On 26 September 2011 14:40, Di Zou <[email protected]> wrote:
> I am using Rails 2.3.8. I have a view with a list of mobile carriers. I
> want to assign a country to each mobile carrier. I do this by having a
> drop down list with available countries for the user to select.
>
> This is my form:
>
> <table>
> <tbody>
> <% form_for :HhActiveCarrier, @carriers, :url => { :action => "update"
It is not legal html to have a form inside a table, unless it is
entirely within one cell of the table. You may put the complete table
inside the form.
> } do |f| %>
> <% for carrier in @carriers %>
> <tr>
> <%= render :partial => "summary_detail", :locals => {:carrier =>
> carrier, :f => f} %>
> </tr>
> <% end %>
> </tbody>
> </table>
> <%= submit_tag "Update" %>
> <% end %>
>
> With my partial:
> <td class="tn"><%= h(carrier.name.to_s()) -%></td>
> <td class="sc"><%= h(carrier.country.to_s()) -%></td>
> <td class="sc"><%= select(:carrier, "country", @countries) -%></td>
>
> This is the controller where I define the variables:
>
> class ActiveCarriersController < ApplicationController
>
> def index
> @carriers = HhActiveCarrier.find(:all)
> for carrier in @carriers
> country = carrier["country"]
> if country.nil?
> carrier["country"] = "none"
> end
> end
> @countries = ["USA", "UK", "Canada"]
> end
>
> def update
> carrier = HhActiveCarrier.find(params[:name])
>
> redirect_to( :action => "index" )
> end
>
>
> When I click the "Update" button, I want to have the "country" of each
> HHActiveCarrier to be set. Right now this is the error I get:
>
> Couldn't find HhActiveCarrier without an ID
That means that you have attempted a find on that table without
specifying an id. Look at the line of code the error points to to
find out why. You can look in log/development.log to see what params
are being passed. If you still cannot see it the have a look at the
Rails Guide on debugging, in particular you could use ruby-debug to
break into your code and inspect the data and follow the flow.
Colin
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