Rails - Feb 2007 - How to add format to RESTful route link_to helper

Question: How do I tack a format (.xls) onto a REST url helper method
in link_to?

I have a route created from map.resources in my routes.rb file called
"comments".

map.resources :posts do |post|
    post.resources :comments
end

How do I use the auto-generated REST url helper methods in my link_to
to specify that I want all the comments for a particular post in XLS
format?


In my view:
# This shows all comments in (default) HTML - I want it to append .xls
to the URL
<%= link_to "Export to Excel", comments_url(@post) %>

How would I tell it to append .xls onto the generated link so that I
can catch this in my controller and respond with an Excel file?

Thanks,
Wes


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Hey

link_to "Export to Excel", formatted_comments_url(@post, :xls)

Trevor

On 26-Feb-07, at 8:12 AM, Wes wrote:
>
> Question: How do I tack a format (.xls) onto a REST url helper method
> in link_to?
>
> I have a route created from map.resources in my routes.rb file called
> "comments".
>
> map.resources :posts do |post|
>     post.resources :comments
> end
>
> How do I use the auto-generated REST url helper methods in my link_to
> to specify that I want all the comments for a particular post in XLS
> format?
>
>
> In my view:
> # This shows all comments in (default) HTML - I want it to append .xls
> to the URL
> <%= link_to "Export to Excel", comments_url(@post) %>
>
> How would I tell it to append .xls onto the generated link so that I
> can catch this in my controller and respond with an Excel file?
>
> Thanks,
> Wes
>
>
> 
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And for your future REST-related questions, the "RESTful Rails" cheat
sheet is extremely handy:

http://peepcode.com/products/restful-rails

(look for the "Download Free REST Cheat Sheet" link)

Sincerely,

Tom Lieber
http://AllTom.com/
http://GadgetLife.org/

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Thanks Trevor and Tom!


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One last question - is there a way to DRY this up a bit? The :template
parameter of the :xls format especially.

I''m using an XML builder to build an XML-based Excel file -
http://wiki.rubyonrails.org/rails/pages/HowToExportToExcel.

  def index
    @comments = Comment.find_all_by_post_id(@post)
    respond_to do |format|
      format.html
      format.xml  { render :xml => @commets.to_xml }
      format.xls  { render_without_layout :xml => @comments, :template
=> "comments/index.rxml" }
    end
  end

Thanks again guys!
Wes


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