Rails - Dec 2010 - 'No route matches' error with select_tag

Rails 3: I have a view books/:id/show.html.erb - in the view, I have a form
with a select tag to pick a template, that on dropdown should submit the
form which rerenders the page based on the selection:

 <%= form_tag book_path(@book) do %>
>
>  <%= select_tag "template[]",
>> options_for_select([["Template1","template1"],
["Template2", "template2"]]),
>> :value => (@template || ''template1''), :onchange
=> ''this.form.submit();'' %>
>
>  <%end%>
>
>
In my controller, I have
> @template = params[:template] || ''post''

In my routes, I have

resources :books, :only => [:show]


and rake routes indeed shows

 book GET    /books/:id(.:format)
> {:controller=>"books", :action=>"show"}


When I first navigate to this view, it all works fine and the view renders
as expected. If I select a different template from the dropdown, I get the
error:

No route matches ''books/1''


The funny thing is that the current page is exactly that route.

If I refresh the page, it renders with the default template (and not the
selected one).

Any help?

Thanks
Anand

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Never mind - I found it - I needed to add :method => :get to the
form_tag and it worked.

On Dec 22, 11:47 am, Anand Ramanathan
<rcan...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Rails 3: I have a view books/:id/show.html.erb - in the view, I have a form
> with a select tag to pick a template, that on dropdown should submit the
> form which rerenders the page based on the selection:
>
>  <%= form_tag book_path(@book) do %>
>
> >  <%= select_tag "template[]",
> >> options_for_select([["Template1","template1"],
["Template2", "template2"]]),
> >> :value => (@template || ''template1''),
:onchange => ''this.form.submit();'' %>
>
> >  <%end%>
>
> In my controller, I have
>
> > @template = params[:template] || ''post''
>
> In my routes, I have
>
> resources :books, :only => [:show]
>
> and rake routes indeed shows
>
>  book GET    /books/:id(.:format)
>
> > {:controller=>"books", :action=>"show"}
>
> When I first navigate to this view, it all works fine and the view renders
> as expected. If I select a different template from the dropdown, I get the
> error:
>
> No route matches ''books/1''
>
> The funny thing is that the current page is exactly that route.
>
> If I refresh the page, it renders with the default template (and not the
> selected one).
>
> Any help?
>
> Thanks
> Anand
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