Rails - Jan 2006 - Trying to understand the difference between similariterators

No I have tried that. It gives me just this output   # 

-----Original Message-----
From: rails-bounces@lists.rubyonrails.org
[mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of Pat Maddox
Sent: Friday, January 27, 2006 2:48 PM
To: rails@lists.rubyonrails.org
Subject: Re: [Rails] Trying to understand the difference between
similariterators

Well first of all, when you''re iterating through a block, you
don''t need
to have an end.  In fact it should give you some kind of error. 
Secondly, <% just evals a statement, <%= renders the output.  So your
loop should be:

<td><%= @student.addresses.each {|address| "Address:
#{address.addr1}<br/>"} %> </td>

Pat



On 1/27/06, Silvy@funmail.com <Silvy@funmail.com>
wrote:
> What''s the difference between these two?
> Objective:
> Trying to display the addresses of the students that has
"has_many"
> relations with addresses
>
> <td><% @student.addresses.each {|address| "Address:
> #{address.addr1}<br/>"} %> </td>   ****** did not work
> <% end %>
>
> This code worked:
> <td><% @student.addresses.each do |address|%>
>      <%= address.addr1 %><br/>
> <% end %>
>
> Any comments appreciated.
> Thanks
> Silvy Mathews
>
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
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Silvy@funmail.com wrote:
> No I have tried that. It gives me just this output   # 
> 
That''s because the <%= %> construct outputs the return value of
the
expression inside it.  The .each method actually returns the object
it''s
called on - which in this case would be @student.addresses, which isn''t
a string...  Try:

<td><%= @student.addresses.inject{|s, address| s + "Address: 
#{address.addr1}<br />"} %></td>

-- 
Alex

Alex Young wrote:
> Silvy@funmail.com wrote:
>> No I have tried that. It gives me just this output   #
> That''s because the <%= %> construct outputs the return value
of the
> expression inside it.  The .each method actually returns the object
it''s
> called on - which in this case would be @student.addresses, which
isn''t
> a string...  Try:
> 
> <td><%= @student.addresses.inject{|s, address| s + "Address: 
> #{address.addr1}<br />"} %></td>
> 
Oops...  That should probably be

<td><%= @student.addresses.inject(''''){|s, address| s
+ "Address:
#{address.addr1}<br />"} %></td>

-- 
Alex