From: laredotornado <laredotornado@...>
Date: 2008-01-24T15:04:57+09:00
Subject: What is the right way to access this param value?

Hi,

I have several fields on my page, distinguished by numbers in the id:

<% for i in 1 .. 5 %>
        <tr><td>
                <table>
                        <tr>
                                <td><%=
text_field_tag("prescription_number" + i.to_s, "") %></td>
                                <td><%= text_field_tag("description" +
i.to_s, "") %></td>
                        </tr>
                        <tr>
                                <td align="center">Prescription
Number</td>
                                <td align="center">Description</td>
                        </tr>
                </table>
        </td></tr>
<% end %>

However, when I try and access the values in my controller,

                i = 0
                while params[:prescription_number + i.to_s] != nil and
params[:description + i.to_s] != nil        # line 7
                        session[:prescription_number + i.to_s] =
params[:prescription_number + i.to_s]
                        session[:description + i.to_s] =
params[:description + i.to_s]
                        i += 1
                end

I get the error

 NoMethodError in OrderController#confirm
undefined method `+' for :prescription_number:Symbol
RAILS_ROOT: ./script/../config/..
Application Trace | Framework Trace | Full Trace
/usr/local/apache2/htdocs/easyrx/app/controllers/order_controller.rb:
7:in `confirm'

What is the correct way to access my parameter values?

Thanks, - Dave