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130 lines
4.8 KiB
130 lines
4.8 KiB
# -*- coding: utf-8 -*-
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from django.db import models
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from django.contrib.contenttypes import generic
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from hvad.models import TranslatableModel, TranslatedFields, TranslationManager
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from functions.custom_fields import EnumField
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from functions.custom_fields import LocationField
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import copy
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class PlaceConferenceManager(TranslationManager):
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def safe_get(self, **kwargs):
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model = self.model
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try:
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return model.objects.get(**kwargs)
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except:
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return None
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CONFERENCE_TYPE = (('Convention centre', 'Конгресс-центр'), ('Exposition centre', 'Конференц зал'),)
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class PlaceConference(TranslatableModel):
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"""
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Create PlaceConference model
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Uses hvad.TranslatableModel which is child of django.db.models class
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"""
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#set manager of this model
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objects = PlaceConferenceManager()
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url = models.SlugField(unique=True)
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country = models.ForeignKey('country.Country', on_delete=models.PROTECT)
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city = models.ForeignKey('city.City', on_delete=models.PROTECT)
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#type uses EnumField for creating Enum type field in Mysql database
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type = EnumField(values = [item1 for item1, item2 in CONFERENCE_TYPE])
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#information
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#
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address= LocationField(verbose_name='Адресс')
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#
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phone = models.PositiveIntegerField(blank=True, null=True)
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fax = models.PositiveIntegerField(blank=True, null=True)
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web_page = models.URLField(blank=True)
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email = models.EmailField(blank=True)
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total_capacity = models.PositiveIntegerField(blank=True, null=True)
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amount_halls = models.PositiveIntegerField(blank=True, null=True)
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exposition_hall = models.NullBooleanField()
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exp_hall_area = models.PositiveIntegerField(blank=True, null=True)
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#
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wifi = models.NullBooleanField()
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multimedia_equipment = models.NullBooleanField()
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conference_call = models.NullBooleanField()
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translate_equipment = models.NullBooleanField()
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banquet_hall = models.NullBooleanField()
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catering = models.NullBooleanField()
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hotel = models.NullBooleanField()
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#
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files = generic.GenericRelation('file.FileModel',content_type_field='content_type', object_id_field='object_id')
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#translations is translated fields
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translations = TranslatedFields(
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name = models.CharField(max_length=100),
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description = models.TextField(blank=True),
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adress = models.TextField(blank=True),
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hall_capacity = models.CharField(max_length=255, blank=True),
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#-----meta data
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title = models.CharField(max_length=250),
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descriptions = models.CharField(max_length=250),
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keywords = models.CharField(max_length=250),
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)
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#fields saves information about creating and changing model
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created = models.DateTimeField(auto_now_add=True)
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modified = models.DateTimeField(auto_now=True)
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def __unicode__(self):
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return self.lazy_translation_getter('name', unicode(self.pk))
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def clone(self):
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"""
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Return an identical copy of the instance with a new ID.
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"""
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if not self.pk:
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raise ValueError('Instance must be saved before it can be cloned.')
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duplicate = copy.copy(self)
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# Setting pk to None. Django thinking this is a new object.
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duplicate.pk = None
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# url must be unique
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duplicate.url += '_copy'
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if PlaceConference.objects.safe_get(url=duplicate.url):
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#already has copy this instance
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return
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# duplicate should not be published
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duplicate.is_published = False
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duplicate.cancel_by_administrator = False
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duplicate.save()
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# but lost all Translations and Halls.
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# copy translations
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languages = self.get_available_languages()
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ignore_fields = ['id', 'master', 'language_code']
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for code in languages:
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duplicate.translate(code)
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tr = self._meta.translations_model.objects.get(language_code = code,master__id=self.pk)
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for field in duplicate._translated_field_names:
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if field in ignore_fields:
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continue
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setattr(duplicate, field, getattr(tr, field))
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duplicate.save()
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# copy halls
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halls = Hall.objects.filter(place_conference=getattr(self, 'id'))
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for hall in halls:
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duplicate_hall = copy.copy(hall)
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duplicate_hall.place_conference = duplicate
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duplicate_hall.save()
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return duplicate
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class Hall(models.Model):
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"""
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Create Hall model which saves information about halls in PlaceConference
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"""
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place_conference = models.ForeignKey(PlaceConference)
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name = models.CharField(max_length=100, blank=True)
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number = models.PositiveIntegerField(blank=True, null=True)
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capacity = models.PositiveIntegerField(blank=True, null=True)
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