Rails - Oct 2009 - Hard to do: Creating routes that are permalinks with context info.

Simple permalinks, yes, like:

  /weather/report/10/3

But I do *not* see how to create permalinks for large collections of
documents, like:

  /france/weather/report/10/3
  /europe/weather/report/10/3

There''s one big difference between the first and second example:  In
the first, all the parameters would be attributes of the one
ActiveRecord object (the weather report from 10/3.)

But in the second examples, information from two sources is pulled
from:  the AR object as above, plus a sort of application context ---
the user is focussing on France or Europe.  I haven''t figured out how
to generate these kinds of URLs yet.  Anyone know how?  Here''s what I
have so far:

  map.weather_report ''/:location/weather/report/:month/:day''
...

This nicely (1) sets an @location variable in the app so that the
entire interface is tailored for the user, and (2) instantiates
the :month/:day weather report, filtered by @location.

But my problem:  I don''t see how to use weather_report_path to
generate this URL.  Given a report object, and @location, I''ve tried
variations of:

  weather_report_path(report, @location)

...without success.

Any ideas?
Thanks!

On Oct 22, 10:48 am, Robb
<robb.shec...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Simple permalinks, yes, like:
>
>   /weather/report/10/3
>
> But I do *not* see how to create permalinks for large collections of
> documents, like:
>
>   /france/weather/report/10/3
>   /europe/weather/report/10/3
Hmm; it looks like one solution might be to use nested resources,
which would unfortunately require a longer url like this:

  /locations/france/weather/report/10/3

weather_report_url(:location => ''france'', :month => 10,
:day => 3)

On Oct 22, 11:23 am, Robb
<robb.shec...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On Oct 22, 10:48 am, Robb
<robb.shec...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> > Simple permalinks, yes, like:
>
> >   /weather/report/10/3
>
> > But I do *not* see how to create permalinks for large collections of
> > documents, like:
>
> >   /france/weather/report/10/3
> >   /europe/weather/report/10/3
>
> Hmm; it looks like one solution might be to use nested resources,
> which would unfortunately require a longer url like this:
>
>   /locations/france/weather/report/10/3

On Oct 22, 11:47 am, sax
<s...-c5KP9hz/kbxwMgcQ4+lbG0B+6BGkLq7r@public.gmane.org>
wrote:
> weather_report_url(:location => ''france'', :month =>
10, :day => 3)
>
Ummhmm, I can grab out the attributes of my Report object. And I guess
I can use that with link_to in a template:

  link_to(''the report'', weather_report_url(:location =>
@loc, :month
=> r.month, :day => r.day))

...I was hoping to get to something more like:

  link_to(''the report'', @loc, r)

On Oct 22, 2009, at 5:04 PM, Robb wrote:
> On Oct 22, 11:47 am, sax
<s...-c5KP9hz/kbxwMgcQ4+lbG0B+6BGkLq7r@public.gmane.org> wrote:
>> weather_report_url(:location => ''france'', :month
=> 10, :day => 3)
>
> Ummhmm, I can grab out the attributes of my Report object. And I guess
> I can use that with link_to in a template:
>
>  link_to(''the report'', weather_report_url(:location =>
@loc, :month
> => r.month, :day => r.day))
>
> ...I was hoping to get to something more like:
>
>  link_to(''the report'', @loc, r)

You''ll never get it quite that simple unless you write your own helper.

module MyHelper
   def weather_link_to(text, location, report, options={})
     link_to(text, weather_report_path(:location => location,
                                       :month => report.month,
                                       :day => report.day),
             options)
   end
end

<%= weather_link_to(''the report'', @loc, r) %>

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob-xa9cJyRlE0mWcWVYNo9pwxS2lgjeYSpx@public.gmane.org