Django 1.11 使用paginator,Django自带分页器

使用自带的paginator分页器



接下来我编写一个 views ,名classify。
classify,将模拟请求购物网站的分类产品、并分页返回数据。完成如下任务:

  1. 接受两个参数,type,page。”type”:为请求的购物网站产品类别,如 0代表热门。1代表 家居
  2. 分类找到产品。分页返回。

为了方便将要传递的参数直接加载URL中。如:127.0.0.1:8000/classify/0/1/   请求的是 “type” = 0 ,”page” = 1的数据。

URLS

from django.conf.urls import url
from taobao import views

urlpatterns = [
  url(r'^classify/(\d+)/(\d+)/$',views.classify),
]

models

“category” :分类,0.代表热门;

class goods(models.Model):
    category = models.IntegerField('分类',default=0)
    goods_id = models.CharField('商品ID',max_length=10)
    goods_name = models.CharField('商品名',max_length=100,default='')
    goods_price = models.DecimalField('商品价格',max_digits=10,decimal_places=2)
    goods_Stock = models.IntegerField('商品库存',default=100)
    sales_Volume = models.IntegerField('销量',default=0)
    goods_introduce = models.CharField('商品简介',max_length=250,default='')
    def __str__(self):
        return self.goods_name

views

from taobao.models import goods

from django.core.paginator import Paginator ,PageNotAnInteger ,EmptyPage

def classify(req,type,page):
# 接收从url中传递的两个参数。
    context = {}

    context['type'] = int(type)
    if type == '0':
        goods_list = goods.objects.order_by('sales_Volume').all()
        # 按销量排序
    else:
        goods_list = goods.objects.all().filter(category = int(type)).order_by('sales_Volume').all()

    paginator = Paginator(goods_list,8)
    # 把商品分成 8 个一页。

    try:
        # 尝试获取请求的页数的 产品信息
        goodss = paginator.page(int(page))
    #请求页数错误
    except PageNotAnInteger:
        goodss = paginator.page(1)
    except EmptyPage:
        goodss = paginator.page(paginator.num_pages)

    context['goods'] = goodss
    return render(req,'classify.html',context)


html页面 classify.html

{% block content %}
    <div style="margin-top: 20px">
        <div class="w1240">
            <div class="line100">div>
            {# 根据type分类 显示不同图片汉字 #}
            <div class="icon"><img src="/static/images/type/{{ type }}.png"> <a>{% if type == 0 %}热门{% elif type == 1 %}美味餐厨{% elif type == 2 %}家纺家居{% endif %}a> div>
        div>
    div>

    <div class="w1240">
        <ul class="m-itemList m-itemList-level2Category">
            {% for i in goods %}
                <li class="item">
                    <div class="m-product">
                    <span>span>
                    <div class="hd">
                        <a href="/taobao/goods/{{ i.goods_id }}">
                            <img src="/static/images/goods/{{ i.goods_id}}.jpg" class ="img">
                        a>
                    div>

                    <div class="bd">
                         <a href="/taobao/goods/{{ i.goods_id }}">
                        <h4 class="name">{{ i.goods_name }}h4>
                         a>
                         <p style="color: #050505;font-weight: bold;text-align:center" >{{ i.goods_introduce }}p>
                        <p class="price">¥{{ i.goods_price }}p>
                        <hr>
                    div>
                div>
                li>
            {% endfor %}

        ul>
    <div style="padding-right:60px">
        <span style="float: right">
            <a href="/taobao/classify/{{ type }}/{{ goods.start_index }}"> 第一页 |   a>
            {% if goods.has_previous %}
                <a href="/taobao/classify/{{ type }}/{{ goods.previous_page_number }}"> 上一页  a>
                {% if  goods.has_next%}
                <span> | span>
            {% endif %}
            {% endif %}
            {% if goods.has_next %}
                <a href="/taobao/classify/{{ type }}/{{ goods.next_page_number }}"> 下一页  a>
            {% endif %}
             <a href="/taobao/classify/{{ type }}/{{ goods.end_index }}">| 末尾页 a>
        span>
    div>
    div>
    <div class="clear">div>

{% endblock %}

实例网站naxiehua.cn/taobao

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