All you need is...Mezzanine!


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Slides of talk by Simone Dalla on Mezzanine at Pycon 5, Florence, Italy, May 2014.

Mezzanine is an open source content management platform built using Django Framework.

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All you need is...Mezzanine!

  1. 1. PyCon 5 - Florence, May 24, 2014 All you need is… ...Mezzanine!
  2. 2. Simone Dalla @simodalla CI[T]O of Comune di Zola Predosa (Bologna, IT) Pythonista and Django programmer. I use Python into my work environment for..... ALL!
  3. 3. Problem Respect of Italy’s decree-law: “Amministrazione Trasparente, Pubblicazioni ai sensi del Decreto Legislativo 14 marzo 2013, n. 33. Riordino della disciplina riguardante gli obblighi di pubblicità, trasparenza e diffusione di informazioni da parte delle pubbliche amministrazioni. (GU n.80 del 5-4-2013)” ≃ 250 obligation to publish into official government web site
  4. 4. OpenPa by Mezzanine
  5. 5.
  6. 6.
  7. 7. Batteries Included
  8. 8. Batteries Included
  9. 9. - Ecommerce: - Forum: - Themes: ~ 70 Packages: https://www.djangopackages. com/grids/g/mezzanine/ EXTRABatteries Included
  10. 10. Bootstrap (into an virtualenv) # Install from Pypi (venv)$ pip install mezzanine [south django-debug-toolbar] # Create a project (venv)$ mezzanine-project mysite (venv)$ cd mysite # Create a database (venv)$ python createdb # Apply default migrations (venv)$ python migrate # Run the webserver (venv)$ python runserver
  11. 11. Et voilà...
  12. 12. User
  13. 13. User (backoffice)
  14. 14. User (backoffice)
  15. 15. Growth of Mezzanine has been consistent
  16. 16. Developer... “and now???”
  17. 17. “Mantra for working with Mezzanine: Mezzanine is Just Django” Ken Bolton, long-time Mezzanine contributor.
  18. 18. Creating Custom Content Types from django.db import models from mezzanine.pages.models import Page # The members of Page will be inherited by the Poll # model, such as title, slug, etc. For polls we can use # the title field to store the poll’s question. For our # model definition, we just add any extra fields that # aren't part of the Page model, in this case, date of # publication. class Poll(Page): # question = models.CharField(max_length=200) pub_date = models.DateTimeField("Date published") class Choice(models.Model): poll = models.ForeignKey(Poll) choice_text = models.CharField(max_length=200) votes = models.IntegerField(default=0) 6/intro/tutorial01/#creating-models html#creating-custom-content-types (venv)$ python startapp polls polls/
  19. 19. Admin Custom Content Types from copy import deepcopy from django.contrib import admin from mezzanine.core.admin import ( TabularDynamicInlineAdmin) from mezzanine.pages.admin import PageAdmin from .models import Poll, Choice poll_extra_fieldsets = ( (None, {"fields": ("pub_date",)}),) class ChoiceInline(TabularDynamicInlineAdmin): model = Choice class PollAdmin(PageAdmin): inlines = (ChoiceInline,) fieldsets = (deepcopy(PageAdmin.fieldsets) + poll_extra_fieldsets), PollAdmin) 6/intro/tutorial02/#adding-related-objects html#creating-custom-content-types polls/
  20. 20. Displaying Custom Content Types >>> Poll.objects.create(title="What's your favourite program language?", pub_date=now()) <Poll: What's your favourite program language?> >>> page = Page.objects.create(title="What's your favourite program language?") >>> page <Page: What's your favourite program language?> >>> page.poll <Poll: What's your favourite program language?> >>> page.get_content_model() <Poll: What’s your favourite program language> {% extends "pages/page.html" %} {% load mezzanine_tags %} {% block title %} {% editable page.poll.title %}{{ page.poll.title }}{% endeditable %} {% endblock %} {% block main %} {{ block.super }} <p>Published at {{ page.poll.pub_date }}</p> <ul> {% for choice in page.poll.choice_set.all %} <li>{% editable choice.choice_text %}{{ choice.choice_text }}{% endeditable %} n. votes: {{ choice.votes }}</li> {% endfor %} </ul> {% endblock %} polls/templates/
  21. 21. Page Processor from django.shortcuts import get_object_or_404 from mezzanine.pages.page_processors import processor_for from .models import Poll, Choice @processor_for(Poll) def author_form(request, page): if request.method == "POST": p = get_object_or_404(Poll, try: selected_choice = p.choice_set.get(pk=request.POST['choice']) except (KeyError, Choice.DoesNotExist): return {'error_message': "You didn't select a choice."} else: selected_choice.votes += 1 return {'success_message': "Thank you for your vote."} <h2>Vote!!!</h2> {% if error_message %}<div class="alert alert-danger">{{ error_message }}</div>{% endif %} {% if success_message %}<div class="alert alert-success">{{ success_message }}</div>{% endif %} <form action="." method="post"> {% csrf_token %} {% for choice in page.poll.choice_set.all %} <input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ }}" /> <label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br /> {% endfor %} <input type="submit" value="Vote" /> </form> polls/ polls/templates/
  22. 22. Integrating Third-party Apps # MEZZANINE'S URLS # ---------------- # ADD YOUR OWN URLPATTERNS *ABOVE* THE LINE BELOW. ``mezzanine.urls`` INCLUDES # A *CATCH ALL* PATTERN FOR PAGES, SO URLPATTERNS ADDED BELOW ``mezzanine. urls`` # WILL NEVER BE MATCHED! url(r'^dj_polls/', include('dj_polls.urls', namespace='polls')), # If you'd like more granular control over the patterns in ``mezzanine.urls``, go right ahead # and take the parts you want from it, and use them directly below instead of using # ``mezzanine.urls``. ("^", include("mezzanine.urls")), Our “regoular third-party” Django app to integrate. Polls apps of official Django tutorial named here “dj_polls”. Polls “Mezzanine” app developed earlier for custom types.
  23. 23. Integrating Third-party Apps Other requirement is pages in Mezzanine’s navigation to point to the urlpatterns for these regular Django apps. Implementing this simply requires creating a page (RichTextPage, Link..) in the admin, with a URL matching a pattern used by the application.
  24. 24. More information? Need help? Documentation @stephen_mcd PyCon APAC keynote Source Code Mailing list! forum/mezzanine-users Issues tracker
  25. 25. Thank you! ….questions? Talk Mezzanine Project code