PageTemplate integration for Zope 3
Project description
The zope.app.pagetemplate package integrates the Page Template templating system (zope.pagetemplate) into the Zope 3 application server. In particular, it provides:
a TALES engine implementation that uses Zope’s security system for checking access,
a ViewPageTemplateFile class that can be put on a browser page class as an attribute and will function as a callable method whose result is the rendered template, e.g.:
from zope.publisher import BrowserPage from zope.app.pagetemplate import ViewPageTemplateFile class HelloWorldPage(BrowserPage): __call__ = ViewPageTemplateFile('helloworld.pt')TALES namespace adapters for easy access to DublinCore metadata (e.g. obj/zope:title) and URL quoting (e.g. obj/@@absolute_url/url:quote).
Named Templates
We often want to be able to define view logic and view templates independently. We’d like to be able to change the template used by a form without being forced to modify the form.
Named templates provide templates that are registered as named view adapters. To define a named template, use the NamedTemplateImplementation constructor:
>>> from zope.app.pagetemplate import ViewPageTemplateFile
>>> from zope.app.pagetemplate.namedtemplate import (
... NamedTemplateImplementation)
>>> sample = ViewPageTemplateFile('tests/namedtemplate.pt')
>>> sample = NamedTemplateImplementation(sample)
Let’s define a view that uses the named template. To use a named template, use the NamedTemplate constructor, and give a template name:
>>> from zope.app.pagetemplate.namedtemplate import NamedTemplate
>>> class MyView:
... def __init__(self, context, request):
... self.context = context
... self.request = request
...
... __call__ = NamedTemplate('sample')
Normally, we’d register a named template for a view interface, to allow it to be registered for multiple views. We’ll just register it for our view class.
>>> from zope import component >>> component.provideAdapter(sample, [MyView], name='sample')
Now, with this in place, we should be able to use our view:
>>> class MyContent: ... def __init__(self, name): ... self.name = name>>> from zope.publisher.browser import TestRequest >>> print MyView(MyContent('bob'), TestRequest())(x=42) <html><body> Hello bob The URL is http://127.0.0.1 The positional arguments were () The keyword argument x is 42 </body></html> <BLANKLINE>
The view type that a named template is to be used for can be supplied when the named template is created:
>>> class MyView: ... def __init__(self, context, request): ... self.context = context ... self.request = request ... ... __call__ = NamedTemplate('sample2')>>> sample = ViewPageTemplateFile('tests/namedtemplate.pt') >>> sample = NamedTemplateImplementation(sample, MyView) >>> component.provideAdapter(sample, name='sample2') >>> print MyView(MyContent('bob'), TestRequest())(x=42) <html><body> Hello bob The URL is http://127.0.0.1 The positional arguments were () The keyword argument x is 42 </body></html> <BLANKLINE>
Changes
3.8.0 (2009-12-16)
Refactored nested macro test from a functional test into a unit test. This allowed to remove the last outside zope.app dependencies.
Fixed undeclared testing dependency on zope.app.component.
Copy trivial NoTraverser class from zope.app.publication to avoid a ZCML dependency on that package.
Correct testing dependency to point to zope.securitypolicy instead of its zope.app variant. The app version is no longer required since 3.4.1.
Removed the inline-evaluation extra referring to zope.app.interpreter. There’s no code or ZCML left pointing to that package.
3.7.1 (2009-05-27)
Restored zope.app.pagetemplate.engine module, using BBB imports from zope.pagetemplate.engine.
3.7.0 (2009-05-25)
Moved the engine module and associated testing machinery to zope.pagetemplate (version 3.5.0).
3.6.0 (2009-05-18)
Moved namedtemplate.* from zope.formlib here as it is more about a page template engine than a formular library. This also breaks some dependencies on zope.formlib.
Added doctests to long_description to show up on pypi.
3.5.0 (2009-02-01)
Use zope.container instead of zope.app.container.
3.4.1 (2008-07-30)
Substitute zope.app.zapi by direct calls to its wrapped apis. See http://launchpad.net/bugs/219302
Fix deprecation warning in ftesting.zcml: ZopeSecurityPolicy now lives in zope.securitypolicy.
3.4.0 (2007-09-28)
Initial release as standalone package.
Dependency on zope.app.interpreter moved to an extra [inline-evaluation]. It is only needed by zope.app.pythonpage, which is an oddity.
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