Django实现分页
项目地址：https://github.com/ylpxzx/lifeblog
Django自带分页组件实现分页器
- 视图函数views.py中配置
from django.shortcuts import render,HttpResponse
from django.views.generic import View
from .models import Post
from django.core.paginator import Paginator,EmptyPage,PageNotAnInteger # 添加该行
class IndexView(View):
def get(self,request):
post_list = Post.objects.all().order_by("-id")
# 分页器
paginator = Paginator(post_list,6)
# print("count:",paginator.count) # 数据总数
# print("num_pages:",paginator.num_pages) # 总页数
# print("page_range:",paginator.page_range) # 页码列表
#
# 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("第一页的所有数据：",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
page = request.GET.get('page', 1)
currentPage = int(page)
try:
print(page)
post_list = paginator.page(page)
except PageNotAnInteger:
post_list = paginator.page(1)
except EmptyPage:
post_list = paginator.page(paginator.num_pages)
return render(request,"index.html",{'post_list':post_list,"paginator":paginator,"currentPage":currentPage})
- 模板文件中编写分页语句
{% block area %}
<div class="col-lg-8">
<div class="blog_left_sidebar">
{% for post in post_list %}
<li>{{ post }}</li>
{% endfor %}
<!-- 分页栏 -->
<nav class="blog-pagination justify-content-center d-flex">
<ul class="pagination">
{% if post_list.has_previous %}
<li class="page-item">
<a href="/index/?page={{ post_list.previous_page_number }}" class="page-link" aria-label="Previous">
<span aria-hidden="true">
<span class="lnr lnr-chevron-left"></span>
</span>
</a>
</li>
{% else %}
<li class="page-item">
<a href="#" class="page-link" aria-label="Previous">
<span aria-hidden="true">
<span class="lnr lnr-chevron-left"></span>
</span>
</a>
</li>
{% endif %}
{% for num in paginator.page_range %}
{% if num == currentPage %}
<li class="page-item active"><a href="/index/?page={{ num }}" class="page-link">{{ num }}</a></li>
{% else %}
<li class="page-item"><a href="/index/?page={{ num }}" class="page-link">{{ num }}</a></li>
{% endif %}
{% endfor %}
{% if post_list.has_next %}
<li class="page-item">
<a href="/index/?page={{ post_list.next_page_number }}" class="page-link" aria-label="Next">
<span aria-hidden="true">
<span class="lnr lnr-chevron-right"></span>
</span>
</a>
</li>
{% else %}
<li class="page-item">
<a href="#" class="page-link" aria-label="Next">
<span aria-hidden="true">
<span class="lnr lnr-chevron-right"></span>
</span>
</a>
</li>
{% endif %}
</ul>
</nav>
</div>
</div>
{% endblock %}
- 如果页数十分多时，换另外一种显示方式
class IndexView(View):
def get(self,request):
post_list = Post.objects.all().order_by("-id")
# 分页器
paginator = Paginator(post_list,6)
# print("count:",paginator.count) # 数据总数
# print("num_pages:",paginator.num_pages) # 总页数
# print("page_range:",paginator.page_range) # 页码列表
#
# 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("第一页的所有数据：",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
page = request.GET.get('page', 1)
currentPage = int(page)
# 如果页数十分多时，换另外一种显示方式
if paginator.num_pages > 11:
if currentPage - 5 < 1:
pageRange = range(1, 11)
elif currentPage + 5 > paginator.num_pages:
pageRange = range(currentPage - 5, paginator.num_pages + 1)
else:
pageRange = range(currentPage - 5, currentPage + 6)
else:
pageRange = paginator.page_range
try:
print(page)
post_list = paginator.page(page)
except PageNotAnInteger:
post_list = paginator.page(1)
except EmptyPage:
post_list = paginator.page(paginator.num_pages)
return render(request,"index.html",locals())
Django ListView视图实现分页
- 在视图views.py文件中配置paginate_by
from django.views.generic.list import ListView
from .models import Post,Category
class IndexView(ListView):
model = Post
template_name = "index.html"
context_object_name = "post_list"
paginate_by = 6
def get_queryset(self):
post_list = Post.objects.all().order_by("-id")
return post_list
def get_context_data(self, *, object_list=None, **kwargs):
kwargs['category_list'] = Category.objects.all().order_by('post_category') # 设置分类字段到模板上下文
content = super(IndexView,self).get_context_data(**kwargs)
print(content) # 检查是否有paginate对象
return content
- 模板文件中编写分页语句
<!-- 分页栏 -->
<nav class="blog-pagination justify-content-center d-flex">
<ul class="pagination">
{% if page_obj.has_previous %}
<li class="page-item">
<a href="{% url 'post:index' %}?page={{ page_obj.previous_page_number }}" class="page-link" aria-label="Previous">
<span aria-hidden="true">
<span class="lnr lnr-chevron-left"></span>
</span>
</a>
</li>
{% else %}
<li class="page-item">
<a href="#" class="page-link" aria-label="Previous">
<span aria-hidden="true">
<span class="lnr lnr-chevron-left"></span>
</span>
</a>
</li>
{% endif %}
{% for num in paginator.page_range %}
{% if num == page_obj.number %}
<li class="page-item active"><a href="{% url 'post:index' %}?page={{ num }}" class="page-link">{{ num }}</a></li>
{% else %}
<li class="page-item"><a href="{% url 'post:index' %}?page={{ num }}" class="page-link">{{ num }}</a></li>
{% endif %}
{% endfor %}
{% if page_obj.has_next %}
<li class="page-item">
<a href="{% url 'post:index' %}?page={{ page_obj.next_page_number }}" class="page-link" aria-label="Next">
<span aria-hidden="true">
<span class="lnr lnr-chevron-right"></span>
</span>
</a>
</li>
{% else %}
<li class="page-item">
<a href="#" class="page-link" aria-label="Next">
<span aria-hidden="true">
<span class="lnr lnr-chevron-right"></span>
</span>
</a>
</li>
{% endif %}
</ul>
</nav>
</div>
</div>
