German Jet

tmpl = get_template('marketing/parser.html')
html = tmpl.render(done)
pdf = client.convertHtml(html)

class NewsView(ListView):
  model = News
  def get_queryset(self):
    return super().get_queryset().filter(published=True)

class MyModelAdmin(admin.ModelAdmin):
    my_filter = {1: ('field1', 'field2'), 2: ('field3', 'field4')}
    def get_fields(self, request, obj=None):
        fields = super().get_fields(request, obj)
        if obj is None:
            return fields
        return [f for f in fields if f not in self.my_filter[obj.my_type]]

class MyModelAdmin(admin.ModelAdmin):
    class Media:
        js = (
            'js/my_fields_filter.js',
        )

class Product(models.Model):
    @property
    def random_pic(self):
        return self.images.order_by('?').first()

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

from django.db import models


class Article(models.Model):
    title = models.CharField(max_lenght=32, verbose_name=_('name'))

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

from django.views import generic


class ArticleMixin(object):
    fields = ['title']
    model = Article
    paginate_by = 30

    def get_success_url(self):
        return reverse('articles_article_index')


class Index(ArticleMixin, generic.ListView):
    template_name = 'articles/index.html'


class Create(ArticleMixin, generic.CreateView):
    template_name = 'articles/create.html'


class Update(ArticleMixin, generic.UpdateView):
    template_name = 'articles/update.html'


class Delete(ArticleMixin, generic.DeleteView):
    template_name = 'articles/delete.html'


index = Index.as_view()
create = Create.as_view()
update = Update.as_view()
delete = Delete.as_view()

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

from django.conf.urls import url
from django.conf.urls import patterns

from articles.views import article

urlpatterns = patterns('',
                       url(r'^$', article.index, name='articles_article_index'),
                       url(r'^update/(?P<pk>[\w-]+)/$', article.update, name='articles_article_update'),
                       url(r'^delete/(?P<pk>[\w-]+)/$', article.delete, name='articles_article_delete'),
                       url(r'^create/$', article.create, name='articles_article_create'),
                       )

Стоит ли учить язык Ruby и фреймворк Ruby on Rails в 2016 году?

В мире PHP активно развивается много отличных фреймворков и библиотек. В JavaScript вообще каждый день революция, новые подходы и фреймворки растут как грибы после дождя.
А вот про Ruby и Ruby on Rails давно ничего не слышно.

1. Тормозит загрузку страницы - будете ждать ответа от сервера
   
2. Загружает ваш сервер