

deploy.rb

# Namespaced to reduce conflict
namespace :mysite do

  desc 'Make a production file'
  task :production do
    on roles(:app), in: :groups do
      execute "touch #{release_path}/env_production"
    end
  end

end

after 'deploy:updated', 'mysite:production'

local-config.php

<?php

  /** Environment variable */
  define('WP_ENV', 'staging');

  /** The name of the database for WordPress */
  define('DB_NAME', '');

  /** MySQL database username */
  define('DB_USER', '');

  /** MySQL database password */
  define('DB_PASSWORD', '');

  /** MySQL hostname (Media Temple) */
  define('DB_HOST', $_ENV['DATABASE_SERVER']);

  /** Server name (your url) */
  $domain_name = 'http://dev.mysite.com';

  /* For developers: WordPress debugging mode. */
  define('WP_DEBUG', false);
    
?>

wp-config.php

<?php

/** Absolute path to files directory containing the wordpress folder */
$domain_dir = dirname(__FILE__);

// ** Check to see if a local config file exists ** //
if ( file_exists( $domain_dir . '/local-config.php') ) {

  /** If it does exist, then use it */
  include( $domain_dir . '/local-config.php');

  /** Environment variable */
  define('WP_ENV', 'local');

  /* For developers: WordPress debugging mode. */
  define('WP_DEBUG', true);

}

else if ( file_exists( $domain_dir . '/env_staging') ) {

  /** Environment variable */
  define('WP_ENV', 'staging');

  /** The name of the database for WordPress */
  define('DB_NAME', '');

  /** MySQL database username */
  define('DB_USER', '');

  /** MySQL database password */
  define('DB_PASSWORD', '');

  /** MySQL hostname (Media Temple) */
  define('DB_HOST', $_ENV['DATABASE_SERVER']);

  /** Server name (your url) */
  $domain_name = 'http://dev.mysite.com';

  /* For developers: WordPress debugging mode. */
  define('WP_DEBUG', false);

}

else {

  // ** MySQL settings - You can get this info from your web host ** //

  /** Environment variable */
  define('WP_ENV', 'production');

  /** The name of the database for WordPress */
  define('DB_NAME', '');

  /** MySQL database username */
  define('DB_USER', '');

  /** MySQL database password */
  define('DB_PASSWORD', '');

  /** MySQL hostname */
  define('DB_HOST', 'localhost');

  /** Server name (your url) */
  $domain_name = 'http://mysite.com';

  /* For developers: WordPress debugging mode. */
  define('WP_DEBUG', false);

}

define('WP_SITEURL', $domain_name . '/wp');
define('WP_HOME', $domain_name);
define('WP_CONTENT_URL', $domain_name . '/content');
define('WP_CONTENT_DIR', $domain_dir . '/content');