Version 1 (modified by 19 years ago) ( diff ) | ,
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This decorator makes views even easier:
Code:
def page(template=None, context=None, **decorator_args): def _wrapper(fn): def _innerWrapper(request, *args, **kw): context_dict = decorator_args.copy() g = fn(request, *args, **kw) if not hasattr(g, 'next'): #Is this a generator? Otherwise make her a tuple! g = (g,) for i in g: if isinstance(i, httpwrappers.HttpResponse): return i if type(i) == type(()): context_dict[i[0]] = i[1] else: context_dict.update(i) template_name = context_dict.get("template", template) context_instance = context_dict.get("context", context) return render_to_response(template_name, context_dict, context_instance) return _innerWrapper return _wrapper
Usage:
@page("polls/index") #The decorator function takes the template to be used. def index(request): latest_poll_list = polls.get_list(order_by=['-pub_date'], limit=5) yield {'latest_poll_list': latest_poll_list} yield {'title': 'Latest Poll Listing'} # We can yield at multiple places in the function.
Or one could yield the locals():
@page("polls/index", title='Latest Poll Listing') #Extra keyword arguments are sent in the context. def index(request): latest_poll_list = polls.get_list(order_by=['-pub_date'], limit=5) yield locals() #This yeilds all the local variables, which is 'latest_poll_list', and 'request'
You can set a template mid-stream with:
@page() #We don't say what template is needed yet. def index(request): latest_poll_list = polls.get_list(order_by=['-pub_date'], limit=5) if (latest_poll_list): template = 'polls/index' else: template = 'polls/nopolls' # We could also send 'context' which changes what context we use. yield locals()
You can yield a response to have it immediately returned:
@page('polls/index') def index(request): latest_poll_list = polls.get_list(order_by=['-pub_date'], limit=5) if (not latest_poll_list): yield httpwrappers.HttpResponseRedirect("/home/") #Since we don't have any latest polls, redirect to home. return #Don't yield anything else, we're done here. yield locals()
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