start of refactoring as a standalone application

git-svn-id: https://django-dbtemplates.googlecode.com/svn/trunk@9 cfb8ba98-e953-0410-9cff-959ffddf5974

committer: leidel <leidel@cfb8ba98-e953-0410-9cff-959ffddf5974>

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extra : convert_revision : aa5badb83ef1c6f30681f6f240eebc5e98354797
This commit is contained in:
leidel 2007-07-20 14:26:39 +00:00
parent 7c5c4b3b4c
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Copyright (c) 2007, Jannis Leidel
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of the author nor the names of other
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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Database template loader for Django
===================================
This is a basic database template loader for Django which uses a m2m
relationship to provide a site centric template loading.
How to use it in your own django application
============================================
0. Get the source from the subversion repository
1. Copy the "template" directory to your django project directory
2. Edit your settings.py:
# Add ``myapp.template`` to the ``INSTALLED_APPS`` where "myapp" is the
name of your django project
# Check if ``django.contrib.sites`` and ``django.contrib.admin`` are in
``INSTALLED_APPS`` and add if necessary
It should look something like this:
INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.admin',
'django.contrib.flatpages',
'myapp.blog',
'myapp.template',
)
# Add ``myapp.template.loaders.database.load_template_source`` to the
``TEMPLATE_LOADERS`` where "myapp" is the name of your Django project
It should look something like this:
TEMPLATE_LOADERS = (
'django.template.loaders.filesystem.load_template_source',
'django.template.loaders.app_directories.load_template_source',
'myapp.template.loaders.database.load_template_source',
)
3. Sync your database via shell (hint: "./manage.py syncdb" within project dir)
4. Restart your Django server
5. Go to the admin interface and add templates by filling the ``name`` field
with filename like identifiers, for example "blog/entry_list.html"
6. Use it with ``Flatpages``, ``Generic views`` and your own custom views
What? Hm, doesn't work here. || Aaah nice, BUT...
=================================================
Please leave your questions and messages on the designated Google Code site:
http://code.google.com/p/django-databasetemplateloader/

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from django.template import TemplateDoesNotExist
from django.contrib.sites.models import Site
from django.conf import settings
from template.models import Template
try:
site = Site.objects.get_current()
except:
site = None
def load_template_source(template_name, template_dirs=None):
"""
Loader which fetches the template content from the database depending on
the current ``Site``.
"""
if site is not None:
try:
t = Template.objects.get(name__exact=template_name, sites__pk=site.id)
return (t.content, 'db:%s:%s' % (settings.DATABASE_ENGINE, template_name))
except:
pass
raise TemplateDoesNotExist, template_name
load_template_source.is_usable = True

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"""
Creates the default database template objects.
Don't know if it works.
"""
from django.dispatch import dispatcher
from django.db.models import signals
from django.contrib.sites.models import Site
from template.models import Template
from template import models as template_app
def create_default_templates(app, created_models, verbosity):
try:
site = Site.objects.get_current()
except Site.DoesNotExist:
site = None
if site is not None:
if Template in created_models:
if verbosity >= 2:
print "Creating example database templates for error 404 and error 500"
template404 = Template(name="404.html",content="""
{% load i18n %}<h2>{% trans 'Page not found' %}</h2>
<p>{% trans "We're sorry, but the requested page could not be found." %}</p>""")
template404.save()
template404.sites.add(site)
template500 = Template(name="500.html",content="""{% load i18n %}
<h1>{% trans 'Server Error <em>(500)</em>' %}</h1>
<p>{% trans "There's been an error." %}</p>""")
template500.save()
template500.sites.add(site)
dispatcher.connect(create_default_templates, sender=template_app, signal=signals.post_syncdb)

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# -*- coding: utf-8 -*-
from django.db import models
from django.template import loader, Context
from django.core import validators
from django.contrib.sites.models import Site
from django.utils.translation import gettext_lazy as _
@ -25,4 +27,30 @@ class Template(models.Model):
search_fields = ('name','content')
def __str__(self):
return self.name
return self.name
__test__ = {'API_TESTS':"""
>>> test_site = Site.objects.get(pk=1)
>>> test_site
<Site: example.com>
>>> t1 = Template(name='base.html', content="<html><head></head><body>{% block content %}Welcome at {{ title }}{% endblock %}</body></html>")
>>> t1.save()
>>> t1.sites.add(test_site)
>>> t1
<Template: base.html>
>>> t2 = Template(name='sub.html', content='{% extends "base.html" %}{% block content %}This is {{ title }}{% endblock %}')
>>> t2.save()
>>> t2.sites.add(test_site)
>>> t2
<Template: sub.html>
>>> Template.objects.filter(sites=test_site)
[<Template: base.html>, <Template: sub.html>]
>>> t2.sites.all()
[<Site: example.com>]
>>> from django.contrib.dbtemplates.loader import load_template_source
>>> loader.template_source_loaders = [load_template_source]
>>> loader.get_template("base.html").render(Context({'title':'MainPage'}))
'<html><head></head><body>Welcome at MainPage</body></html>'
>>> loader.get_template("sub.html").render(Context({'title':'SubPage'}))
'<html><head></head><body>This is SubPage</body></html>'
"""}