On Oct 1, 3:28 am, Dan <[EMAIL PROTECTED]> wrote:
> Hello All
>
> I seem to be having a bit of a problem with separation of markup and
> code.
>
> I would like to output from 3 different models; railways, rail lines
> and stations a nested unordered list, so far i have got this to work:
>
> def view_transport(request):
> railway_list = Railway.objects.all()
> output = '<ul>'
> for rail in railway_list:
> output += '<li>'+rail.name+'</li><ul>'
> line_list = Line.objects.filter(railway=rail)
> for line in line_list:
> output += '<li>'+line.name+'</li><ul>'
> station_list =
> Station.objects.filter(line=line)
> for station in station_list:
> output += '<li>'+station.name+'</li>'
> output += '</ul>'
> output += '</ul>'
> output += '</ul>'
> return render_to_response('map/transport.html', {'var': output})
>
> This will output something like this:
>
> <ul><li>Tokyo Metro</li><ul><li>Ginza Line</li><ul><li>Shibuya</li></
> ul></ul><li>Japan Railway</li><ul></ul>
>
> This is fine for the output but I think there should be a better way
> to achieve this without having any markup in the view, i have seen the
> {{ var|unordered_list }} template tag but I do not have a clue how I
> would create a nested list in the view to pass to this template tag.
>
> I am a first time user of Python and Django, any help with this would
> be greatly appreciated, thanks in advance.
>
> -Dan
You need to use a ForeignKey (or ManyToManyField) in the model
definitions to relate your line, railway and station models together,
rather than doing explicit lookups each time.
Then in the template you'll be able to do something like this
(untested):
<ul>
{% for rail in railway%}
<li>{{rail.name}}</li>
<ul>
{% for line in railway.lines.all %}
<li>{{line.name}}</li>
<ul>
{% for station in line.stations.all %}
<li>{{station.name}}</li>
{% endfor %}
</ul>
{% endfor %}
</ul>
{% endfor %}
</ul>
You may also want to look into the Regroup template tag.
--
DR.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Django users" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/django-users?hl=en
-~----------~----~----~----~------~----~------~--~---
