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157 lines
4.9 KiB
157 lines
4.9 KiB
# -*- coding: utf-8 -*-
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from django.db import models
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from django.utils.translation import ugettext_lazy as _
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from hvad.models import TranslatableModel, TranslatedFields, TranslationManager
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from bitfield import BitField
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import copy
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from exposition.models import Exposition
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from conference.models import Conference
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from seminar.models import Seminar
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from webinar.models import Webinar
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from functions.models_methods import ExpoManager
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class Theme(TranslatableModel):
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"""
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Create Theme 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 = ExpoManager()
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FLAGS = (
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('exposition', 'Выставка'),
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('conference', 'Конференция'),
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('seminar', 'Семинар'),
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('webinar', 'Вебинар'),
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)
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url = models.SlugField(unique=True, max_length=255)
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types = BitField([k for k, v in FLAGS])
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#translated fields
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translations = TranslatedFields(
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name = models.CharField(max_length=100),
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main_title = models.CharField(max_length=100),
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description = models.TextField(blank=True),
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#-----meta data
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title = models.CharField(max_length=250, blank=True),
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descriptions = models.CharField(max_length=250, blank=True),
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keywords = models.CharField(max_length=250, blank=True),
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)
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class Meta:
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ordering = ['translations__name']
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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 expositions_number(self):
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return len(Exposition.objects.filter(theme__id=self.id))
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def conferences_number(self):
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return len(Conference.objects.filter(theme__id=self.id))
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def seminars_number(self):
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return len(Seminar.objects.filter(theme__id=self.id))
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def webinars_number(self):
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return len(Webinar.objects.filter(theme__id=self.id))
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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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ignore_fields = ['id', 'master', 'language_code']
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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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duplicate.translate('ru')
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tr = self._meta.translations_model.objects.get(language_code = 'ru',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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class Tag(TranslatableModel):
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"""
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Create Tag 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 = ExpoManager()
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url = models.SlugField(unique=True, max_length=255)
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theme = models.ForeignKey(Theme, on_delete=models.PROTECT, related_name='tags')
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#translated fields
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translations = TranslatedFields(
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name = models.CharField(max_length=100),
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main_title = models.CharField(max_length=100),
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description = models.TextField(blank=True),
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#-----meta data
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title = models.CharField(max_length=250, blank=True),
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descriptions = models.CharField(max_length=250, blank=True),
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keywords = models.CharField(max_length=250, blank=True),
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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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ignore_fields = ['id', 'master', 'language_code']
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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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duplicate.translate('ru')
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tr = self._meta.translations_model.objects.get(language_code = 'ru',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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return duplicate
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from django.db.models.signals import post_save, pre_save
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from functions.signal_handlers import post_save_handler, pre_save_handler
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pre_save.connect(pre_save_handler, sender=Theme)
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pre_save.connect(pre_save_handler, sender=Tag)
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post_save.connect(post_save_handler, sender=Theme)
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post_save.connect(post_save_handler, sender=Tag)
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