django分页

参考文档：分页 |Django 文档
使用django内置的Paginator类

class IndexView(View):
    def get(self,request,cid=1,num=1):

        cid = int(cid)
        num = int(num)

        #查询所有类别信息
        categorys = Category.objects.all().order_by('id')

        #查询当前类别下的所有商品信息
        goodsList = Goods.objects.filter(category_id=cid).order_by('id')

        #分页（每页显示2条记录）
        pager = Paginator(goodsList,2)

        # #获取当前页的数据
        page_goodsList = pager.page(num)

        # 计算窗口的开始和结束页码
        window_size = 5  # 显示当前页前后各5个页码
        if num - window_size < 1:
            begin = 1
            end = min(num + window_size, pager.num_pages)
        else:
            begin = max(num - window_size, 1)
            end = min(num + window_size, pager.num_pages)

        pagelist = range(begin, end + 1)

        return render(request,'index.html',{'categorys':categorys,'goodsList':page_goodsList,'currentCid':cid,'pagelist':pagelist,'currentNum':num})

加载模板变量，其中goodsList.has_previous用来判断是否存在上一页，goodsList.has_next用来判断是否存在下一页

 <div class="goods-model">
            <div class="goods-content">
                {% for goods in goodsList %}
                    <div class="good">
                            <a href="/goodsdetails/{{ goods.id }}">
                                <img src="{{ goods.getGImg }}" width="285px" height="285px">
                                <p class="name">{{ goods.gname }}</p>
                                <div class="price">
                                    <i>￥</i>
                                    <p class="big">{{ goods.price }}</p>
                                    <s>￥{{ goods.oldprice }}</s>
                                </div>
                                <div class="sale">
                                    特卖
                                </div>
                            </a>
                        </div>

                {% endfor %}

            </div>
        </div>

    <div id="pager" style="text-align: center; font-size: 16px; overflow: hidden; margin-top: 10px;">
        {% if goodsList.has_previous %}
            <a href="/category/{{ currentCid }}/page/{{ goodsList.previous_page_number }}" style="display: inline-block; padding: 5px; margin: 5px;">上一页</a>
        {% endif %}

        {% for page in pagelist %}
            <a href="/category/{{ currentCid }}/page/{{ page }}" {% if currentNum == page %}class="pageCls"{% endif %} style="display: inline-block; padding: 5px; margin: 5px;">{{ page }}</a>
        {% endfor %}
        {% if goodsList.has_next %}
            <a href="/category/{{ currentCid }}/page/{{ goodsList.next_page_number }}" style="display: inline-block; padding: 5px; margin: 5px;">下一页</a>
        {% endif %}

    </div>