On Sat, May 23, 2009 at 10:50 AM, Jani Tiainen <rede...@gmail.com> wrote:
>
> George Song kirjoitti:
> > On 5/23/2009 5:13 AM, Jani Tiainen wrote:
> >> I'm designing application (site) that is supposed to rely heavily on
> >> pluings.
> >>
> >> i didn't found much of references how I can create plugin that can
> >> provide something useful for my main template. something like:
> >>
> >> myplugin.py:
> >>
> >> provide_link = "<a href="{% url myplugin.views.linkaction
> %}">MyPlugin</a>"
> >>
> >> And then in my "core" application template:
> >> templates/mycore/mycore.html:
> >>
> >> {% for plugin in allplugins %}{{ plugin.provide_link }}{% endfor %}
> >>
> >> Any pointers to such apps or snippets that uses this (or similiar)
> >> tehcnique would be appreciated.
> >
> > Well, if you break down the problem, it really is just two things:
> >
> > 1. Registry
> > 2. Interface
> >
> > Registry
> > ========
> > The registry takes care of the part that when you create a new plugin,
> > it should be registered somehow as a plugin.
> >
> > Django itself is full of this pattern: models, template tags, filters,
> > admin sites, databrowse, serialization, etc. You can look to those for
> > ideas and inspirations. The most sophisticated being the models which
> > relies on a metaclass to do its implicit registration magic.
>
> This one I've solved by metaclass registration magic. And this was the
> easy part of whole plugin system.
>
> > Interface
> > =========
> > This is really internal to the specific plugin domain, so depending on
> > your needs, you can enforce it a number of ways: simple documentation of
> > the superclass, putting in a stub of NotImplemented, etc.
> >
>
> I believe in duck typing (documentation of the superclass) rather than
> explicitly forcing something.
>
> I'm just searching for reference implementations how to make something
> visible in my template.
>
> --
> Jani Tiainen
>
> >
>
I wrote a plugin type application about a year ago: while I don't know that
I would use it as is (I certainly haven't worked on it in months) it may be
interesting to look at: http://github.com/alex/django-plugins/tree/master
Alex
--
"I disapprove of what you say, but I will defend to the death your right to
say it." --Voltaire
"The people's good is the highest law."--Cicero
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