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# -*- coding: utf-8 -*-
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from datetime import datetime, date, timedelta
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from copy import copy
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from django.utils.translation import ugettext_lazy as _
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from django.contrib.auth.models import User
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from django.db import models
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from django import forms
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from calebasse.agenda import managers
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from calebasse.utils import weeks_since_epoch, weekday_ranks
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from interval import Interval
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__all__ = (
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'EventType',
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'Event',
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'EventWithAct',
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)
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class EventType(models.Model):
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'''
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Simple ``Event`` classifcation.
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'''
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class Meta:
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verbose_name = u'Type d\'événement'
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verbose_name_plural = u'Types d\'événement'
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def __unicode__(self):
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return self.label
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label = models.CharField(_('label'), max_length=50)
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rank = models.IntegerField(_('Sorting Rank'), null=True, blank=True, default=0)
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class Event(models.Model):
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'''
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Container model for general agenda events
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'''
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objects = managers.EventManager()
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title = models.CharField(_('Title'), max_length=32, blank=True)
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description = models.TextField(_('Description'), max_length=100)
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event_type = models.ForeignKey(EventType, verbose_name=u"Type d'événement")
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creator = models.ForeignKey(User, verbose_name=_(u'Créateur'), blank=True, null=True)
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create_date = models.DateTimeField(_(u'Date de création'), auto_now_add=True)
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services = models.ManyToManyField('ressources.Service',
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null=True, blank=True, default=None)
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participants = models.ManyToManyField('personnes.People',
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null=True, blank=True, default=None)
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room = models.ForeignKey('ressources.Room', blank=True, null=True,
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verbose_name=u'Salle')
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start_datetime = models.DateTimeField(_('Début'), db_index=True)
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end_datetime = models.DateTimeField(_('Fin'), blank=True, null=True)
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old_ev_id = models.CharField(max_length=8, blank=True, null=True)
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old_rr_id = models.CharField(max_length=8, blank=True, null=True)
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# only used when there is no rr id
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old_rs_id = models.CharField(max_length=8, blank=True, null=True)
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PERIODS = (
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(1, u'Toutes les semaines'),
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(2, u'Une semaine sur deux'),
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(3, u'Une semaine sur trois'),
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(4, 'Une semaine sur quatre'),
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(5, 'Une semaine sur cinq')
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)
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OFFSET = range(0,4)
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PERIODICITIES = (
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(1, u'Toutes les semaines'),
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(2, u'Une semaine sur deux'),
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(3, u'Une semaine sur trois'),
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(4, u'Une semaine sur quatre'),
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(5, u'Une semaine sur cinq'),
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(6, u'La première semaine du mois'),
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(7, u'La deuxième semaine du mois'),
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(8, u'La troisième semaine du mois'),
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(9, u'La quatrième semaine du mois'),
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(10, u'La dernière semaine du mois'),
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(11, u'Les semaines paires'),
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(12, u'Les semaines impaires')
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)
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WEEK_RANKS = (
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(0, u'La première semaine du mois'),
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(1, u'La deuxième semaine du mois'),
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(2, u'La troisième semaine du mois'),
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(3, u'La quatrième semaine du mois'),
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(4, u'La dernière semaine du mois')
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)
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PARITIES = (
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(0, u'Les semaines paires'),
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(1, u'Les semaines impaires')
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)
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recurrence_periodicity = models.PositiveIntegerField(
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choices=PERIODICITIES,
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verbose_name=u"Périodicité",
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default=None,
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blank=True,
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null=True)
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recurrence_week_day = models.PositiveIntegerField(default=0)
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recurrence_week_offset = models.PositiveIntegerField(
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choices=zip(OFFSET, OFFSET),
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verbose_name=u"Décalage en semaines par rapport au 1/1/1970 pour le calcul de période",
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default=0,
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db_index=True)
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recurrence_week_period = models.PositiveIntegerField(
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choices=PERIODS,
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verbose_name=u"Période en semaines",
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default=None,
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blank=True,
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null=True,
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db_index=True)
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recurrence_week_rank = models.PositiveIntegerField(
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verbose_name=u"Rang de la semaine dans le mois",
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choices=WEEK_RANKS,
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blank=True, null=True)
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recurrence_week_parity = models.PositiveIntegerField(
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choices=PARITIES,
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verbose_name=u"Parité des semaines",
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blank=True,
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null=True)
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recurrence_end_date = models.DateField(
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verbose_name=_(u'Fin de la récurrence'),
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blank=True, null=True,
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db_index=True)
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PERIOD_LIST_TO_FIELDS = [(1, None, None),
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(2, None, None),
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(3, None, None),
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(4, None, None),
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(5, None, None),
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(None, 0, None),
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(None, 1, None),
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(None, 2, None),
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(None, 3, None),
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(None, 4, None),
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(None, None, 0),
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(None, None, 1)
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]
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class Meta:
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verbose_name = u'Evénement'
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verbose_name_plural = u'Evénements'
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ordering = ('start_datetime', 'end_datetime', 'title')
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def __init__(self, *args, **kwargs):
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if kwargs.get('start_datetime') and not kwargs.has_key('recurrence_end_date'):
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kwargs['recurrence_end_date'] = kwargs.get('start_datetime').date()
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super(Event, self).__init__(*args, **kwargs)
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def clean(self):
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'''Initialize recurrence fields if they are not.'''
