Django分页功能改造，一比一还原百度搜索的分页效果

# apps/blog/templatetags/blog_tags.py

from django import template

register = template.Library()

@register.inclusion_tag('blog/tags/pagecut.html', takes_context=True)
def load_pages(context, max_length=10):
    """
    自定义分页
    @param context: 上下文对象
    @param max_length: 最多显示的页面按钮数量
    @return:
    """
    paginator = context['paginator']
    page_obj = context['page_obj']
    # 分页总数不大于最大显示数，则直接显示所有页码
    if paginator.num_pages <= max_length:
        page_range = range(1, paginator.num_pages + 1)
    # 总页码大于总显示的时候，保证当前页码在中间
    else:
        left_num = max(page_obj.number - int(max_length / 2), 1)
        right_num = min(left_num + max_length - 1, paginator.num_pages)
        # 当前页面接近末尾的时候，也要保证能显示max_length个数
        if right_num - left_num < max_length - 1:
            left_num = right_num - max_length + 1
        page_range = range(left_num, right_num + 1)
    context['page_range'] = page_range
    return context

{% load blog_tags %}
<div class="page-inner text-center">
    {% if page_obj.has_previous %}
        {% deal_with_full_path request.get_full_path 'page' page_obj.previous_page_number as new_pre_page_path %}
        <a href="{{ new_pre_page_path }}"><span class="n">上一页</span></a>
    {% endif %}
    {% for page in page_range %}
        {% if page_obj.number == page %}
            <span class="page-active">{{ page }}</span>
        {% else %}
            {% deal_with_full_path request.get_full_path 'page' page as page_path %}
            <a href="{{ page_path }}"><span>{{ page }}</span></a>
        {% endif %}
    {% endfor %}
    {% if page_obj.has_next %}
        {% deal_with_full_path request.get_full_path 'page' page_obj.next_page_number as new_next_page_path %}
        <a href="{{ new_next_page_path }}"><span class="n">下一页</span></a>
    {% endif %}
</div>

from urllib.parse import urlparse, parse_qs, urlencode, urlunparse
from django import template

register = template.Library()

@register.simple_tag
def deal_with_full_path(full_path, key, value):
    """
    处理当前路径，包含参数的
    @param value: 参数值
    @param key: 要修改的参数，也可以新增
    @param full_path: /search/?q=python&page=2
    @return: 得到新的路径
    """
    parsed_url = urlparse(full_path)
    query_params = parse_qs(parsed_url.query)
    # 去除参数key
    query_params[key] = value
    # 重新生成URL
    updated_query_string = urlencode(query_params, doseq=True)
    updated_url = urlunparse(parsed_url._replace(query=updated_query_string))
    return updated_url

{% if is_paginated %}
    <div class="d-none d-md-block">{% load_pages 10 %}</div>
    <div class="d-md-none">{% load_pages 4 %}</div>
{% endif %}