Django学习笔记（6）分页

django自带分页

from django.core.paginator import Paginator
l = range(1,51)
page_obj = Paginator(l,20)
print(list(page_obj.page(2)))#获取第2页数据
print(page_obj.count)#总共多少条数据
print(page_obj.num_pages)#总共分了多少页

print(page_obj.page_range)#分页范围
cur_page = page_obj.page(2)
print(cur_page.has_previous())#判断是否有上一页
print(cur_page.previous_page_number())#返回上一页的页码，没有上一页会报错
print(cur_page.has_next())#判断是否有下一页
print(cur_page.next_page_number())#返回下一页的页码，没有下一页会报错
print(cur_page.has_other_pages())#判断是否有其他页，对只有一页数据判断
print(cur_page.paginator)#获取当前页的分页对象也就是page_obj

view.py 视图中使用分页

from django.core.paginator import Paginator
from .const import page_size
# Create your views here.
def index(request):#首页
    #数据来源数据库时，要引用到这个表的这个类
    # catagories = Category.objects.filter(is_delete=False)#获取所有数据
    page = request.GET.get('page',1)#从url获取page值，获取不到时取1
    limit = request.GET.get('limit',page_size)
    article = Article.objects.filter(is_delete=False)
    page_obj = Paginator(article,limit)
    page_data = page_obj.page(page)
    data = {'articles':page_data}
    return render(request,'index.html',data)#引用数据需要通过字典data引用

模板html中使用分页样式

{% if articles.has_other_pages %}
            <div class="pagelist">
            {% if articles.has_previous %}
                <a class="allpage" href="/index?page={{ articles.previous_page_number }}"><b>上一页</b></a>&nbsp;&nbsp;
            {% endif %}
            {% for page_num in articles.paginator.page_range %}
                <a href="/index?page={{ page_num }}&limit=10" class="curPage">{{page_num}}</a>&nbsp;&nbsp;
            {% endfor %}
            {% if articles.has_next %}
                <a href="#" onclick="page(2)">下一页</a>
            {% endif %}
            </div>
        {% endif %}