Rails - Jul 2008 - How to dynamically called RESTful route helpers

All,

I''m writing a generic application helper that will take an object and
then attempt to generate the name of the appropriate RESTful route
helper for POST and PUT.

Here it is so far:

  def get_form_url(object)
    tableized_name = object.class.name.tableize
    update_helper = "#{tableized_name}_url"

#This should return the correct URL based on whether the object is new
or not.
#But what should be in ????
    ????.send(''update_helper'', object)
  end

So, as an example, if I have an object of type "ServiceOption", then
the
update_helper will be "service_options_url", which assuming that there
is a
"map.resources :service_options" line in my routes.rb, will be a valid
URL helper for this object.

The trick is I need to dynamically call the URL helper and I don''t know
which object to send the message to.

What should ???? be above.

Thanks,
Wes
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

Correction:
>   def get_form_url(object)
>     tableized_name = object.class.name.tableize
>     update_helper = "#{tableized_name}_url"
> 
> #This should return the correct URL based on whether the object is new
> or not.
> #But what should be in ????
>     ????.send(update_helper, object)
>   end

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

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---

ANSWER:

This is what the method should look like:

def get_update_url(object)
  camel_case_object_name = object.class.name.underscore
  eval("#{camel_case_object_name}_url(object)")
end

My problem was the camel case version of the class name was plural 
(tableize vs. underscore inflection).

This seems to work fine.

Thanks,
Wes
-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en
-~----------~----~----~----~------~----~------~--~---