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Extra class-based views for Django

Project description

django-extra-views-ng - The missing class-based generic views for Django

Django's class-based generic views are great, they let you accomplish a large number of web application design patterns in relatively few lines of code. They do have their limits though, and that's what this library of views aims to overcome.


Installing from pypi (using pip). ::

pip install django-extra-views-ng

Installing from github. ::

pip install -e git://

Features so far

- FormSet and ModelFormSet views - The formset equivalents of FormView and ModelFormView.
- InlineFormSetView - Lets you edit formsets related to a model (uses inlineformset_factory)
- CreateWithInlinesView and UpdateWithInlinesView - Lets you edit a model and its relations
- GenericInlineFormSetView, the equivalent of InlineFormSetView but for GenericForeignKeys
- Support for generic inlines in CreateWithInlinesView and UpdateWithInlinesView
- Support for naming each inline or formset with NamedFormsetsMixin
- SortableListMixin - Generic mixin for sorting functionality in your views
- SearchableListMixin - Generic mixin for search functionality in your views

Still to do

I'd like to add support for pagination in ModelFormSetView and its derivatives, the goal being to be able to mimic the change_list view in Django's admin. Currently this is proving difficult because of how Django's MultipleObjectMixin handles pagination.


Defining a FormSetView. ::

from extra_views import FormSetView

class AddressFormSet(FormSetView):
form_class = AddressForm
template_name = 'address_formset.html'

Defining a ModelFormSetView. ::

from extra_views import ModelFormSetView:

class ItemFormSetView(ModelFormSetView):
model = Item
template_name = 'item_formset.html'

Defining a CreateWithInlinesView and an UpdateWithInlinesView. ::

from extra_views import CreateWithInlinesView, UpdateWithInlinesView, InlineFormSet
from extra_views.generic import GenericInlineFormSet

class ItemInline(InlineFormSet):
model = Item

class TagInline(GenericInlineFormSet):
model = Tag

class CreateOrderView(CreateWithInlinesView):
model = Order
inlines = [ItemInline, TagInline]

class UpdateOrderView(UpdateWithInlinesView):
model = Order
inlines = [ItemInline, TagInline]

# Example URLs.
urlpatterns = patterns('',
url(r'^orders/new/$', CreateOrderView.as_view()),
url(r'^orders/(?P<pk>\d+)/$', UpdateOrderView.as_view()),

If you want to use granular access in templates you can name your inlines or formsets with NamedFormsetsMixin. ::

from extra_views import NamedFormsetsMixin

class CreateOrderView(CreateWithInlinesView):
model = Order
inlines = [ItemInline, TagInline]
inlines_names = ['Items', 'Tags']

You can add search ability for your classes by adding SearchableMixin and by setting search_fields::

from django.views.generic import ListView
from extra_views import SearchableListMixin

class SearchableItemListView(SearchableListMixin, ListView):
template_name = 'extra_views/item_list.html'
search_fields = ['name', 'sku']
model = Item

In this case ``object_list`` will be filtred if GET query will be provided (like /searchable/?q=query), or you
can manually override get_search_query method, to build custom search query

Define sorting in view. ::

from django.views.generic import ListView
from extra_views import SortableListMixin

class SortableItemListView(SortableListMixin, ListView):
sort_fields_aliases = [('name', 'by_name'), ('id', 'by_id'), ]
model = Item

You can hide real field names in query string by define sort_fields_aliases attribute (see example)
or show they as is by define sort_fields. SortableListMixin adds ``sort_helper`` variable of SortHelper class,
then in template you can use helper functions: ``{{ sort_helper.get_order_query_by_FOO }}``,
``{{ sort_helper.get_order_query_by_FOO_asc }}``, ``{{ sort_helper.get_order_query_by_FOO_desc }}`` and
``{{ sort_helper.is_sorted_by_FOO }}``

More descriptive examples to come.

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