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Updated docs for dates generic views. 

Fixes #18245. Refs #3542.
This commit is contained in:
Aymeric Augustin 2012-09-08 12:20:20 -04:00
parent 3da43c1111
commit 7207327dd3
3 changed files with 196 additions and 108 deletions
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3
django/views/generic/dates.py
View File

@ -372,6 +372,9 @@ class BaseDateListView(MultipleObjectMixin, DateMixin, View):
return qs
def get_date_list_period(self):
"""
Get the aggregation period for the list of dates: 'year', 'month', or 'day'.
"""
return self.date_list_period
def get_date_list(self, queryset, date_type=None):

128
docs/ref/class-based-views/generic-date-based.txt
View File

@ -2,13 +2,15 @@
Generic date views
==================
Date-based generic views (in the module :mod:`django.views.generic.dates`)
are views for displaying drilldown pages for date-based data.
.. module:: django.views.generic.dates
Date-based generic views, provided in :mod:`django.views.generic.dates`, are
views for displaying drilldown pages for date-based data.
ArchiveIndexView
----------------
.. class:: django.views.generic.dates.ArchiveIndexView
.. class:: ArchiveIndexView
A top-level index page showing the "latest" objects, by date. Objects with
a date in the *future* are not included unless you set ``allow_future`` to
@ -36,7 +38,7 @@ ArchiveIndexView
YearArchiveView
---------------
.. class:: django.views.generic.dates.YearArchiveView
.. class:: YearArchiveView
A yearly archive page showing all available months in a given year. Objects
with a date in the *future* are not displayed unless you set
@ -58,13 +60,15 @@ YearArchiveView
A boolean specifying whether to retrieve the full list of objects for
this year and pass those to the template. If ``True``, the list of
objects will be made available to the context. By default, this is
objects will be made available to the context. If ``False``, the
``None`` queryset will be used as the object list. By default, this is
``False``.
.. method:: get_make_object_list()
Determine if an object list will be returned as part of the context. If
``False``, the ``None`` queryset will be used as the object list.
Determine if an object list will be returned as part of the context.
Returns :attr:`~YearArchiveView.make_object_list` by default.
**Context**
@ -80,16 +84,18 @@ YearArchiveView
:class:`datetime.datetime<python:datetime.datetime>` objects, in
ascending order.
* ``year``: A :class:`datetime.date<python:datetime.date>` object
* ``year``: A :class:`~datetime.date` object
representing the given year.
* ``next_year``: A :class:`datetime.date<python:datetime.date>` object
representing the first day of the next year. If the next year is in the
future, this will be ``None``.
* ``next_year``: A :class:`~datetime.date` object
representing the first day of the next year, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
* ``previous_year``: A :class:`datetime.date<python:datetime.date>` object
representing the first day of the previous year. Unlike ``next_year``,
this will never be ``None``.
* ``previous_year``: A :class:`~datetime.date` object
representing the first day of the previous year, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
**Notes**
@ -98,7 +104,7 @@ YearArchiveView
MonthArchiveView
----------------
.. class:: django.views.generic.dates.MonthArchiveView
.. class:: MonthArchiveView
A monthly archive page showing all objects in a given month. Objects with a
date in the *future* are not displayed unless you set ``allow_future`` to
@ -131,16 +137,18 @@ MonthArchiveView
:class:`datetime.datetime<python:datetime.datetime>` objects, in
ascending order.
* ``month``: A :class:`datetime.date<python:datetime.date>` object
* ``month``: A :class:`~datetime.date` object
representing the given month.
* ``next_month``: A :class:`datetime.date<python:datetime.date>` object
representing the first day of the next month. If the next month is in the
future, this will be ``None``.
* ``next_month``: A :class:`~datetime.date` object
representing the first day of the next month, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
* ``previous_month``: A :class:`datetime.date<python:datetime.date>` object
representing the first day of the previous month. Unlike ``next_month``,
this will never be ``None``.
* ``previous_month``: A :class:`~datetime.date` object
representing the first day of the previous month, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
**Notes**
@ -149,7 +157,7 @@ MonthArchiveView
WeekArchiveView
---------------
.. class:: django.views.generic.dates.WeekArchiveView
.. class:: WeekArchiveView
A weekly archive page showing all objects in a given week. Objects with a
date in the *future* are not displayed unless you set ``allow_future`` to
@ -175,16 +183,18 @@ WeekArchiveView
:class:`~django.views.generic.dates.BaseDateListView`), the template's
context will be:
* ``week``: A :class:`datetime.date<python:datetime.date>` object
* ``week``: A :class:`~datetime.date` object
representing the first day of the given week.
