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POPython+Pyramid+Mako: What is the difference between the context in event, context in view and context in template?
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  1. POPython+Pyramid+Mako: What is the difference between the context in event, context in view and context in template?
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    copied!<p>I've been trying hard to understand this, but can't quite put a finger on a precise documentation about it. I am quite confused about the different meaning of context in this Python Pyramid+Mako setup.</p> <p>Here is some code snippets (tell me if you need more <i>context</i>):</p> <pre><code>class Root(object): request = None def __init__(self, request): self.request = request @events.subscriber(events.BeforeRender) def add_renderer_globals(event): event[u'c'] = event[u'request'].tmpl_context print u"add_renderer_globals(): request.tmpl_context={0}".format(event[u'request'].tmpl_context) print u"add_renderer_globals(): context={0}".format(event[u'context']) @view.view_config(route_name='login', request_method='GET', renderer='login.mako') def login_get(context, request): print u"login_get(): context={0}".format(context) return {} [...] cfg = config.Configurator(root_factory=Root, package=MyPKG, settings=settings, session_factory=pyramid_beaker.session_factory_from_settings(settings), ) cfg.add_route(name='login', pattern='/login') cfg.scan() </code></pre> <p>and in my mako template, just to have an example, I only have:</p> <pre><code>Mako template context=${context}</code></pre> <p>So I would make a request and I get the following outputs from console or browser:</p> <pre><code>login_get(): context=&lt;MyPKG.Root object at 0x1523c90> add_renderer_globals(): request.tmpl_context=&lt;pyramid.request.TemplateContext object at 0x12fbc50> add_renderer_globals(): context=&lt;MyPKG.Root object at 0x1523c90> Mako template context=&lt;mako.runtime.Context object at 0x15a4950> </code></pre> <p>My question is: What are the differences, and what do you use them for? I'm also confused why semantically, I declared <b><code>root_factory</code></b><code>=MyPKG.Root</code> and it becomes <b><code>context</code></b><code>=MyPKG.Root</code> in my view and my subscriber.</p> <p>Thanks for any hint to help me understand.</p>
 

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