42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
"""
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Tag to load a smart paginator that does not iterate over every page but has
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ellipses to truncate pages outside an adjacency
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"""
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from django import template
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register = template.Library()
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def paginator(context, request, adjacent_pages=2):
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"""
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Adds pagination context variables for use in displaying first, adjacent and
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last page links.
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"""
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paginator = context['paginator']
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page_obj = context['page_obj']
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# Widen the adjacency if near the start or near the end of the page set
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start_page = max(page_obj.number - adjacent_pages, 1)
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if start_page <= 3:
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start_page = 1
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end_page = page_obj.number + adjacent_pages + 1
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if end_page >= paginator.num_pages - 1:
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end_page = paginator.num_pages + 1
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# Generate a list of pages to include in the paginator template
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page_numbers = [n for n in range(start_page, end_page)
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if n > 0 and n <= paginator.num_pages]
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return {
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'page_obj': page_obj,
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'paginator': paginator,
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'page_numbers': page_numbers,
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'show_first': 1 not in page_numbers,
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'show_last': paginator.num_pages not in page_numbers,
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'request': request
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}
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register.inclusion_tag('base/paginator.html', takes_context=True)(paginator)
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