Rails - Dec 2005 - Help with AJAX, controller receiving extra data

Hi there once again,

I''ve got stumped on something simple once again, I have the following
in a view:

<%= link_to_function ''Add another answer'', "new
Insertion.Bottom(''answerslist'',
$(''answer_form'').innerHTML)" %>

<ol id=''answerslist''></ol>

<span id=''answer_form''
style=''display:none;''>
        <li><%= text_field_tag "answers[]" %></li>
</span>

Which allows me to append new elements to answers[].
But the problem is that an empty string is always present at the end of
the array.  When its supposed to be empty (nothing added) there is
precisely one empty string, and when there''s more than one answer in
the
array, the last one is still an empty string.

At present I''m fixing this in the controller with the following:

    @answers = params[:answers]
    @answers.each{ |a| @question.answers << Answer.new( :description =>
a ) unless a == "" }

But it''s not exactly fixing the actual problem.

I''m not actually even sure if this is a bug on my behalf, or if its
just
the way its supposed to behave.

Can anyone put me right?

Cheers,
-v

-- 
keys:  http://codex.net/gpg.asc 

 Scientist: A left-over from the age of reason (pre 1982)

Vincent AE Scott wrote:
> <%= link_to_function ''Add another answer'', "new
> Insertion.Bottom(''answerslist'',
$(''answer_form'').innerHTML)" %>
> 
> <ol id=''answerslist''></ol>
> 
> <span id=''answer_form''
style=''display:none;''>
>         <li><%= text_field_tag "answers[]"
%></li>
> </span>
> 
> Which allows me to append new elements to answers[].
> But the problem is that an empty string is always present at the end of
> the array.  When its supposed to be empty (nothing added) there is
> precisely one empty string, and when there''s more than one answer
in the
> array, the last one is still an empty string.
Is your ''answer_form'' span inside your form or outside?  Make
sure
it''s outside.

-- 
We develop, watch us RoR, in numbers too big to ignore.

#if mrj /* Dec 13, 10:11 */
> Vincent AE Scott wrote:
> 
> ><%= link_to_function ''Add another answer'',
"new
> >Insertion.Bottom(''answerslist'',
$(''answer_form'').innerHTML)" %>
> >
> ><ol id=''answerslist''></ol>
> >
> ><span id=''answer_form''
style=''display:none;''>
> >        <li><%= text_field_tag "answers[]"
%></li>
> ></span>
> >
> >Which allows me to append new elements to answers[].
> >But the problem is that an empty string is always present at the end of
> >the array.  When its supposed to be empty (nothing added) there is
> >precisely one empty string, and when there''s more than one
answer in the
> >array, the last one is still an empty string.
> 
> Is your ''answer_form'' span inside your form or outside? 
Make sure
> it''s outside.
> 
#endif /* mrj-bzGI/hKkdgQnC9Muvcwxkw@public.gmane.org */


Ahhhh, Bingo!  Cheers for that, makes perfect sense now.  Gotta love
this list :)

-- 
keys:  http://codex.net/gpg.asc 

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 Recovery: Economic upturn entirely due to government action