Generate a tree List...
Jens Diemer
How can i make a recursive loop in a template???
In jinja i can use the tag "recurse":
http://wsgiarea.pocoo.org/jinja/docs/loops.html#recursion
Here a jinja example:
------------------------------------------------------------------------
context = {'sitemap': [{'href': u'/Index/',
'subitems': [{'href': u'/Index/PhpBBadmin/',
'title': u'phpBBadmin'}],
'title': u'index'},
{'href': u'/ExamplePages/',
'subitems': [{'href': u'/ExamplePages/TextileExample/',
'title': u'complete tinyTextile examples'},
{'href': u'/ExamplePages/Testpage/',
'title': u'a testpage ;)'},
{'href': u'/ExamplePages/SourceCode/',
'title': u'SourceCode'},
{'href': u'/ExamplePages/Contact/',
'title': u'contact'},
{'href': u'/ExamplePages/SiteMap/',
'title': u'SiteMap'}],
'title': u'example pages'},
{'href': u'/Test/', 'title': u'test'}]}
template = """
<h1>Sitemap</h1>
<ul>
{% for item in sitemap %}
<li>
<a href="{{ item.href }}">{{ item.title|escapexml }}</a>
{% if item.subitems %}
<ul>{% recurse item.subitems %}</ul>
{% endif %}
</li>
{% endfor %}
</ul>
"""
------------------------------------------------------------------------
recurse used the for loop again with the subitems. So i can easy create
a recursion.
How can i do this in django?
--
Mfg.
Jens Diemer
----
CMS in pure Python CGI: http://www.pylucid.org
Joseph Heck
Check out the docs at http://www.djangoproject.com/documentation/templates_python/ for a good overview. Making one is really pretty straightfoward.
Jeremy Dunck
> recurse used the for loop again with the subitems. So i can easy create
> a recursion.
While I agree with Joseph that writing your own template tag to handle
this is pretty easy, it's worth noting that Jinja spun off of Django's
templating specifically to add things like recursion.
It won't be added to Django core, AFAIK.
Jens Diemer
> Check out the docs at
> http://www.djangoproject.com/documentation/templates_python/ for a good
> overview. Making one is really pretty straightfoward.
I don't think this is so easy :(
I found this:
https://svn.greenpeace.org/projects/custard/browser/production/trunk/melt/apps/custard/templatetags/customtags.py
But i don't know how i can use this.
Jeremy Dunck schrieb:
> It won't be added to Django core, AFAIK.
Why?
Everyone need this function, if you would like to build a sitemap with a
tree.
I think this feature should not be missing in the core. It's a very
useful function
Jeremy Dunck
>
> Joseph Heck schrieb:
> > Check out the docs at
> > http://www.djangoproject.com/documentation/templates_python/ for a good
> > overview. Making one is really pretty straightfoward.
>
> I don't think this is so easy :(
>
> I found this:
> https://svn.greenpeace.org/projects/custard/browser/production/trunk/melt/apps/custard/templatetags/customtags.py
>
> But i don't know how i can use this.
Yeah, I'd be careful about the license. I don't see one.
You might contact one of these folks:
https://svn.greenpeace.org/projects/custard/browser/doc/copyright.html
But it looks like something like this would do:
x = { 'value':1, 'children': [
{ 'value': 2, 'children': []},
{'value' : 3, 'children': [
{ 'value':4, 'children':[] }
]}
]}
----
{% recurse through children as node starting with x %}
...do something with node.
{% endrecurse %}
> Jeremy Dunck schrieb:
> > It won't be added to Django core, AFAIK.
> Why?
> Everyone need this function, if you would like to build a sitemap with a
> tree.
No, not everyone needs this.
http://www.djangobook.com/en/beta/chapter04/#cn210
If you do, consider using Jinja with Django. The HttpResponse just
wants a string which Jinja is (of course) capable of creating.
> I think this feature should not be missing in the core. It's a very
> useful function
As a programmer, I agree. But the Django templating language is not
only for me, nor am I limited to the Django templating language.
Jens Diemer
>> I found this:
>> https://svn.greenpeace.org/projects/custard/browser/production/trunk/melt/apps/custard/templatetags/customtags.py
>>
>> But i don't know how i can use this.
>
> Yeah, I'd be careful about the license. I don't see one.
> You might contact one of these folks:
> https://svn.greenpeace.org/projects/custard/browser/doc/copyright.html
No problem, the source is under the GPL and PyLucid is under GPL, too ;)
> But it looks like something like this would do:
>
> x = { 'value':1, 'children': [
> { 'value': 2, 'children': []},
> {'value' : 3, 'children': [
> { 'value':4, 'children':[] }
> ]}
> ]}
> ----
> {% recurse through children as node starting with x %}
> ...do something with node.
> {% endrecurse %}
Thank you for your help! Now, i try it to use it ;)
Jens Diemer
> Jeremy Dunck schrieb:
>>> I found this:
>>> https://svn.greenpeace.org/projects/custard/browser/production/trunk/melt/apps/custard/templatetags/customtags.py
>>>
>>> But i don't know how i can use this.
>> Yeah, I'd be careful about the license. I don't see one.
>> You might contact one of these folks:
>> https://svn.greenpeace.org/projects/custard/browser/doc/copyright.html
>
> No problem, the source is under the GPL and PyLucid is under GPL, too ;)
Sorry i forgot the link to the license:
https://svn.greenpeace.org/projects/custard/browser/production/trunk/melt/COPYING
Jens Diemer
>> I found this:
>> https://svn.greenpeace.org/projects/custard/browser/production/trunk/melt/apps/custard/templatetags/customtags.py
>>
>> But i don't know how i can use this.
Hm :(
The code is for an older django version.
Jeremy Dunck
>
> Jeremy Dunck schrieb:
> >> I found this:
> >> https://svn.greenpeace.org/projects/custard/browser/production/trunk/melt/apps/custard/templatetags/customtags.py
> >>
> >> But i don't know how i can use this.
>
> Hm :(
> The code is for an older django version.
If you want recursion in templates, why not just use Jinja?
Jens Diemer
> If you want recursion in templates, why not just use Jinja?
Jinja is super cool. But I would like to keep the PyLucid package small.
I thought with django i would choose a full features framework :(
Jeremy Dunck
It works pretty well for me and many others. Writing a template tag
is a reasonable solution, IMHO. :-/