Rails - Aug 2006 - Newbie Question -- Override String functionality

Hello,

I would like to add functionality to the String class....where do I do
this?

Do I create a new model (if so, what do I call it?) and put something
like:

class String

	def my_new_string_method
	   blah blah
	end


end

Thanks for any pointers.

-- 
Posted via http://www.ruby-forum.com/.

cman wrote:
> Hello,
> 
> I would like to add functionality to the String class....where do I do
> this?
> 
> Do I create a new model (if so, what do I call it?) and put something like:
> 
> class String
> 	def my_new_string_method
> 	   blah blah
> 	end
> end
You don''t need to create a new model.  You can just paste that code to 
extend String into your config/environments.rb and you''ll be good to
go.
That''s a bit messy way to organize monkey patches, but it works. If you
get to the point where that becomes a pain, move the monkey patches into 
files in the lib directory and require them from environment.rb.

--
Josh Susser
http://blog.hasmanythrough.com/

-- 
Posted via http://www.ruby-forum.com/.

>> class String
>> 	def my_new_string_method
>> 	   blah blah
>> 	end
>> end
> 
> You don''t need to create a new model.  You can just paste that
code to
> extend String into your config/environments.rb and you''ll be good
to go.
> That''s a bit messy way to organize monkey patches, but it works.
If you
> get to the point where that becomes a pain, move the monkey patches into 
> files in the lib directory and require them from environment.rb.
Another option is to bundle your extension methods into a module, and 
include it into the String class.

Say:
module MyStringModule
  def my_foo
    "foo.#{to_s}"
  end
end

String.send(:include, MyStringModule)

Note the use of send, as the include method is private.

The nifty part of this implementation is that you get some information 
in the class about which modules it uses.

Type:
String.ancestors

and the list will include "MyStringModule"

-- 
Posted via http://www.ruby-forum.com/.

On Aug 10, 2006, at 8:16 PM, cman wrote:
> Hello,
>
> I would like to add functionality to the String class....where do I do
> this?
>
> Do I create a new model (if so, what do I call it?) and put something
> like:
>
> class String
>
> 	def my_new_string_method
> 	   blah blah
> 	end
>
>
> end
>
> Thanks for any pointers.
I usually put this sort of stuff in /lib and then require it from  
config/environment.rb
-Mat

Josh Susser wrote:
> cman wrote:
>> Hello,
>> 
>> I would like to add functionality to the String class....where do I do
>> this?
>> 
>> Do I create a new model (if so, what do I call it?) and put something
like:
>> 
>> class String
>> 	def my_new_string_method
>> 	   blah blah
>> 	end
>> end
> 
> You don''t need to create a new model.  You can just paste that
code to
> extend String into your config/environments.rb and you''ll be good
to go.
> That''s a bit messy way to organize monkey patches, but it works.
If you
> get to the point where that becomes a pain, move the monkey patches into 
> files in the lib directory and require them from environment.rb.
> 
> --
> Josh Susser
> http://blog.hasmanythrough.com/
I tried adding it to configs/environments.rb, and i get the following
error when booting WebBrick:  Invalid char ''\223'' in
expression, Invalid
char ''\224'' in expression.

Here is the code:
class String
  def capitalize_each
    self.split(? ?).each{|word| word.capitalize!}.join(? ?)
  end
  def capitalize_each!
    replace capitalize_each
  end
end



-- 
Posted via http://www.ruby-forum.com/.

> I tried adding it to configs/environments.rb, and i get the following
> error when booting WebBrick:  Invalid char ''\223'' in
expression, Invalid
> char ''\224'' in expression.
> Here is the code:
> class String
>   def capitalize_each
>     self.split(? ?).each{|word| word.capitalize!}.join(? ?)
>   end
>   def capitalize_each!
>     replace capitalize_each
>   end
> end
Not for certain on this, a likely cause is fancy quotes.  If you copy
and pasted this code from somewhere (like a blog), the double-quotes may
be fancy quotes.  Just try retyping the quotes in your text editor.

-- 
Posted via http://www.ruby-forum.com/.

>From an organisational perspective, I would think this would belong in
app/helper/application_helper.rb or perhaps an engine.

-- 
Cheers,
Hasan Diwan <hasan.diwan@gmail.com>
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