From: Jose vicente Ribera pellicer <joripel@...>
Date: 2008-11-20T06:59:29+09:00
Subject: help with partial

First and foremost sorry if my english is not the best.

In my application I have a view whit tickets and i can select it one to
one with a button.
The selected tickets go to another view that shows me the tickets i have
choosen. I want to export this selected tickets to excell.

My code is the next:
---------
routes.rb
----------
map.resources :tickets,  :collection => { :exportar=>:get,
            :auto_complete_for_ticket_province => :get,
           :auto_complete_for_ticket_city => :get,
           :auto_complete_for_ticket_zip => :get,
           :auto_complete_for_ticket_adquired_in => :get  }

----------------
tickets_controller
------------------
def add_to_cartticket
   #Add the selected ticket to cartticket, works fine

 end

def find_cartticket
#creates a new cartticket if whe iniciates the session, works fine
  end

def vaciar_cartticket
#deletes all the tickets added to carticket in the current session,
works fine
end

def expotar  #THIS METTOD SHOULD SELECT ALL THE CURRENT TICKETS IN
CARTICKET, i think works wroung
    @cartticket.items= Cartticket.items
    headers['Contenet-type']="aplication/vnd.ms-excel"
  headers['Contenet-Disposition']='attachment; filename="report.xls"'
      headers['Cache-Control']=''
end


------------------------------
add_to_cartticket.html.erb
-------------------------------
h2>Tickets seleccionados </h2>
<ul>
<% for item in @cartticket.items %>
<li><%=h item.id %></li>
<% end %>
</ul>
<br/>
<%= button_to "Vaciar" , :action => :vaciar_cartticket %>
<br/>

<%= link_to 'Exportar a Excel', exportar_tickets_url %> # MUST SHOW THE
SELECTED TICKETS ON .XLS COMPATIBLE



------------------------
exportar.html.erb
------------------------
<table border="1" id="doc">
  <tr>
    <td>hola</td>

    <td>adios</td>

    <td>dew</td>
  </tr>
  <%=render :partial=> "item", :collection=>@cartticket.items %>
  </table>
----------------------------------
exportar.html.erb
----------------------------------
<tr>
  <td> <%=item.user_id%> </td>
  <td> <%=item.contact%> </td>
  <td> <%=item.phone%> </td>

</tr>
----------------------------------
++++++++++++++++++++++++++++++++++

whe i try to link to "Exportar a Excel" Firefox shows me this error:

NoMethodError in Tickets#exportar

Showing tickets/exportar.html.erb where line #9 raised:

You have a nil object when you didn't expect it!
The error occurred while evaluating nil.items

Extracted source (around line #9):

6:
7:     <td>dew</td>
8:   </tr>
9:   <%=render :partial=> "item", :collection=>@cartticket.items %>
10:   </table>


**********************************************

Could somebody help me to find the error(s).....Thanks a lot
-- 
Posted via http://www.ruby-forum.com/.