thr3ads.net - Rails - eliminating trailing commas [Jan 2007]

If this information is useful, please help other people find it:
Share via:

Mike Dershowitz

2007-Jan-15 04:49 UTC

eliminating trailing commas

OK, this is a bit of a newbie question. While I''m just stunned at the
power of rails, how does ruby do with text transformations.
Specifically, i need to detect the last item in a text list and NOT put
in the trailing commas (whereas the others do it automatically - yes
it''s for tagging).

Can anyone point me in the right direction?

From my view:
    <% for tag in tags -%>
    <small><%= tag.name %></small>,&nbsp;
  <% end -%>

Thanks so much in advance!

Mike

-- 
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
-~----------~----~----~----~------~----~------~--~---

Thomas Mueller

2007-Jan-15 05:04 UTC

head link

Re: eliminating trailing commas

I''m myself new to Ruby and Rails, but I would probably try something
like this:

<small><%= (tags.collect {|t|
t.name}).join("</small>,&nbsp;<small>")
%></small>

Regards,
Thomas


2007/1/15, Mike Dershowitz
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>:>
> OK, this is a bit of a newbie question. While I''m just stunned at
the
> power of rails, how does ruby do with text transformations.
> Specifically, i need to detect the last item in a text list and NOT put
> in the trailing commas (whereas the others do it automatically - yes
> it''s for tagging).
>
> Can anyone point me in the right direction?
>
> From my view:
>     <% for tag in tags -%>
>     <small><%= tag.name %></small>,&nbsp;
>   <% end -%>
>
> Thanks so much in advance!
>
> Mike
>
> --
> 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
-~----------~----~----~----~------~----~------~--~---

David

2007-Jan-15 05:09 UTC

head link

Re: eliminating trailing commas

Mike Dershowitz wrote:> From my view:
>     <% for tag in tags -%>
>     <small><%= tag.name %></small>,&nbsp;
>   <% end -%>
Try:

  <% for tag in tags -%>
    <small><%= tag.name %></small><% if tag != tags.last
%>,<% end
%>&nbsp;
  <% 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
-~----------~----~----~----~------~----~------~--~---

Anthony Eden

2007-Jan-15 05:23 UTC

head link

Re: eliminating trailing commas

You might want to do this in a helper and then just call that helper
from your view. It would be reusable and would help keep your views
nice and tidy.

For example, place the following in application_helper.rb:

def tags
  tags.collect { |t| "<small>#{t.name}</small>"
}.join('',&nbsp;'')
end

V/r
Anthony Eden

On 1/15/07, David
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:>
> Mike Dershowitz wrote:
> > From my view:
> >     <% for tag in tags -%>
> >     <small><%= tag.name %></small>,&nbsp;
> >   <% end -%>
>
> Try:
>
>   <% for tag in tags -%>
>     <small><%= tag.name %></small><% if tag !=
tags.last %>,<% end
> %>&nbsp;
>   <% end -%>
>
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>

-- 
Cell: 808 782-5046
Current Location: Melbourne, FL

--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---

Alex Wayne

2007-Jan-15 07:01 UTC

head link

Re: eliminating trailing commas

Mike Dershowitz wrote:> OK, this is a bit of a newbie question. While I''m just stunned at
the
> power of rails, how does ruby do with text transformations.
> Specifically, i need to detect the last item in a text list and NOT put
> in the trailing commas (whereas the others do it automatically - yes
> it''s for tagging).
> 
> Can anyone point me in the right direction?
> 
> From my view:
>     <% for tag in tags -%>
>     <small><%= tag.name %></small>,&nbsp;
>   <% end -%>
> 
> Thanks so much in advance!
> 
> Mike
You want to use Array#join.  This will insert some text between array 
elements and return a string.

<%= tags.collect { |tag| "<small>#{tag.name}</small>"
}.join('', '') %>

This creates an array of tag names, with html around it, and then join 
the elements with a comma and space.

A cleaner way may involve a helper though.

  def tag_list(tags)
    names = tags.collect do |tag|
      content_tag(''small'', tag.name)
    end
    names.join('', '')
  end

Then instead of that big ugly RHTML tag there, you just have:

  <%= tag_list(tags) %>

-- 
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
-~----------~----~----~----~------~----~------~--~---

Daniel Waite

2007-Jan-15 08:35 UTC

head link

Re: eliminating trailing commas

Alex Wayne wrote:> A cleaner way may involve a helper though.
> 
>   def tag_list(tags)
>     names = tags.collect do |tag|
>       content_tag(''small'', tag.name)
>     end
>     names.join('', '')
>   end
> 
> Then instead of that big ugly RHTML tag there, you just have:
> 
>   <%= tag_list(tags) %>

Slightly more clean:

def tag_list(tags)
  tags.map { |tag| content_tag(''small'', tag.name)
}.join('', '')
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
-~----------~----~----~----~------~----~------~--~---

Brian D. Burns

2007-Jan-15 09:00 UTC

head link

Re: eliminating trailing commas

Just to add one more...
Since you don''t appear to be linking each element,
how about to_sentence from Active Support?
>> tags = %w{shoes shirts socks pants}=> ["shoes", "shirts", "socks",
"pants"]>> tags.to_sentence=> "shoes, shirts, socks, and pants"

<small><%= tags.to_sentence %></small>

Or, without the "and">> tags.to_sentence(:connector => nil)=> "shoes, shirts, socks,  pants"
Although, this inserts an extra space
before the last element for some reason.

- Brian


--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---

Rails - Jan 2007 - eliminating trailing commas

eliminating trailing commas

Re: eliminating trailing commas

Re: eliminating trailing commas

Re: eliminating trailing commas

Re: eliminating trailing commas

Re: eliminating trailing commas

Re: eliminating trailing commas