Rails - May 2006 - Please explain me this ruby code...

Hi all,
This is small code from typo 2.6.0''s "articles_helper.rb"
file
===============================  def author_link(article)
    if config[''link_to_author''] and article.user and 
article.user.email.to_s.size>0
      "<a 
href=\"mailto:#{article.user.email}\">#{article.user.name}</a>"
    elsif article.user and article.user.name.to_s.size>0
      article.user.name
    else
      article.author
    end
  end
===============================
In above code What is the meaning of
"config[''link_to_author'']"????
What is "config" here??
Please tell me.

Thanx in advance.
Prash

-- 
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> In above code What is the meaning of
"config[''link_to_author'']"????
> What is "config" here??
> Please tell me.
Well, it looks like a hash name config.  I''ve never used Typo, but I  
would venture to guess that it allows you to set some preferences  
which get stored in a hash named config.

-Derrick Spell

Yeah, basically it''s looking up a configuration setting in the admin
section that says, "does this user want to allow a link to their
email."  If the setting is set, then the anchor html is written out
otherwise the just the author''s name is written out.

Michael

Hello Prashant,
> This is small code from typo 2.6.0''s
"articles_helper.rb" file
> ===============================>   def author_link(article)
>     if config[''link_to_author''] and article.user and
> article.user.email.to_s.size>0
[...]
> ===============================>
> In above code What is the meaning of
"config[''link_to_author'']"????
> What is "config" here??
config is a method that returns the value of the global variable $config.
(it hides implementation, just like params() gives access to @params)
$config holds an Configuration instance. The Configuration class derives
from ConfigManager class that defines a [] method. So $config inherits
a [] method and can be seen as a hash-like object (not really, because
[]= method is not implemented). config[key] is a way to access
to default settings (by default config[''link_to_author''] is
false).

All details are in app/models/configuration.rb and app/models/config_manager.rb

    -- Jean-Fran?ois.

--
? la renverse.