Django Mezzanine

---

1. Blog with Featured Posts

from mezzanine.blog.models import BlogPost

# Get the featured posts
featured_posts = BlogPost.objects.filter(featured=True)

2. Portfolio Gallery

from mezzanine.galleries.models import Gallery

# Get the gallery and images
gallery = Gallery.objects.get(slug='my-gallery')
images = gallery.images.all()

3. Event Calendar

from mezzanine.events.models import Event

# Get upcoming events
upcoming_events = Event.objects.filter(start_time__gte=datetime.now())

4. Form with File Upload

from django.forms import ModelForm
from mezzanine.forms.models import Form

# Create a form class with a FileField
class MyForm(ModelForm):
    file = forms.FileField()

    class Meta:
        model = Form

5. Custom Template Tag

from django import template

# Create a custom template tag
@register.simple_tag
def my_tag(arg1, arg2):
    return arg1 + arg2

6. Custom Template Filter

from django import template

# Create a custom template filter
@register.filter
def my_filter(value):
    return value.upper()

7. Custom Context Processor

from django.conf import settings
from django.contrib.auth import get_user_model

# Create a custom context processor
def my_context_processor(request):
    return {
        'site_title': settings.SITE_TITLE,
        'current_user': get_user_model().objects.filter(is_active=True).count(),
    }

8. Custom Sitemaps

from mezzanine.conf import settings

# Add custom sitemaps to the site's sitemap
settings.SITEMAPS = ['mezzanine.pages.sitemaps.HtmlSitemap', 'myapp.sitemaps.MySitemap']

9. Custom Middleware

from django.utils.cache import patch_vary_headers

# Create a custom middleware that patches Vary headers
class MyMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        response = self.get_response(request)
        patch_vary_headers(response, ['User-Agent'])
        return response

10. Custom Menu

from mezzanine.pages.models import PageMenu

# Create a custom menu
menu = PageMenu(title='My Menu')
menu.save()

11. Custom Page Type

from django.contrib import admin
from mezzanine.pages.models import Page

# Create a custom page type
class MyPage(Page):
    class Meta:
        verbose_name = 'My Page'
        verbose_name_plural = 'My Pages'

# Register the page type in the Django admin
admin.site.register(MyPage)

12. Custom Blocks

from mezzanine.blocks.models import Block

# Create a custom block
class MyBlock(Block):
    class Meta:
        verbose_name = 'My Block'
        verbose_name_plural = 'My Blocks'

13. Custom Widgets

from django.forms.widgets import Widget

# Create a custom widget
class MyWidget(Widget):
    def render(self, name, value, attrs=None):
        return '<input type="text" name="%s" value="%s" %s>' % (name, value, attrs)

14. Custom URL Patterns

from django.conf.urls import url
from myapp import views

# Add custom URL patterns to the Mezzanine URLconf
urlpatterns = [
    url(r'^my-view/$', views.my_view, name='my_view'),
]

15. Custom Password Reset Email

from django.core.mail import send_mail

# Send a custom password reset email
def send_reset_password_email(user, token):
    send_mail(
        'Password Reset',
        'Click the link below to reset your password: http://example.com/reset-password/%s' % token,
        '[e-mail]',
        [user.email],
    )

16. Custom User Model

from django.contrib.auth.models import AbstractUser

# Create a custom user model
class MyUser(AbstractUser):
    pass

17. Custom Authentication Backends

from django.contrib.auth.backends import ModelBackend

# Create a custom authentication backend
class MyBackend(ModelBackend):
    def authenticate(self, username, password):
        try:
            user = MyUser.objects.get(username=username)
        except MyUser.DoesNotExist:
            return None
        if user.check_password(password):
            return user
        return None

18. Custom Cache Keys

from mezzanine.core.cache import cache_key

# Create a custom cache key for a page
def page_cache_key(request, page):
    return cache_key('mezzanine_page_{}_{}'.format(language_code(request), page.slug),
                      timeout=3600)

