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}”
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

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 S.

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-François.

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