Fixed #31103 -- Improved pagination topic documentation.
This commit is contained in:
parent
8be477be5c
commit
0f0abc20be
|
@ -10,8 +10,8 @@ The ``Paginator`` class
|
|||
|
||||
Under the hood, all methods of pagination use the
|
||||
:class:`~django.core.paginator.Paginator` class. It does all the heavy lifting
|
||||
of actually splitting a ``QuerySet`` into parts and handing them over to other
|
||||
components.
|
||||
of actually splitting a ``QuerySet`` into :class:`~django.core.paginator.Page`
|
||||
objects.
|
||||
|
||||
Example
|
||||
=======
|
||||
|
@ -82,52 +82,25 @@ Paginating a ``ListView``
|
|||
=========================
|
||||
|
||||
:class:`django.views.generic.list.ListView` provides a builtin way to paginate
|
||||
the displayed list. You can do this by adding
|
||||
the displayed list. You can do this by adding a
|
||||
:attr:`~django.views.generic.list.MultipleObjectMixin.paginate_by` attribute to
|
||||
your view class, for example::
|
||||
|
||||
from django.views.generic import ListView
|
||||
|
||||
from myapp.models import Contacts
|
||||
from myapp.models import Contact
|
||||
|
||||
class ContactsList(ListView):
|
||||
class ContactList(ListView):
|
||||
paginate_by = 2
|
||||
model = Contacts
|
||||
model = Contact
|
||||
|
||||
The only thing your users will be missing is a way to navigate to the next or
|
||||
previous page. To achieve this, add links to the next and previous page, like
|
||||
shown in the below example ``list.html``.
|
||||
|
||||
.. _using-paginator-in-view:
|
||||
|
||||
Using ``Paginator`` in a view
|
||||
=============================
|
||||
|
||||
Here's a slightly more complex example using
|
||||
:class:`~django.core.paginator.Paginator` in a view to paginate a queryset. We
|
||||
give both the view and the accompanying template to show how you can display
|
||||
the results. This example assumes you have a ``Contacts`` model that has
|
||||
already been imported.
|
||||
|
||||
The view function looks like this::
|
||||
|
||||
from django.core.paginator import Paginator
|
||||
from django.shortcuts import render
|
||||
|
||||
def listing(request):
|
||||
contact_list = Contacts.objects.all()
|
||||
paginator = Paginator(contact_list, 25) # Show 25 contacts per page
|
||||
|
||||
page = request.GET.get('page')
|
||||
contacts = paginator.get_page(page)
|
||||
return render(request, 'list.html', {'contacts': contacts})
|
||||
|
||||
In the template :file:`list.html`, you'll want to include navigation between
|
||||
pages along with any interesting information from the objects themselves:
|
||||
This limits the number of objects per page and adds a ``paginator`` and
|
||||
``page_obj`` to the ``context``. To allow your users to navigate between pages,
|
||||
add links to the next and previous page, in your template like this:
|
||||
|
||||
.. code-block:: html+django
|
||||
|
||||
{% for contact in contacts %}
|
||||
{% for contact in page_obj %}
|
||||
{# Each "contact" is a Contact model object. #}
|
||||
{{ contact.full_name|upper }}<br>
|
||||
...
|
||||
|
@ -135,18 +108,42 @@ pages along with any interesting information from the objects themselves:
|
|||
|
||||
<div class="pagination">
|
||||
<span class="step-links">
|
||||
{% if contacts.has_previous %}
|
||||
{% if page_obj.has_previous %}
|
||||
<a href="?page=1">« first</a>
|
||||
<a href="?page={{ contacts.previous_page_number }}">previous</a>
|
||||
<a href="?page={{ page_obj.previous_page_number }}">previous</a>
|
||||
{% endif %}
|
||||
|
||||
<span class="current">
|
||||
Page {{ contacts.number }} of {{ contacts.paginator.num_pages }}.
|
||||
Page {{ page_obj.number }} of {{ page_obj.paginator.num_pages }}.
|
||||
</span>
|
||||
|
||||
{% if contacts.has_next %}
|
||||
<a href="?page={{ contacts.next_page_number }}">next</a>
|
||||
<a href="?page={{ contacts.paginator.num_pages }}">last »</a>
|
||||
{% if page_obj.has_next %}
|
||||
<a href="?page={{ page_obj.next_page_number }}">next</a>
|
||||
<a href="?page={{ page_obj.paginator.num_pages }}">last »</a>
|
||||
{% endif %}
|
||||
</span>
|
||||
</div>
|
||||
|
||||
.. _using-paginator-in-view:
|
||||
|
||||
Using ``Paginator`` in a view function
|
||||
======================================
|
||||
|
||||
Here's an example using :class:`~django.core.paginator.Paginator` in a view
|
||||
function to paginate a queryset::
|
||||
|
||||
from django.core.paginator import Paginator
|
||||
from django.shortcuts import render
|
||||
|
||||
from myapp.models import Contact
|
||||
|
||||
def listing(request):
|
||||
contact_list = Contact.objects.all()
|
||||
paginator = Paginator(contact_list, 25) # Show 25 contacts per page.
|
||||
|
||||
page_number = request.GET.get('page')
|
||||
page_obj = paginator.get_page(page_number)
|
||||
return render(request, 'list.html', {'page_obj': page_obj})
|
||||
|
||||
In the template :file:`list.html`, you can include navigation between pages in
|
||||
the same way as in the template for the ``ListView`` above.
|
||||
|
|
Loading…
Reference in New Issue