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if self.recurrence_periodicity:
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l = self.PERIOD_LIST_TO_FIELDS[self.recurrence_periodicity-1]
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else:
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l = None, None, None
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self.recurrence_week_period = l[0]
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self.recurrence_week_rank = l[1]
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self.recurrence_week_parity = l[2]
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if self.recurrence_periodicity:
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if self.recurrence_end_date and self.recurrence_end_date < self.start_datetime.date():
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raise forms.ValidationError(u'La date de fin de périodicité doit être postérieure à la date de début.')
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if self.start_datetime:
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self.recurrence_week_day = self.start_datetime.weekday()
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if self.recurrence_week_period is not None:
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if self.start_datetime:
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self.recurrence_week_offset = weeks_since_epoch(self.start_datetime) % self.recurrence_week_period
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if self.recurrence_week_parity is not None:
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if self.start_datetime:
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week = self.start_datetime.date().isocalendar()[1]
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start_week_parity = week % 2
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if start_week_parity != self.recurrence_week_parity:
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raise forms.ValidationError(u'Le date de départ de la périodicité est en semaine {week}.'.format(week=week))
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if self.recurrence_week_rank is not None and self.start_datetime:
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start_week_ranks = weekday_ranks(self.start_datetime.date())
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if self.recurrence_week_rank not in start_week_ranks:
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raise forms.ValidationError('La date de début de périodicité doit faire partie de la bonne semaine dans le mois.')
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def timedelta(self):
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'''Distance between start and end of the event'''
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return self.end_datetime - self.start_datetime
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def today_occurence(self, today=None):
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'''For a recurring event compute the today 'Event'.
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The computed event is the fake one that you cannot save to the database.
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'''
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today = today or date.today()
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if not self.is_recurring():
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if today == self.start_datetime.date():
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return self
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else:
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return None
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if today.weekday() != self.recurrence_week_day:
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return None
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if self.start_datetime.date() > today:
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return None
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if self.recurrence_end_date and self.recurrence_end_date < today:
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return None
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if self.recurrence_week_period is not None:
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if weeks_since_epoch(today) % self.recurrence_week_period != self.recurrence_week_offset:
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return None
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elif self.recurrence_week_parity is not None:
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if today.isocalendar()[1] % 2 != self.recurrence_week_parity:
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return None
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elif self.recurrence_week_rank is not None:
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if self.recurrence_week_rank not in weekday_ranks(today):
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return None
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else:
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raise NotImplemented
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start_datetime = datetime.combine(today, self.start_datetime.timetz())
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end_datetime = start_datetime + self.timedelta()
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event = copy(self)
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event.start_datetime = start_datetime
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event.end_datetime = end_datetime
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event.recurrence_end_date = None
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event.recurrence_week_offset = None
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event.recurrence_week_period = None
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event.parent = self
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# the returned event is "virtual", it must not be saved
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def save(*args, **kwarks):
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raise RuntimeError()
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event.save = save
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return event
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def next_occurence(self, today=None):
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'''Returns the next occurence after today.'''
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today = today or date.today()
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for occurence in self.all_occurences():
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if occurence.start_datetime.date() > today:
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return occurence
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def is_recurring(self):
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'''Is this event multiple ?'''
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return self.recurrence_periodicity is not None
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def all_occurences(self, limit=90):
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'''Returns all occurences of this event as virtual Event objects
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limit - compute occurrences until limit days in the future
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Default is to limit to 90 days.
