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104 lines
3.4 KiB
104 lines
3.4 KiB
# -*- coding: utf-8 -*-
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from django.db import models
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from hvad.models import TranslatableModel, TranslatedFields, TranslationManager
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from django.template.defaultfilters import slugify
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import copy
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class ArticleManager(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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class Article(TranslatableModel):
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"""
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Create Article 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 = ArticleManager()
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url = models.SlugField(unique=True)
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theme = models.ManyToManyField('theme.Theme')
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tag = models.ManyToManyField('theme.Tag', related_name='tags',blank=True, null=True)
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user = models.ForeignKey('accounts.User', verbose_name='Автор',
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on_delete=models.PROTECT, related_name='articles')
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main_page = models.PositiveIntegerField(default=0, db_index=True)
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#translated fields
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translations = TranslatedFields(
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main_title = models.CharField(max_length=100),
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preview = models.TextField(),
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description = models.TextField(),
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#-----meta
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title = models.CharField(max_length=255, blank=True),
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descriptions = models.CharField(max_length=255, blank=True),
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keywords = models.CharField(max_length=255, blank=True),
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)
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def __unicode__(self):
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return self.lazy_translation_getter('main_title', 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 Article.objects.safe_get(url=duplicate.url):
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#already has copy this instance
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return
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ignore_fields = ['id', 'master', 'language_code']
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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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# but lost all ManyToMany relations and Translations.
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'''
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# copy relations
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for field in self._meta.many_to_many:
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source = getattr(self, field.attname)
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destination = getattr(duplicate, field.attname)
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for item in source.all():
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destination.add(item)
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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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'''
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return duplicate
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from django.db.models.signals import post_save
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from functions.signal_handlers import post_save_handler
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post_save.connect(post_save_handler, sender=Article)
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