django pure pagination文档

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发布于 2022-03-22 12:58:49

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发布于 2022-03-22 12:58:49

文章被收录于专栏：零域Blog

Introduction

The django app offers advanced pagination features without forcing major code changes within an existing project.

Django-pure-pagination is based upon Django’s core pagination module and is therefore compatible with the existing api.

Documentation for Django core pagination module <http://docs.djangoproject.com/en/dev/topics/pagination/>_

Features

Uses same API as django.core.pagination and therefore is fully compatible with existing code.
Has dynamic query string creation, which takes into consideration existing GET parameters.
Out-of-the-box html rendering of the pagination
Additional methods make it easier to render more advanced pagination templates.

Installation

Install package from PYPI:

pip install django-pure-pagination

or clone and install from repository:

git clone git@github.com:jamespacileo/django-pure-pagination.git
cd django-pure-pagination
python setup.py install

Add pure_pagination to INSTALLED_APPS

INSTALLED_APPS = (
    ...
    'pure_pagination',
)

Finally substitute from django.core.paginator import Paginator with from pure_pagination import Paginator

Settings

A few settings can be set within settings.py

PAGINATION_SETTINGS = {
    'PAGE_RANGE_DISPLAYED': 10,
    'MARGIN_PAGES_DISPLAYED': 2,

    'SHOW_FIRST_PAGE_WHEN_INVALID': True,
}

PAGE_RANGE_DISPLAYED is the number of pages neighbouring the current page which will be displayed (default is 10)

MARGIN_PAGES_DISPLAYED is the number of pages neighbouring the first and last page which will be displayed (default is 2)

Set SHOW_FIRST_PAGE_WHEN_INVALID to True when you want to just show first page when provided invalid page instead of 404 error

.. image:: http://i.imgur.com/LCqrt.gif

Usage example

Following is a simple example for function based views. For generic class-based views, see bellow.

view file: views.py

# views.py
from django.shortcuts import render_to_response

from pure_pagination import Paginator, EmptyPage, PageNotAnInteger


def index(request):

    try:
        page = request.GET.get('page', 1)
    except PageNotAnInteger:
        page = 1

    objects = ['john', 'edward', 'josh', 'frank']

    # Provide Paginator with the request object for complete querystring generation

    p = Paginator(objects, request=request)

    people = p.page(page)

    return render_to_response('index.html', {
        'people': people,
    }

template file: index.html

{# index.html #}
{% extends 'base.html' %}

{% block content %}

    {% for person in people.object_list %}
        
            First name: {{ person }}
        
    {% endfor %}

    {# The following renders the pagination html #}
    
        {{ people.render }}
    

    {% endblock %}

Usage

There a few different way you can make use of the features introduced within django-pure-pagination.

Easiest way to render the pagination is to call the render method i.e.

Alternatively you can access the Page object low level methods yourself

Special note: page_obj and current_page both point to the page object within the template.

{% load i18n %}
<div class="pagination">
    {% if page_obj.has_previous %}
            ‹‹ {% trans "previous" %}
        {% else %}
            ‹‹ {% trans "previous" %}
        {% endif %}
    {% for page in page_obj.pages %}
            {% if page %}
                {% ifequal page page_obj.number %}
                    {{ page }}
                {% else %}
                    {{ page }}
                {% endifequal %}
            {% else %}
                ...
            {% endif %}
        {% endfor %}
    {% if page_obj.has_next %}
            {% trans "next" %} ››
        {% else %}
            {% trans "next" %} ››
        {% endif %}
</div>

Generic Class-Based Views

Documentation for Django generic class-based views on https://docs.djangoproject.com/en/dev/ref/class-based-views/

view file:

views.py

  # views.py
  from django.views.generic import ListView

  from pure_pagination.mixins import PaginationMixin

  from my_app.models import MyModel

    class MyModelListView(PaginationMixin, ListView):
        # Important, this tells the ListView class we are paginating
        paginate_by = 10

        # Replace it for your model or use the queryset attribute instead
        object = MyModel

template files:

Note that the Django generic-based list view will include the object page_obj in the context. More information on https://docs.djangoproject.com/en/dev/ref/generic-views/#list-detail-generic-views

_pagination.html

  {% load i18n %}
  <div class="pagination">
      {% if page_obj.has_previous %}
                ‹‹ {% trans "previous" %}
            {% else %}
                ‹‹ {% trans "previous" %}
            {% endif %}
      {% for page in page_obj.pages %}
                {% if page %}
                    {% ifequal page page_obj.number %}
                        {{ page }}
                    {% else %}
                        {{ page }}
                    {% endifequal %}
                {% else %}
                    ...
                {% endif %}
            {% endfor %}
      {% if page_obj.has_next %}
                {% trans "next" %} ››
            {% else %}
                {% trans "next" %} ››
            {% endif %}
  </div>

my_app/myobject_list.html

 {# my_app/myobject_list.html #}
 {% extends 'base.html' %}

 {% block content %}

        {% for object in object_list %}
            
                First name: {{ object.first_name }}
            
        {% endfor %}

        {# The following renders the pagination html #}
        {% include "_pagination.html" %}

        {% endblock %}

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原始发表：2016-11-18，如有侵权请联系 cloudcommunity@tencent.com 删除

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