* ``next_week``: A :class:`datetime.date<python:datetime.date>` object
representing the first day of the next week. If the next week is in the
future, this will be ``None``.
* ``next_week``: A :class:`~datetime.date` object
representing the first day of the next week, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
* ``previous_week``: A :class:`datetime.date<python:datetime.date>` object
representing the first day of the previous week. Unlike ``next_week``,
this will never be ``None``.
* ``previous_week``: A :class:`~datetime.date` object
representing the first day of the previous week, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
**Notes**
@ -193,7 +203,7 @@ WeekArchiveView
DayArchiveView
--------------
.. class:: django.views.generic.dates.DayArchiveView
.. class:: DayArchiveView
A day archive page showing all objects in a given day. Days in the future
throw a 404 error, regardless of whether any objects exist for future days,
@ -220,24 +230,28 @@ DayArchiveView
:class:`~django.views.generic.dates.BaseDateListView`), the template's
context will be:
* ``day``: A :class:`datetime.date<python:datetime.date>` object
* ``day``: A :class:`~datetime.date` object
representing the given day.
* ``next_day``: A :class:`datetime.date<python:datetime.date>` object
representing the next day. If the next day is in the future, this will be
``None``.
* ``next_day``: A :class:`~datetime.date` object
representing the next day, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
* ``previous_day``: A :class:`datetime.date<python:datetime.date>` object
representing the previous day. Unlike ``next_day``, this will never be
``None``.
* ``previous_day``: A :class:`~datetime.date` object
representing the previous day, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
* ``next_month``: A :class:`datetime.date<python:datetime.date>` object
representing the first day of the next month. If the next month is in the
future, this will be ``None``.
* ``next_month``: A :class:`~datetime.date` object
representing the first day of the next month, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
* ``previous_month``: A :class:`datetime.date<python:datetime.date>` object
representing the first day of the previous month. Unlike ``next_month``,
this will never be ``None``.
* ``previous_month``: A :class:`~datetime.date` object
representing the first day of the previous month, according to
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
**Notes**
@ -246,7 +260,7 @@ DayArchiveView
TodayArchiveView
----------------
.. class:: django.views.generic.dates.TodayArchiveView
.. class:: TodayArchiveView
A day archive page showing all objects for *today*. This is exactly the
same as :class:`django.views.generic.dates.DayArchiveView`, except today's
@ -271,7 +285,7 @@ TodayArchiveView
DateDetailView
--------------
.. class:: django.views.generic.dates.DateDetailView
.. class:: DateDetailView
A page representing an individual object. If the object has a date value in
the future, the view will throw a 404 error by default, unless you set
@ -293,6 +307,22 @@ DateDetailView
.. note::
All of the generic views listed above have matching Base* views that only
differ in that the they do not include the
:class:`~django.views.generic.detail.SingleObjectTemplateResponseMixin`.
All of the generic views listed above have matching ``Base`` views that
only differ in that the they do not include the
:class:`~django.views.generic.detail.SingleObjectTemplateResponseMixin`:
.. class:: BaseArchiveIndexView
.. class:: BaseYearArchiveView
.. class:: BaseMonthArchiveView
.. class:: BaseWeekArchiveView
.. class:: BaseDayArchiveView
.. class:: BaseTodayArchiveView
.. class:: BaseDateDetailView

173
docs/ref/class-based-views/mixins-date-based.txt
View File

@ -2,11 +2,12 @@
Date-based mixins
=================
.. currentmodule:: django.views.generic.dates
YearMixin
---------
.. class:: django.views.generic.dates.YearMixin
.. class:: YearMixin
A mixin that can be used to retrieve and provide parsing information for a
year component of a date.
@ -20,29 +21,45 @@ YearMixin
.. attribute:: year
**Optional** The value for the year (as a string). By default, set to
**Optional** The value for the year, as a string. By default, set to
``None``, which means the year will be determined using other means.
.. method:: get_year_format()
Returns the :func:`~time.strftime` format to use when parsing the year. Returns
:attr:`YearMixin.year_format` by default.
Returns the :func:`~time.strftime` format to use when parsing the
year. Returns :attr:`~YearMixin.year_format` by default.
.. method:: get_year()
Returns the year for which this view will display data. Tries the
following sources, in order:
Returns the year for which this view will display data, as a string.
Tries the following sources, in order:
* The value of the :attr:`YearMixin.year` attribute.
* The value of the `year` argument captured in the URL pattern
* The value of the `year` argument captured in the URL pattern.
* The value of the `year` GET query argument.
Raises a 404 if no valid year specification can be found.