19. Custom Django Admin Views

from django.contrib import admin

# Create a custom Django admin view for a page
class MyPageAdminView(admin.ModelAdmin):
    list_display = ('title', 'slug', 'status')
    search_fields = ('title', 'content')

20. Custom Field Generator

from mezzanine.forms.generators import FieldGenerator

# Create a custom field generator for a form
class MyFieldGenerator(FieldGenerator):
    def generate(self, form, field):
        return forms.CharField()

21. Custom South Migrations

# Create a custom South migration
class Migration(south.migration.Migration):
    def forwards(self, orm):
        # Add a field to the Page model
        db.add_column('pages_page', 'my_field', db.CharField(max_length=255))

    def backwards(self, orm):
        # Remove the field from the Page model
        db.delete_column('pages_page', 'my_field')

22. Custom CSS and JavaScript

from django import template

# Add custom CSS and JavaScript to the template context
def mezzanine_settings(request):
    context = {'CSS_EXTRAS': ['my_styles.css'], 'JS_EXTRAS': ['my_scripts.js']}
    return context

23. Custom Template Includes

# Include a custom template in the base template

<div data-gb-custom-block data-tag="include" data-0='my_template.html'></div>

24. Custom Language Chooser

from django.utils.translation import get_language

# Create a custom language chooser
def language_chooser(request):
    return get_language()

25. Custom Static File Storage

from django.conf import settings

# Set a custom static file storage
settings.STATICFILES_STORAGE = 'myapp.storage.MyStaticFilesStorage'

26. Custom Request Processor

from django.dispatch import receiver

# Create a custom request processor
@receiver(request_started)
def my_request_processor(sender, **kwargs):
    request = kwargs['request']
    # Do something with the request

27. Custom Signal Handlers

from django.dispatch import receiver

# Create a custom signal handler
@receiver(page_published)
def my_page_published(sender, **kwargs):
    page = kwargs['page']
    # Do something with the page

28. Custom Content Handlers

from mezzanine.contenttypes import register

# Create a custom content handler
@register(MyModel)
class MyModelHandler(ContentHandler):
    def render(self, request, instance):
        # Render the instance

29. Custom Autocomplete Views

from django.views.generic.base import View

# Create a custom autocomplete view
class MyAutocompleteView(View):
    def get(self, request):
        # Get the query string
        query = request.GET.get('q')
        # Query the database
        results = MyModel.objects.filter(name__startswith=query)
        # Return the results
        return JsonResponse({'results': [result.name for result in results]})

30. Custom Ajax Views

from django.views.generic.base import View

# Create a custom Ajax view
class MyAjaxView(View):
    def post(self, request):
        # Get the data from the request
        data = request.POST
        # Do something with the data
        # Return the response
        return JsonResponse({'success': True})

31. Custom Web Services

from django.contrib import admin

# Create a custom web service
class MyWebService(admin.ModelAdmin):
    list_display = ('title', 'author', 'publish_date')
    search_fields = ('title', 'content')
    readonly_fields = ('publish_date',)

32. Custom RESTful APIs

from django.urls import path
from rest_framework.urlpatterns import format_suffix_patterns

# Create a custom RESTful API
urlpatterns = [
    path('api/v1/my-api/', MyAPIView.as_view()),
]
urlpatterns = format_suffix_patterns(urlpatterns)

33. Custom Django Template Engine

from django.template import Engine

# Create a custom Django template engine
template_engine = Engine(
    dirs=['myapp/templates'],
    app_dirs=True,
    context_processors=[
        'django.template.context_processors.request',
        'django.template.context_processors.i18n',
        'myapp.context_processors.my_context_processor',
    ],
)

34. Custom Django Cache

from django.core.cache import cache

# Create a custom Django cache
cache = cache('my_cache')

35. Custom Django Signals

from django.dispatch import Signal

# Create a custom Django signal
my_signal = Signal(providing_args=['sender', 'arg1', 'arg2'])

36. Custom Django Widgets

from django.forms import widgets

# Create a custom Django widget
class MyWidget(widgets.Widget):
    def render(self, name, value, attrs=None):
        # Render the widget