分页器paginator
准备工作
分页器使用前，先导入，顺便导入页面为空和页码不是整数异常
from django.core.paginator
import Paginator, EmptyPage, PageNotAnInteger
简单示范
以之前book表为例
book_list=
Book.objects.all()
paginator = Paginator(book_list, 10
)
print(
"count:",paginator.count)
#数据总条数
print(
"num_pages",paginator.num_pages)
#总页数
print(
"page_range",paginator.page_range)
#页码的列表
page1=paginator.page(1)
#第1页的page对象
for i
in page1:
#遍历第1页的所有数据对象
print(i)
print(page1.object_list)
#第1页的所有数据
page2=paginator.page(2
)
print(page2.has_next())
#是否有下一页
print(page2.next_page_number())
#下一页的页码
print(page2.has_previous())
#是否有上一页
print(page2.previous_page_number())
#上一页的页码
# 抛错
#page=paginator.page(12) # error:EmptyPage
#page=paginator.page("z") # error:PageNotAnInteger
完善版
模板
1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>Title
</title>
6 <link rel="stylesheet" href="\static\bootstrap-3.3.7-dist\css\bootstrap.css">
7 </head>
8 <body>
9 <div class="container">
10 <div class="row">
11 <div class="col-md-6 col-md-offset-3">
12 <table class="table table-striped table-bordered">
13 <thead>
14 <th>书名
</th>
15 <th>价格
</th>
16 </thead>
17 <tbody>
18 {% for book in current_page %}
19 <tr>
20 <td>{{ book.title }}
</td>
21 <td>{{ book.price }}
</td>
22 </tr>
23 {% endfor %}
24 </tbody>
25 </table>
26 <nav aria-label="Page navigation">
27 <ul class="pagination">
28 {% if current_page.has_previous %}
29 <li>
30 <a href="?page={{ current_page.previous_page_number }}" aria-label="Previous">
31 <span aria-hidden="true">«</span>
32 </a>
33 </li>
34 {% else %}
35 <li class="disabled">
36 <a href="#" aria-label="Previous">
37 <span aria-hidden="true">«</span>
38 </a>
39 </li>
40 {% endif %}
41
42 {% for page in page_range %}
43 {% if page == page_num %} {# current_page 是页面数据对象，不能在这里和page比较#}
44 <li class="active"><a href="?page={{ page }}">{{ page }}
</a></li>
45 {% else %}
46 <li><a href="?page={{ page }}">{{ page }}
</a></li>
47 {% endif %}
48
49 {% endfor %}
50
51 {% if current_page.has_next %}
52 <li>
53 <a href="?page={{ current_page.next_page_number }}" aria-label="Next">
54 <span aria-hidden="true">»</span>
55 </a>
56 </li>
57 {% else %}
58 <li class="disabled">
59 <a href="#" aria-label="Next">
60 <span aria-hidden="true">»</span>
61 </a>
62 </li>
63 {% endif %}
64
65 </ul>
66 </nav>
67 </div>
68 </div>
69 </div>
70 </body>
71 </html>
book.html
视图
1 def book(request):
2 book_list =
Book.objects.all()
3 paginator = Paginator(book_list, 5)
# 对book_list进行分页，每页5项
4 page_num = int(request.GET.get(
'page', 1))
# 获取页面，第一次没有获取请求，设置为1
5
6 # print("count:", paginator.count) # 数据总数
7 # print("num_pages", paginator.num_pages) # 总页数
8 # print("page_range", paginator.page_range) # 页码的列表
9
10 if paginator.num_pages < 11
:
11 page_range =
paginator.page_range
12 else:
13 if page_num < 6
:
14 page_range = range(1, 12
)
15 elif page_num + 5 >
paginator.num_pages:
16 page_range = range(paginator.num_pages - 10, paginator.num_pages + 1
)
17 else:
18 page_range = range(page_num - 5, page_num + 5
)
19 try:
20 current_page = paginator.page(page_num)
# 获取某一页数据对象
21 except EmptyPage:
22 current_page = paginator.page(1)
# 如果获取不到，使其获取第一页数据
23 return render(request,
'book.html', locals())
效果图
转载于:https://www.cnblogs.com/yuliangkaiyue/p/9939459.html
