django中的分页设置

Posted 2020-08-28 learn21cn

1、在控制台中的展示

from django.core.paginator import Paginator

iter = ‘abcdefghijklmn‘
inator = Paginator(iter, 5)
page1 = inator.page(1)

page1.object_list
# 输出当前也的内容
‘abcde‘

page1.number
# 输出页码
1
page1.has_next()
# 输出是否有下一页
True

page1.next_page_number()
# 输出下一页的页码
2

print(page1.paginator.num_pages)
# 输出总的页数
3

2、用在web中会有很大的不同

1> html中的设置

使用ArtiInfo（参见views.py）而不是上面的page1，此外方法也没有括号

{% for item in ArtiInfo %}

<li>
    <img src="{% static ‘images/0001.jpg‘ %}" width="100" height="91">
    <div class="article-info">
        <h3><a href="#">{{ item.title }}</a></h3>
        <p class="meta-info">
            {% for tag in item.tags %}
            <span class="meta-cate">{{ tag }}</span>
            {% endfor %}
        </p>
        <p class="description">{{ item.des }}</p>
    </div>
    <div class="rate">
        <span class="rate-score">{{ item.scores }}</span>
    </div>
</li>
{% endfor %}
            
<div class="main-content-pagitor">
    {% if ArtiInfo.has_previous %}
    <a href="?page={{ ArtiInfo.previous_page_number }}">< Pre</a>
    {% endif %}
    <span> {{ ArtiInfo.number }} of {{ ArtiInfo.paginator.num_pages }} </span>
    {% if ArtiInfo.has_next %}
    <a href="?page={{ ArtiInfo.next_page_number }}">Next ></a>
    {% endif %}
</div>

2> models.py

from django.db import models
from mongoengine import *

class ArtiInfo(Document):
    des = StringField()
    title = StringField()
    scores = StringField()
    tags = ListField(StringField())
    # 对应数据库中已存在的数据表
    meta = {‘collection‘:‘articles‘}

3> views.py

，views.py
from django.shortcuts import render
from django_web.models import ArtiInfo
from django.core.paginator import Paginator

def index(request):
    limit = 5
    arti_info = ArtiInfo.objects[:20]
    paginatior = Paginator(arti_info,limit)
　　 # 参考上面html中是怎么设置的
    page = request.GET.get(‘page‘,1)
    print(request)
    print(request.GET)
    loaded = paginatior.page(page)
    context = {
        ‘ArtiInfo‘:loaded
    }
    return render(request,‘index.html‘,context)

注意，上面html中使用的ArtiInfo不是models.py中定义的类，而是在views.py中的context字典中的键ArtiInfo