models.py

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.utils.translation import ugettext_lazy as _, ungettext_lazy
from django.utils import six
from django.utils.encoding import python_2_unicode_compatible
from django.db import models
from cms.models.pluginmodel import CMSPlugin
from cms.models.fields import PageField, PlaceholderField
from djangocms_text_ckeditor.fields import HTMLField

from newsbox.models import NewsboxModelBase


def newsboxcms_mcls_processor(mcls, class_name, class_bases, class_attrs, base, newsbox_opts):
    class_attrs['newsbox_summary'] = HTMLField(
        verbose_name=_('summary'))
    newsbox_opts['trans_fieldnames'].append('newsbox_summary')

    class_attrs['newsbox_body'] = PlaceholderField(
        'newsbox_body',
        verbose_name=_('body'))
    if 'newsbox_body' in newsbox_opts['trans_fieldnames']:
        newsbox_opts['trans_fieldnames'].remove('newsbox_body')


@python_2_unicode_compatible
class NewsboxPluginBase(CMSPlugin):
    title = models.CharField(
        verbose_name=_('Title'),
        max_length=255, blank=True, null=True,
        help_text=_('Title to display before the list'))
    numitems = models.PositiveSmallIntegerField(
        verbose_name=_('Number of news'),
        default=2,
        help_text=_('Number of news to display. '
                    '"0" allow you to display ALL news'))
    with_pager = models.BooleanField(
        verbose_name=_('Display a pager'),
        default=False)

    page_link = PageField(
        verbose_name=_('All news page'),
        null=True, blank=True,
        help_text=_('Page displaying all news'))

    def __str__(self):
        if self.numitems > 0:
            return six.text_type(ungettext_lazy(
                'Display of a news',
                'Display of %(nb)d news',
                self.numitems
            ) % {'nb': self.numitems})
        return six.text_type(_('Display of all news'))

    class Meta:
        abstract = True


class NewsboxCMSBase(six.with_metaclass(NewsboxModelBase, models.Model)):

    class Meta:
        abstract = True
        newsbox_metaclass_base_processor = 'newsboxcms_mcls_processor'