On 12/7/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> The problem is most of the templates have something that adjusts
> per-user
Perhaps I wasn't clear.
Unless you're changing the contents of the template files themselves
at runtime, the actual contents of the response to the user is totally
dependent on context at the time you call render.
Caching the loaded template (i.e. the result of the get_template call)
does not preclude varying responses per request.
> On Dec 7, 9:57 pm, "Jeremy Dunck" <[EMAIL PROTECTED]> wrote:
> > Something like this might help:
> >
> > template_name = "detail.html"
> > t = cache.get(template_name)
> > if not t:
> > t = loader.get_template(template_name)
> > cache.set(template_name, t, 60*60)#1 hour
That little bit above throws the tree of template Nodes into cache.
This is safe to do as long as your're not changing the contents of,
say, bone.html, very often.
> > t.render(c)
This little bit, assuming c is a Context object, renders the template
tree based on the contents of your context object, which can result in
radically different responses, depending on what the Node tree does.
So, tiny example (warning, using old dj codebase, ymmv):
======
from django.core import template
In [7]: dc=template.Context({'user':'dcramer'})
In [8]: jd=template.Context({'user':'jdunck'})
...
In [15]: ts = """
....: {% now "r" %}<br/> {{ user }}
....: """
In [16]: t=template.Template(ts)
In [17]: t.render(dc)
Out[17]: '\nFri, 8 Dec 2006 07:06:14 +1800<br/> dcramer\n'
In [18]: t.render(jd)
Out[18]: '\nFri, 8 Dec 2006 07:06:21 +1800<br/> jdunck\n'
=====
As a side note, you do need to be careful about what you throw into
cache in situations like this, because there are limitations to what
can be pickled. If your loaded template (Node tree) includes
generators (or other scope closures), Bad Things happen.
In [1]: def x(y):
...: i=0
...: while i<y:
...: yield i
...: i+=1
...:
In [2]: import pickle
In [3]: z=x(5)
In [4]: z.next()
Out[4]: 0
In [5]: pickle.dumps(z)
---------------------------------------------------------------------------
exceptions.TypeError
...
TypeError: can't pickle generator objects
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