如何在Django项目中组织大量页面的分页？

Posted 2023-02-24

【中文标题】如何在Django项目中组织大量页面的分页？

【英文标题】：How organize pagination with a large number of pages in Django project?

【发布时间】：2020-12-09 21:08:34

【问题描述】：

我有一个 view.py product_list：

...
from django.shortcuts import render, get_object_or_404
from .models import ProductCategory, Product, ProductDetail, ProductSpecialCategory
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
...
def product_list(request, category_slug=None, ):
category = None
categories = ProductCategory.objects.all()
object_list = Product.objects.filter(available=True, is_active=True)
if category_slug:
    category = get_object_or_404(ProductCategory, slug=category_slug)
    object_list = object_list.filter(category=category)
paginator = Paginator(object_list, 1)
page = request.GET.get('page')
try:
    products = paginator.page(page)
except PageNotAnInteger:
    products = paginator.page(1)
except EmptyPage:
    products = paginator.page(paginator.num_pages)
return render(request, 'shop/products/list_by_category/product_list.html', 'category': category,
                                                                            'categories': categories,
                                                                            'products': products,
                                                                            )

基于这个处理程序，我做了 pagination.html：

<nav aria-label="pagination" class="pagination_area">
<ul class="pagination">
    % if page.has_previous %
        <li class="page-item next">
            <a class="page-link" href="?page= page.previous_page_number ">
                <i class="fa fa-angle-left" aria-hidden="true"></i>
            </a>
        </li>
    % endif %
    % for i in page.paginator.page_range %
        % if page.number == i %
            <li class="page-item focused"><a class="page-link" href="?page= i "> i </a></li>
            % elif i > page.number|add:'-1' and i < page.number|add:'1' %
            % else %
            <li class="page-item"><a class="page-link" href="?page= i "> i </a></li>
        % endif %
    % endfor %
    % if page.has_next %
        <li class="page-item next">
            <a class="page-link" href="?page= page.next_page_number ">
                <i class="fa fa-angle-right" aria-hidden="true"></i>
            </a>
        </li>
    % endif %
</ul>

在界面上，我得到**结果**：

我想以这样的方式组织：

只显示三页，第一页是上一页，第二页是当前页，第三页是下一页。例如，不在此范围内的内容会被省略号隐藏。：

【参考方案1】：

我更改了 pagination.html。请试试这个。

<nav aria-label="pagination" class="pagination_area">
<div class="row">
  % if page.end_index > 0 %
  <div class="col-sm-12 col-md-5 d-none d-md-block">
    <p>Showing  page.start_index  to  page.end_index  of  page.paginator.count.</p>
  </div>
  % endif %
  % if page.paginator.num_pages > 1 %
  <div class="col-sm-12 col-md-7 dataTables_pager">
    <ul class="pagination">
      % if page.has_previous %

        <li class="page-item">
          <a class="page-link" data-page="1" href="?page= page.previous_page_number ">
            <i class="fa fa-angle-double-left"></i>
          </a>
        </li>
        % if page.previous_page_number > 1 %
          <li class="page-item">
            <a class="page-link " data-page="page.previous_page_number"  href="?page= page.previous_page_number ">
              <i class="fa fa-angle-left"></i>
            </a>
          </li>
        % endif %

      % endif %

      % if page.previous_page_number > 2 %
        <li class="page-item">
          <a class="page-link " data-page="page.number|add:'-2'" href="?page.number|add:'-2'">  page.number|add:"-2"  </a>
         </li>
        <li class="page-item">
          <a class="page-link " data-page="page.number|add:'-1'" href="?page=page.number|add:'-1'">  page.number|add:"-1"  </a>
        </li>
      % endif %

      <li class="page-item active"><span class="page-link "> page.number </span></li>

      % if page.paginator.num_pages > page.number|add:"2" %
        <li class="page-item">
          <a class="page-link " data-page="page.number|add:'1'" href="?page=page.number|add:'1'">  page.number|add:"1"  </a>
        </li>
        <li class="page-item">
          <a class="page-link " data-page="page.number|add:'2'" href="?page=page.number|add:'2'">  page.number|add:"2"  </a>
        </li>
      % endif %

      % if page.has_next %
        <li class="page-item">
          <a class="page-link " data-page="page.next_page_number" href="?page= page.next_page_number ">
            <i class="fa fa-angle-right"></i>
          </a>
        </li>

        <li class="page-item">
          <a class="page-link " data-page="page.paginator.num_pages" href="?page=page.paginator.num_pages">
            <i class="fa fa-angle-double-right"></i>
          </a>
        </li>
      % endif %
    </ul>
  </div>
  % endif %
</div>
</nav>

我的设计就是这样。如果您根据需要更改设计。 这里点击<<去第一页，>>去最后一页，<去上一页，>去下一页。

【讨论】：

我同意，我试过了，一切都很好！谢谢，现在我在模板中的显示级别理解了这个逻辑！