megrok.resourceviewlet 0.2

Setup

Let’s import and init the necessary work environment:

>>> import grokcore.component as grok
>>> from grokcore import view, viewlet
>>> from zope.app.wsgi.testlayer import Browser

>>> browser = Browser()
>>> browser.handleErrors = False

Library

We first declare a resource. We’ll include it in our page:

>>> from fanstatic import Resource, Library
>>> myLibrary = Library('test_library', 'ftests/resources')
>>> Thing = Resource(myLibrary, 'thing.js')

This step is done by an entry point. For the testing, we do it by hand:

>>> from zope.fanstatic.zcml import create_factory
>>> from zope.component import getGlobalSiteManager
>>> from zope.publisher.interfaces.browser import IBrowserRequest
>>> from zope.interface import Interface

>>> resource_factory = create_factory(myLibrary)
>>> getGlobalSiteManager().registerAdapter(
...      resource_factory, (IBrowserRequest,), Interface, myLibrary.name)

Components

To demonstrate our resource viewlet, we first need a page to render. This page contains a content provider named ‘resources’:

>>> from zope.interface import Interface

>>> class Index(view.View):
...   view.require("zope.Public")
...   view.context(Interface)
...
...   template = view.PageTemplate("""<html><head>
...     <tal:resources replace='provider:resources' />
...   </head></html>""")

>>> grok.testing.grok_component('index', Index)
True

>>> from megrok.resourceviewlet import ResourcesManager

>>> class Resources(ResourcesManager):
...   viewlet.context(Interface)

>>> grok.testing.grok_component('resources', Resources)
True

>>> from megrok.resourceviewlet import ResourceViewlet

>>> class SomeViewlet(ResourceViewlet):
...   viewlet.context(Interface)
...   resources = [Thing]

>>> grok.testing.grok_component('viewlet', SomeViewlet)
True

Rendering

Rendering our page should render the ResourcesManager and therefore, include our resource:

>>> browser.open('http://localhost/@@index')
>>> print browser.contents
<html><head>
  <script type="text/javascript"
   src="http://localhost/fanstatic/test_library/thing.js"></script>
</head></html>

It works ! Enjoy.

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