Rails - Feb 2008 - What is the right way to name my local variable in my partial?

Hi,

I have this invocation of a partial:

<%= render :partial => ''summary_line_item'', @collection
=>
@ec_order.ec_line_items %>

I thought just by naming the partial "summary_line_item", each item
from the collection would be named "summary_line_item".  But I get
this error:

 NoMethodError in Order#summary
Showing order/_summary_line_item.rhtml where line #12 raised:
You have a nil object when you didn''t expect it!
The error occurred while evaluating nil.prescription_number

Here''s the code for the partial

=====================Begin _summary_line_item.rhtml
=====================<div class="ec_line_item"
style="width:100%">
           <!-- stuff -->
           <div
class="summaryField"><%summary_line_item.prescription_number
%></div>
           <div class="summaryField"><%=
summary_line_item.description
%></div>
           <!-- more stuff -->
</div>
======================End _summary_line_item.rhtml
======================
Any idea how to properly name that loop variable in the partial?  I
can name it anything other than "ec_line_item", b/c I already have
another partial named "_ec_line_item.rhtml". - Dave




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On Thu, Feb 14, 2008 at 7:44 PM,
laredotornado-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org
<laredotornado-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org> wrote:
>   NoMethodError in Order#summary
>  Showing order/_summary_line_item.rhtml where line #12 raised:
>  You have a nil object when you didn''t expect it!
>  The error occurred while evaluating nil.prescription_number
>
>  Here''s the code for the partial
>
>  =====================Begin _summary_line_item.rhtml
>  =====================>  <div class="ec_line_item"
style="width:100%">
>            <!-- stuff -->
Perhaps it''s something in the above <!-- stuff -->
>            <div class="summaryField"><%> 
summary_line_item.prescription_number %></div>
...
>  Any idea how to properly name that loop variable in the partial?  I
>  can name it anything other than "ec_line_item", b/c I already
have
>  another partial named "_ec_line_item.rhtml". - Dave
Having the other partial shouldn''t restrict you, we''re talking
about
local variables here.

-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/

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I guess I should take a step back.  Given this from my summary.rhtml
file, how could I take the loop and convert it into a partial?


<% for summary_line_item in @ec_order.ec_line_items %>
<div class="ec_line_item" style="width:100%">
<table cellpadding="0" cellspacing="0"
border="0" width="100%">
     <tr><td  class="lineItemHeader"
style="background-image:url(''<%image_path(''/images/INSIDE_MENU_BAR-GreyRepeat_SM.gif'');
%>'');">Prescription #<span
class="prescriptionNumber">#</span></td></
tr>
     <tr><td style="background-color:#FFFFCC;">
       <table cellpadding="3" cellspacing="0"
border="0" width="100%">
         <tr>
           <td rowspan="2" valign="middle"
align="center"><%image_tag
''/images/RxICON_Cream.gif'', options = {:alt =>
""} %></td>
           <td align="center"
class="summaryFieldHeader">Refill
Number</td>
           <td align="center"
class="summaryFieldHeader">Description</
td>
         </tr>
         <tr>
           <td align="center"
class="summaryField"><%summary_line_item.prescription_number
%></td>
           <td align="center"
class="summaryField"><%summary_line_item.description
%></td>
         </tr>
       </table>
     </td></tr>
</table>
</div>
<% end %>



Thanks, - Dave


On Feb 15, 6:41 am, "Rick DeNatale"
<rick.denat...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On Thu, Feb 14, 2008 at 7:44 PM,
laredotorn...-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org
>
> <laredotorn...-8iDLEspWrrZBDgjK7y7TUQ@public.gmane.org> wrote:
> >   NoMethodError in Order#summary
> >  Showing order/_summary_line_item.rhtml where line #12 raised:
> >  You have a nil object when you didn''t expect it!
> >  The error occurred while evaluating nil.prescription_number
>
> >  Here''s the code for the partial
>
> >  =====================Begin _summary_line_item.rhtml
> >  =====================> >  <div
class="ec_line_item" style="width:100%">
> >            <!-- stuff -->
>
> Perhaps it''s something in the above <!-- stuff -->
>
> >            <div class="summaryField"><%> >
 summary_line_item.prescription_number %></div>
>
> ...
>
> >  Any idea how to properly name that loop variable in the partial?  I
> >  can name it anything other than "ec_line_item", b/c I
already have
> >  another partial named "_ec_line_item.rhtml". - Dave
>
> Having the other partial shouldn''t restrict you, we''re
talking about
> local variables here.
>
> --
> Rick DeNatale
>
> My blog on Rubyhttp://talklikeaduck.denhaven2.com/
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Ahh, I think I see your problem now:

<%= render :partial => ''summary_line_item'', @collection
=>
@ec_order.ec_line_items %>

should be:

<%= render :partial => ''summary_line_item'', :collection
=>
@ec_order.ec_line_items %>


-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/

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As a commercial that I''ve seen would say ... brilliant!  Thanks, -

On Feb 15, 11:05 am, "Rick DeNatale"
<rick.denat...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Ahh, I think I see your problem now:
>
> <%= render :partial => ''summary_line_item'',
@collection =>
> @ec_order.ec_line_items %>
>
> should be:
>
> <%= render :partial => ''summary_line_item'',
:collection =>
> @ec_order.ec_line_items %>
>
> --
> Rick DeNatale
>
> My blog on Rubyhttp://talklikeaduck.denhaven2.com/
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