Breve template engine renderer for Pyramid Web Framework
Project description
Breve template engine renderer for Pyramid framework that uses asset specification to locate and load templates. Please use GitHub repository to access latest sources, report bugs and make feature requests
Installation
If you prefer pip:
$ pip install pyramid-breveOtherwise:
$ easy_install pyramid-breveUsage
Call config.include('pyramid_breve') in your WSGI applicatication factory function as following:
def main(global_config, **settings):
config = Configurator(settings=settings)
config.include('pyramid_breve')
config.add_static_view('static', 'static', cache_max_age=3600)
config.scan()
return config.make_wsgi_app()Another way is to add it to pyramid.includes in your INI-file:
[app:main]
pyramid.includes = pyramid_breveNow use it to render templates:
# using absolute asset specification
@view_config(route_name='home', renderer='my.lovely.app:templates/home.b')
def home_view(request):
return {real: 'content'}
# using relative asset specification
@view_config(route_name='login', renderer='templates/login.b')
def login_view(request):Configuration parameters
There are few configuration parameters that control rendering. They can be set in INI-file as following:
[app:main]
breve.tags = my_package.breve.tags
breve.doctype = html
# optionally, enforce default package name if pyramid-breve fails to detect it
breve.default_package = myappBreve renderer accepts following parameters:
- breve.default_package
Package name to use for resolving relative asset specifications, i.e. assets without explicit package name. Pyramid-breve tries to detect your application name and use it as default package name but it’s a tricky business and this parameter allowes to enforce default package name.
- breve.tags
This parameter will be resolved from dotted name string into Python object. Default is breve.tags.html.tags.
- breve.doctype
“<!DOCTYPE html>” or just “html”. Default is content of breve.tags.html.doctype.
- breve.xmlns
Will be sent as-is to the constructor. Default is content of breve.tags.html.xmlns.
- breve.fragment
This boolean variable will be used as fragment parameter to breve.Template.render call. This parameter can also be controlled by setting breve_fragment template variable as following:
@view_config(renderer='templates/home.b')
def home_view(request):
return {
# other variables used in template
'breve_fragment': True,
}Template variable breve_fragment overrides global breve.fragment setting. If none is set default is False.
Template file modification monitoring
Starting from version 0.6dev there is pyramid_breve.monitor.IFileMonitor interface. Implementations of that interface can be used to help pyramid_breve.renderer.TemplateLoader to get template file status without calling os.stat each time template is about to be rendered.
There is pyramid_breve.monitor.IntervalMonitor implementation of that interface which is used by BreveRendererFactory by default. That class simply caches os.stat value for fixed amount of time. Its constructor accepts single parameter interval that should be interval in seconds between invalidating cached values. This parameter can be configure via INI-file variable breve.monitor_interval like following:
[app:main]
# cache os.stat calls for 15 seconds
breve.monitor_interval = 15It is possible to implement custom IFileMonitor using more advanced techiques, like inotify or File Alteration Monitor features.
Lets create simple IFileMonitor implementation and configure pyramid_breve to use it.
First, we need to implement IFileMonitor interface:
# myapp/utils.py
from zope.interface import implements
from pyramid_breve.monitor import IFileMonitor
class DummyMonitor(object):
implements(IFileMonitor)
def last_modified(self, name):
# Never even look at real modification time and
# make it look like templates never change
return 0
monitor = DummyMonitor()Use breve.monitor variable in INI-file:
[app:main]
breve.monitor = myapp.utils.monitorRelease history Release notifications | RSS feed
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