- Author:
- dokterbob
- Posted:
- September 16, 2010
- Language:
- Python
- Version:
- 1.2
- Score:
- 1 (after 1 ratings)
This one was adapted from Page numbers with ... like in Digg. See that one for more reference.
Digg-like page numbering using inclusion tag.
Usage in template:
{% load pagination %}
{% pagination yourpage %}
Inclusion template pagination.html:
{% if page.has_previous %}
<a href="?page={{ page.previous_page_number }}"><img src="{{ MEDIA_URL }}images/page/cyclenav_l.png" alt="Previous page" /></a>
{% endif %}
{% for pnum in begin %}
<a href="?page={{ pnum }}"{% if page.number == pnum %} class="active"{% endif %}>{{ pnum }}</a>
{% endfor %}
{% if middle %}
<strong>...</strong>
{% for pnum in middle %}
<a href="?page={{ pnum }}"{% if page.number == pnum %} class="active"{% endif %}>{{ pnum }}</a>
{% endfor %}
{% endif %}
{% if end %}
<strong>...</strong>
{% for pnum in end %}
<a href="?page={{ pnum }}"{% if page.number == pnum %} class="active"{% endif %}>{{ pnum }}</a>
{% endfor %}
{% endif %}
{% if page.has_next %}
<a href="?page={{ page.next_page_number }}"><img src="{{ MEDIA_URL }}images/page/cyclenav_l.png" alt="Previous page" /></a>
{% endif %}`
Produces:
previous_img 1 2 ... 4 5 6 7 8 9 10 11 12 ... 17 18 next_img
Or:
1 2 3 4 5 6 7 8 ... 17 18 next_img
Or:
previous_img 1 2 ... 10 11 12 13 14 15 16 17 18 next_img
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | from django import template
register = template.Library()
@register.inclusion_tag('pagination.html', takes_context=True)
def pagination(context, page, begin_pages=2, end_pages=2, before_current_pages=4, after_current_pages=4):
# Digg-like pages
before = max(page.number - before_current_pages - 1, 0)
after = page.number + after_current_pages
begin = page.paginator.page_range[:begin_pages]
middle = page.paginator.page_range[before:after]
end = page.paginator.page_range[-end_pages:]
last_page_number = end[-1]
def collides(firstlist, secondlist):
""" Returns true if lists collides (have same entries)
>>> collides([1,2,3,4],[3,4,5,6,7])
True
>>> collides([1,2,3,4],[5,6,7])
False
"""
return any(item in secondlist for item in firstlist)
# If middle and end has same entries, then end is what we want
if collides(middle, end):
end = range(max(page.number-before_current_pages, 1), last_page_number+1)
middle = []
# If begin and middle ranges has same entries, then begin is what we want
if collides(begin, middle):
begin = range(1, min(page.number + after_current_pages, last_page_number)+1)
middle = []
# If begin and end has same entries then begin is what we want
if collides(begin, end):
begin = range(1, last_page_number+1)
end = []
context.update({'page' : page,
'begin' : begin,
'middle' : middle,
'end' : end})
return context
|
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