# NAME

Config::ENV - Various config determined by %ENV

# SYNOPSIS

   package MyConfig;

   use Config::ENV 'PLACK_ENV'; # use $ENV{PLACK_ENV} to determine config

   common +{
     name => 'foobar',
   };

   config development => +{
     dsn_user => 'dbi:mysql:dbname=user;host=localhost',
   };

   config test => +{
     dsn_user => 'dbi:mysql:dbname=user;host=localhost',
   };

   config production => +{
     dsn_user => 'dbi:mysql:dbname=user;host=127.0.0.254',
   };

   config production_bot => +{
     parent('production'),
     bot => 1,
   };

   # Use it

   use MyConfig;
   MyConfig->param('dsn_user'); #=> ...

# DESCRIPTION

Config::ENV is for switching various configurations by environment variable.

# CONFIG DEFINITION

use this module in your config package:

   package MyConfig;
   use Config::ENV 'FOO_ENV';

   common +{
     name => 'foobar',
   };

   config development => +{};
   config production  => +{};

   1;

- common($hash)

   Define common config. This $hash is merged with specific environment config.

- config($env, $hash);

   Define environment config. This $hash is just enabled in $env environment.

- parent($env);

   Expand $env configuration to inherit it.

- load($filename);

   \`do $filename\` and expand it. This can be used following:

       # MyConfig.pm
       common +{
         API_KEY => 'Set in config.pl',
         API_SECRET => 'Set in config.pl',
         load('config.pl),
       };

       # config.pl
       +{
         API_KEY => 'XFATEAFAFASG',
         API_SECRET => 'ced3a7927fcf22cba72c2559326be2b8e3f14a0f',
       }

## EXPORT

You can specify default export name in config class. If you specify 'export' option as following:

   package MyConfig;
   use Config::ENV 'FOO_ENV', export => 'config';

   ...;

and use it with 'config' function.

   package Foobar;
   use MyConfig; # exports 'config' function

   config->param('...');

# METHODS

- config->param($name)

   Returns config variable named $name.

- $guard = config->local(%hash)

   This is for scope limited config. You can use this when you use other values in temporary. Returns guard object.

       is config->param('name'), 'original value';
       {
         my $guard = config->local(name => 'localized');
         is config->param('name'), 'localized';
       };
       is config->param('name'), 'original value';

- config->env

   Returns current environment name.

- config->current

   Returns current configuration as HashRef.

# AUTHOR

cho45 <[email protected]>

# SEE ALSO

# LICENSE

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.