.. method:: get_next_year(date)
Returns a date object containing the first day of the year after the
date provided. This function can also return ``None`` or raise an
:class:`~django.http.Http404` exception, depending on the values of
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
.. method:: get_previous_year(date)
Returns a date object containing the first day of the year before the
date provided. This function can also return ``None`` or raise an
:class:`~django.http.Http404` exception, depending on the values of
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
MonthMixin
----------
.. class:: django.views.generic.dates.MonthMixin
.. class:: MonthMixin
A mixin that can be used to retrieve and provide parsing information for a
month component of a date.
@ -51,26 +68,26 @@ MonthMixin
.. attribute:: month_format
The :func:`~time.strftime` format to use when parsing the month. By default, this is
``'%b'``.
The :func:`~time.strftime` format to use when parsing the month. By
default, this is ``'%b'``.
.. attribute:: month
**Optional** The value for the month (as a string). By default, set to
**Optional** The value for the month, as a string. By default, set to
``None``, which means the month will be determined using other means.
.. method:: get_month_format()
Returns the :func:`~time.strftime` format to use when parsing the month. Returns
:attr:`MonthMixin.month_format` by default.
Returns the :func:`~time.strftime` format to use when parsing the
month. Returns :attr:`~MonthMixin.month_format` by default.
.. method:: get_month()
Returns the month for which this view will display data. Tries the
following sources, in order:
Returns the month for which this view will display data, as a string.
Tries the following sources, in order:
* The value of the :attr:`MonthMixin.month` attribute.
* The value of the `month` argument captured in the URL pattern
* The value of the `month` argument captured in the URL pattern.
* The value of the `month` GET query argument.
Raises a 404 if no valid month specification can be found.
@ -78,20 +95,23 @@ MonthMixin
.. method:: get_next_month(date)
Returns a date object containing the first day of the month after the
date provided. Returns ``None`` if mixed with a view that sets
``allow_future = False``, and the next month is in the future. If
``allow_empty = False``, returns the next month that contains data.
date provided. This function can also return ``None`` or raise an
:class:`~django.http.Http404` exception, depending on the values of
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
.. method:: get_prev_month(date)
Returns a date object containing the first day of the month before the
date provided. If ``allow_empty = False``, returns the previous month
that contained data.
date provided. This function can also return ``None`` or raise an
:class:`~django.http.Http404` exception, depending on the values of
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
DayMixin
--------
.. class:: django.views.generic.dates.DayMixin
.. class:: DayMixin
A mixin that can be used to retrieve and provide parsing information for a
day component of a date.
@ -100,46 +120,50 @@ DayMixin
.. attribute:: day_format
The :func:`~time.strftime` format to use when parsing the day. By default, this is
``'%d'``.
The :func:`~time.strftime` format to use when parsing the day. By
default, this is ``'%d'``.
.. attribute:: day
**Optional** The value for the day (as a string). By default, set to
**Optional** The value for the day, as a string. By default, set to
``None``, which means the day will be determined using other means.
.. method:: get_day_format()
Returns the :func:`~time.strftime` format to use when parsing the day. Returns
:attr:`DayMixin.day_format` by default.
Returns the :func:`~time.strftime` format to use when parsing the day.
Returns :attr:`~DayMixin.day_format` by default.
.. method:: get_day()
Returns the day for which this view will display data. Tries the
following sources, in order:
Returns the day for which this view will display data, as a string.
Tries the following sources, in order:
* The value of the :attr:`DayMixin.day` attribute.
* The value of the `day` argument captured in the URL pattern
* The value of the `day` argument captured in the URL pattern.
* The value of the `day` GET query argument.
Raises a 404 if no valid day specification can be found.
.. method:: get_next_day(date)
Returns a date object containing the next day after the date provided.
Returns ``None`` if mixed with a view that sets ``allow_future = False``,
and the next day is in the future. If ``allow_empty = False``, returns
the next day that contains data.
Returns a date object containing the next valid day after the date
provided. This function can also return ``None`` or raise an
:class:`~django.http.Http404` exception, depending on the values of
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
.. method:: get_prev_day(date)
Returns a date object containing the previous day. If
``allow_empty = False``, returns the previous day that contained data.
Returns a date object containing the previous valid day. This function
can also return ``None`` or raise an :class:`~django.http.Http404`
exception, depending on the values of
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
WeekMixin
---------
.. class:: django.views.generic.dates.WeekMixin
.. class:: WeekMixin
A mixin that can be used to retrieve and provide parsing information for a
week component of a date.
@ -148,23 +172,24 @@ WeekMixin
.. attribute:: week_format
The :func:`~time.strftime` format to use when parsing the week. By default, this is
``'%U'``.
The :func:`~time.strftime` format to use when parsing the week. By
default, this is ``'%U'``, which means the week starts on Sunday. Set
it to ``'%W'`` if your week starts on Monday.
