That's fantastic it makes things a lot cleaner thanks for your help, I
got it working just by adding '_set' to the associated models like so:
<ul>
{% for rail in railway_list %}
<li>{{rail.name}}</li>
<ul>
{% for line in rail.line_set.all %}
<li>{{line.name}}</li>
<ul>
{% for station in line.station_set.all %}
<li>{{station.name}}</li>
{% endfor %}
</ul>
{% endfor %}
</ul>
{% endfor %}
</ul>
On Oct 1, 4:38 pm, Daniel Roseman <[EMAIL PROTECTED]>
wrote:
> 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.
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