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from django import http
from django.db import models
from django.contrib.databrowse.datastructures import EasyModel
from django.contrib.databrowse.sites import DatabrowsePlugin
from django.shortcuts import render_to_response
from django.utils.text import capfirst
from django.utils.encoding import force_unicode
from django.utils.safestring import mark_safe
from django.views.generic import date_based
from django.utils import datetime_safe
class CalendarPlugin(DatabrowsePlugin):
def __init__(self, field_names=None):
self.field_names = field_names
def field_dict(self, model):
"""
Helper function that returns a dictionary of all DateFields or
DateTimeFields in the given model. If self.field_names is set, it takes
take that into account when building the dictionary.
"""
if self.field_names is None:
return dict([(f.name, f) for f in model._meta.fields if isinstance(f, models.DateField)])
else:
return dict([(f.name, f) for f in model._meta.fields if isinstance(f, models.DateField) and f.name in self.field_names])
def model_index_html(self, request, model, site):
fields = self.field_dict(model)
if not fields:
return u''
return mark_safe(u'<p class="filter"><strong>View calendar by:</strong> %s</p>' % \
u', '.join(['<a href="calendars/%s/">%s</a>' % (f.name, force_unicode(capfirst(f.verbose_name))) for f in fields.values()]))
def urls(self, plugin_name, easy_instance_field):
if isinstance(easy_instance_field.field, models.DateField):
d = easy_instance_field.raw_value
return [mark_safe(u'%s%s/%s/%s/%s/%s/' % (
easy_instance_field.model.url(),
plugin_name, easy_instance_field.field.name,
d.year,
datetime_safe.new_date(d).strftime('%b').lower(),
d.day))]
def model_view(self, request, model_databrowse, url):
self.model, self.site = model_databrowse.model, model_databrowse.site
self.fields = self.field_dict(self.model)
# If the model has no DateFields, there's no point in going further.
if not self.fields:
raise http.Http404('The requested model has no calendars.')
if url is None:
return self.homepage_view(request)
url_bits = url.split('/')
if self.fields.has_key(url_bits[0]):
return self.calendar_view(request, self.fields[url_bits[0]], *url_bits[1:])
raise http.Http404('The requested page does not exist.')
def homepage_view(self, request):
easy_model = EasyModel(self.site, self.model)
field_list = self.fields.values()
field_list.sort(lambda x, y: cmp(x.verbose_name, y.verbose_name))
return render_to_response('databrowse/calendar_homepage.html', {'root_url': self.site.root_url, 'model': easy_model, 'field_list': field_list})
def calendar_view(self, request, field, year=None, month=None, day=None):
easy_model = EasyModel(self.site, self.model)
queryset = easy_model.get_query_set()
extra_context = {'root_url': self.site.root_url, 'model': easy_model, 'field': field}
if day is not None:
return date_based.archive_day(request, year, month, day, queryset, field.name,
template_name='databrowse/calendar_day.html', allow_empty=False, allow_future=True,
extra_context=extra_context)
elif month is not None:
return date_based.archive_month(request, year, month, queryset, field.name,
template_name='databrowse/calendar_month.html', allow_empty=False, allow_future=True,
extra_context=extra_context)
elif year is not None:
return date_based.archive_year(request, year, queryset, field.name,
template_name='databrowse/calendar_year.html', allow_empty=False, allow_future=True,
extra_context=extra_context)
else:
return date_based.archive_index(request, queryset, field.name,
template_name='databrowse/calendar_main.html', allow_empty=True, allow_future=True,
extra_context=extra_context)
assert False, ('%s, %s, %s, %s' % (field, year, month, day))
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