.. attribute:: week
**Optional** The value for the week (as a string). By default, set to
**Optional** The value for the week, as a string. By default, set to
``None``, which means the week will be determined using other means.
.. method:: get_week_format()
Returns the :func:`~time.strftime` format to use when parsing the week. Returns
:attr:`WeekMixin.week_format` by default.
Returns the :func:`~time.strftime` format to use when parsing the
week. Returns :attr:`~WeekMixin.week_format` by default.
.. method:: get_week()
Returns the week for which this view will display data. Tries the
following sources, in order:
Returns the week for which this view will display data, as a string.
Tries the following sources, in order:
* The value of the :attr:`WeekMixin.week` attribute.
* The value of the `week` argument captured in the URL pattern
@ -172,11 +197,26 @@ WeekMixin
Raises a 404 if no valid week specification can be found.
.. method:: get_next_week(date)
Returns a date object containing the first day of the week after the
date provided. This function can also return ``None`` or raise an
:class:`~django.http.Http404` exception, depending on the values of
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
.. method:: get_prev_week(date)
Returns a date object containing the first day of the week before the
date provided. This function can also return ``None`` or raise an
:class:`~django.http.Http404` exception, depending on the values of
:attr:`~BaseDateListView.allow_empty` and
:attr:`~DateMixin.allow_future`.
DateMixin
---------
.. class:: django.views.generic.dates.DateMixin
.. class:: DateMixin
A mixin class providing common behavior for all date-based views.
@ -186,7 +226,7 @@ DateMixin
The name of the ``DateField`` or ``DateTimeField`` in the
``QuerySet``'s model that the date-based archive should use to
determine the objects on the page.
determine the list of objects to display on the page.
When :doc:`time zone support </topics/i18n/timezones>` is enabled and
``date_field`` is a ``DateTimeField``, dates are assumed to be in the
@ -210,26 +250,26 @@ DateMixin
.. method:: get_date_field()
Returns the name of the field that contains the date data that this
view will operate on. Returns :attr:`DateMixin.date_field` by default.
view will operate on. Returns :attr:`~DateMixin.date_field` by default.
.. method:: get_allow_future()
Determine whether to include "future" objects on this page, where
"future" means objects in which the field specified in ``date_field``
is greater than the current date/time. Returns
:attr:`DateMixin.allow_future` by default.
:attr:`~DateMixin.allow_future` by default.
BaseDateListView
----------------
.. class:: django.views.generic.dates.BaseDateListView
.. class:: BaseDateListView
A base class that provides common behavior for all date-based views. There
won't normally be a reason to instantiate
:class:`~django.views.generic.dates.BaseDateListView`; instantiate one of
the subclasses instead.
While this view (and it's subclasses) are executing, ``self.object_list``
While this view (and its subclasses) are executing, ``self.object_list``
will contain the list of objects that the view is operating upon, and
``self.date_list`` will contain the list of dates for which data is
available.
@ -245,10 +285,18 @@ BaseDateListView
A boolean specifying whether to display the page if no objects are
available. If this is ``True`` and no objects are available, the view
will display an empty page instead of raising a 404. By default, this
is ``False``.
will display an empty page instead of raising a 404.
.. method:: get_dated_items():
This is identical to :attr:`MultipleObjectMixin.allow_empty`, except
for the default value, which is ``False``.
.. attribute:: date_list_period
**Optional** A string defining the aggregation period for
``date_list``. It must be one of ``'year'`` (default), ``'month'``, or
``'day'``.
.. method:: get_dated_items()
Returns a 3-tuple containing (``date_list``, ``object_list``,
``extra_context``).
@ -265,10 +313,17 @@ BaseDateListView
``lookup``. Enforces any restrictions on the queryset, such as
``allow_empty`` and ``allow_future``.
.. method:: get_date_list(queryset, date_type)
.. method:: get_date_list_period()
Returns the list of dates of type ``date_type`` for which
``queryset`` contains entries. For example, ``get_date_list(qs,
'year')`` will return the list of years for which ``qs`` has entries.
See :meth:`~django.db.models.query.QuerySet.dates()` for the
ways that the ``date_type`` argument can be used.
Returns the aggregation period for ``date_list``. Returns
:attr:`~BaseDateListView.date_list_period` by default.
.. method:: get_date_list(queryset, date_type=None)
Returns the list of dates of type ``date_type`` for which ``queryset``
contains entries. For example, ``get_date_list(qs, 'year')`` will
return the list of years for which ``qs`` has entries. If
``date_type`` isn't provided, the result of
:meth:`BaseDateListView.get_date_list_period` is used. See
:meth:`~django.db.models.query.QuerySet.dates()` for the ways that the
``date_type`` argument can be used.