old_contents: # -*- coding: utf-8 -*-
  from django.core.urlresolvers import reverse
  from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  from cms.models.pluginmodel import CMSPlugin
  
  
  class SubscriptionPlugin(CMSPlugin):
  
      list_id = models.CharField(_('List ID'), max_length=20)
      assign_language = models.BooleanField(
          _('Save user\'s language'), default=True, help_text=_('Save the user\'s language based on the page language'))
  
      def __unicode__(self):
          return str(self.list_id)
  
  
  class CampaignManager(models.Manager):
      def published(self):
          return self.filter(send_time__isnull=False, hidden=False)
  
  
  class Campaign(models.Model):
      cid = models.CharField(_('campaign id'), max_length=255, editable=False)
      mc_title = models.CharField(_('campaign title'), max_length=255, editable=False)
      subject = models.CharField(_('subject'), max_length=255, editable=False)
      send_time = models.DateTimeField(_('time sent'), blank=True, null=True, editable=False)
      content_text = models.TextField(_('content text'), blank=True, null=True, editable=False)
      content_html = models.TextField(_('content HTML'), blank=True, null=True, editable=False)
      slug = models.SlugField(_('slug (generated)'), editable=False)
      hidden = models.BooleanField(_('hidden'), default=False)
  
      objects = CampaignManager()
  
      class Meta:
          ordering = ['-send_time']
  
      def __str__(self):
          return '%s (%s)' % (self.mc_title, self.subject)
  
      def get_absolute_url(self):
          return reverse('mailchimp_campaign_detail', kwargs={'pk': self.pk, 'slug': self.slug})
  
  
  class CampaignArchivePlugin(CMSPlugin):
      count = models.PositiveSmallIntegerField(
          _('count'), null=True, blank=True, help_text=_('Leave blank to display all')
      )
  
  
  class SelectedCampaignsPlugin(CMSPlugin):
      campaigns = models.ManyToManyField(Campaign)
  
      def copy_relations(self, old_instance):
          self.campaigns = old_instance.campaigns.all()
  
new_contents: # -*- coding: utf-8 -*-
  from django.core.urlresolvers import reverse
  from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  from cms.models.pluginmodel import CMSPlugin
  
  
  class SubscriptionPlugin(CMSPlugin):
  
      list_id = models.CharField(_('List ID'), max_length=20)
      assign_language = models.BooleanField(
          _('Save user\'s language'), default=True, help_text=_('Save the user\'s language based on the page language'))
  
      def __unicode__(self):
          return unicode(self.list_id)
  
  
  class CampaignManager(models.Manager):
      def published(self):
          return self.filter(send_time__isnull=False, hidden=False)
  
  
  class Campaign(models.Model):
      cid = models.CharField(_('campaign id'), max_length=255, editable=False)
      mc_title = models.CharField(_('campaign title'), max_length=255, editable=False)
      subject = models.CharField(_('subject'), max_length=255, editable=False)
      send_time = models.DateTimeField(_('time sent'), blank=True, null=True, editable=False)
      content_text = models.TextField(_('content text'), blank=True, null=True, editable=False)
      content_html = models.TextField(_('content HTML'), blank=True, null=True, editable=False)
      slug = models.SlugField(_('slug (generated)'), editable=False)
      hidden = models.BooleanField(_('hidden'), default=False)
  
      objects = CampaignManager()
  
      class Meta:
          ordering = ['-send_time']
  
      def __str__(self):
          return '%s (%s)' % (self.mc_title, self.subject)
  
      def get_absolute_url(self):
          return reverse('mailchimp_campaign_detail', kwargs={'pk': self.pk, 'slug': self.slug})
  
  
  class CampaignArchivePlugin(CMSPlugin):
      count = models.PositiveSmallIntegerField(
          _('count'), null=True, blank=True, help_text=_('Leave blank to display all')
      )
  
  
  class SelectedCampaignsPlugin(CMSPlugin):
      campaigns = models.ManyToManyField(Campaign)
  
      def copy_relations(self, old_instance):
          self.campaigns = old_instance.campaigns.all()
  
subject: fix error on saving plugin