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django-pure-pagination 0.2.1

Description

Author:James Pacileo @ignighted
Version:0.2.0
Description:django-pure-pagination provides advanced pagination features and is fully compatible with existing code based on Django's core pagination module. (aka no need to rewrite code!)
Requirements:Django 1.2+
Special_Thanks:juandecarrion (Juande Carrion), twidi (Stéphane Angel), bebraw (Juho Vepsäläinen)

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

Features

  1. Uses same API as django.core.pagination and therefore is fully compatible with existing code.
  2. Has dynamic query string creation, which takes into consideration existing GET parameters.
  3. Out-of-the-box html rendering of the pagination
  4. 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 purepagination 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,
}

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)

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 %}
    <div>
        First name: {{ person }}
    </div>
{% endfor %}

{# The following renders the pagination html #}
<div id="pagination">
    {{ people.render }}
</div>

{% 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. {{ page.render }}

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 %}
        <a href="?{{ page_obj.previous_page_number.querystring }}" class="prev">&lsaquo;&lsaquo; {% trans "previous" %}</a>
    {% else %}
        <span class="disabled prev">&lsaquo;&lsaquo; {% trans "previous" %}</span>
    {% endif %}
    {% for page in page_obj.pages %}
        {% if page %}
            {% ifequal page page_obj.number %}
                <span class="current page">{{ page }}</span>
            {% else %}
                <a href="?{{ page.querystring }}" class="page">{{ page }}</a>
            {% endifequal %}
        {% else %}
            ...
        {% endif %}
    {% endfor %}
    {% if page_obj.has_next %}
        <a href="?{{ page_obj.next_page_number.querystring }}" class="next">{% trans "next" %} &rsaquo;&rsaquo;</a>
    {% else %}
        <span class="disabled next">{% trans "next" %} &rsaquo;&rsaquo;</span>
    {% 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 %}
            <a href="?{{ page_obj.previous_page_number.querystring }}" class="prev">&lsaquo;&lsaquo; {% trans "previous" %}</a>
        {% else %}
            <span class="disabled prev">&lsaquo;&lsaquo; {% trans "previous" %}</span>
        {% endif %}
        {% for page in page_obj.pages %}
            {% if page %}
                {% ifequal page page_obj.number %}
                    <span class="current page">{{ page }}</span>
                {% else %}
                    <a href="?{{ page.querystring }}" class="page">{{ page }}</a>
                {% endifequal %}
            {% else %}
                ...
            {% endif %}
        {% endfor %}
        {% if page_obj.has_next %}
            <a href="?{{ page_obj.next_page_number.querystring }}" class="next">{% trans "next" %} &rsaquo;&rsaquo;</a>
        {% else %}
            <span class="disabled next">{% trans "next" %} &rsaquo;&rsaquo;</span>
        {% endif %}
    </div>
    
  • my_app/myobject_list.html

    {# my_app/myobject_list.html #}
    {% extends 'base.html' %}
    
    {% block content %}
    
    {% for object in object_list %}
        <div>
            First name: {{ object.first_name }}
        </div>
    {% endfor %}
    
    {# The following renders the pagination html #}
    {% include "_pagination.html" %}
    
    {% endblock %}
    
 
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