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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.

Installation
------------

Installing from pypi (using pip). ::

pip install django-extra-views-ng

Installing from github. ::

pip install -e git://github.com/hovel/django-extra-views.git#egg=django-extra-views


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.

Examples
--------

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

Also you can define `search_fields` as list of tuples (e.g. `[('name', 'exact', ), 'sku']`)
to provide custom lookups for searching. Default lookup is `icontains`

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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