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'''
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if self.recurrence_periodicity is not None:
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day = self.start_datetime.date()
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max_end_date = max(date.today(), self.start_datetime.date()) + timedelta(days=limit)
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end_date = min(self.recurrence_end_date or max_end_date, max_end_date)
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if self.recurrence_week_period is not None:
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delta = timedelta(days=self.recurrence_week_period*7)
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while day <= end_date:
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yield self.today_occurence(day)
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day += delta
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elif self.recurrence_week_parity is not None:
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delta = timedelta(days=7)
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while day <= end_date:
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if day.isocalendar()[1] % 2 == self.recurrence_week_parity:
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yield self.today_occurence(day)
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day += delta
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elif self.recurrence_week_rank is not None:
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delta = timedelta(days=7)
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while day <= end_date:
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if self.recurrence_week_rank in weekday_ranks(day):
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yield self.today_occurence(day)
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day += delta
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else:
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yield self
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def save(self, *args, **kwargs):
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self.clean() # force call to clean to initialize recurrence fields
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super(Event, self).save(*args, **kwargs)
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def delete(self, *args, **kwargs):
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from ..actes.models import Act
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for a in Act.objects.filter(parent_event=self):
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if len(a.actvalidationstate_set.all()) > 1:
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a.parent_event = None
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a.save()
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super(Event, self).delete(*args, **kwargs)
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def to_interval(self):
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return Interval(self.start_datetime, self.end_datetime)
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def is_event_absence(self):
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return False
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def __unicode__(self):
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return self.title
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class OldRSID(models.Model):
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event = models.ForeignKey(Event)
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old_rs_id = models.CharField(max_length=8, blank=True, null=True)
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class EventWithActManager(managers.EventManager):
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def create_patient_appointment(self, creator, title, patient,
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doctors=[], act_type=None, service=None, start_datetime=None, end_datetime=None,
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room=None, periodicity=1, until=False):
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appointment = self.create_event(creator=creator,
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title=title,
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event_type=EventType(id=1),
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participants=doctors,
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services=[service],
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start_datetime=start_datetime,
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end_datetime=end_datetime,
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room=room,
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periodicity=periodicity,
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until=until,
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act_type=act_type,
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patient=patient)
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return appointment
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class EventWithAct(Event):
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'''An event corresponding to an act.'''
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objects = EventWithActManager()
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act_type = models.ForeignKey('ressources.ActType',
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verbose_name=u'Type d\'acte')
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patient = models.ForeignKey('dossiers.PatientRecord')
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@property
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def act(self):
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return self.get_or_create_act()
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def get_or_create_act(self, today=None):
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from ..actes.models import Act, ActValidationState
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today = today or self.start_datetime.date()
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act, created = Act.objects.get_or_create(patient=self.patient,
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parent_event=getattr(self, 'parent', self),
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date=today,
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act_type=self.act_type)
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self.update_act(act)
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if created:
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ActValidationState.objects.create(act=act, state_name='NON_VALIDE',
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author=self.creator, previous_state=None)
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return act
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def update_act(self, act):
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'''Update an act to match details of the meeting'''
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delta = self.timedelta()
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duration = delta.seconds // 60
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act._duration = duration
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act.doctors = self.participants.select_subclasses()
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act.act_type = self.act_type
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act.patient = self.patient
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act.date = self.start_datetime.date()
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act.save()
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def save(self, *args, **kwargs):
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'''Force event_type to be patient meeting.'''
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self.event_type = EventType(id=1)
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super(EventWithAct, self).save(*args, **kwargs)
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# list of occurences may have changed
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from ..actes.models import Act
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occurences = list(self.all_occurences())
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acts = Act.objects.filter(parent_event=self)
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occurences_by_date = dict((o.start_datetime.date(), o) for o in occurences)
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acts_by_date = dict()
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for a in acts:
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# sanity check
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assert a.date not in acts_by_date
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acts_by_date[a.date] = a
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for a in acts:
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o = occurences_by_date.get(a.date)
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if o:
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o.update_act(a)
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else:
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if len(a.actvalidationstate_set.all()) > 1:
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a.parent_event = None
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a.save()
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else:
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a.delete()
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for o in occurences:
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if o.start_datetime.date() in acts_by_date:
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continue
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o.get_or_create_act()
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def is_event_absence(self):
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return self.act.is_absent()
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def __unicode__(self):
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kwargs = {
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'patient': self.patient,
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'start_datetime': self.start_datetime,
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'act_type': self.act_type
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}
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kwargs['doctors'] = ', '.join(map(unicode, self.participants.all())) if self.id else ''
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return u'Rdv le {start_datetime} de {patient} avec {doctors} pour ' \
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'{act_type} ({act_type.id})'.format(**kwargs)
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from django.db.models.signals import m2m_changed
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from django.dispatch import receiver
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@receiver(m2m_changed, sender=Event.participants.through)
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def participants_changed(sender, instance, action, **kwargs):
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if action.startswith('post'):
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workers = [ p.worker for p in instance.participants.prefetch_related('worker') ]
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for act in instance.act_set.all():
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act.doctors = workers
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