util.py
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# -*- coding: utf-8 -*-
from django.conf.urls import defaults
from django.http import HttpResponseRedirect
def error_redirect(request, error, url='/'):
request.session['error'] = error
return HttpResponseRedirect(url)
def message_redirect(request, message, url='/'):
request.session['message'] = message
return HttpResponseRedirect(url)
def make_form(request, form_class, *args, **kwargs):
if request.POST.get('det', '') == form_class.base_fields['det'].initial:
return form_class(*args, data=request.POST, files=request.FILES, **kwargs)
else:
return form_class(*args, **kwargs)
def invert(l):
return dict((e,nr) for (nr,e) in enumerate(l))
def generator_slice(generator, count):
res = []
try:
for i in range(count):
res.append(generator.next())
except StopIteration:
pass
return res
def url(regex, view, **kwargs):
if 'name' not in kwargs:
kwargs['name'] = view
return defaults.url(regex, view, **kwargs)
def stringify_keys(dictionary):
return dict((keyword.encode('ascii'), value)
for keyword, value in dictionary.iteritems())
# copypasta ze standardowego modułu bisect
def bisect_left(a, x, lo=0, hi=None, cmp=None):
if cmp is None:
cmp = __builtins__.cmp
if lo < 0:
raise ValueError('lo must be non-negative')
if hi is None:
hi = len(a)
while lo < hi:
mid = (lo+hi)//2
if cmp(a[mid], x) < 0: lo = mid+1
else: hi = mid
return lo