django-列表分页和排序_python

概述视图函数views.py # 种类id 页码排序方式# restful api -> 请求一种资源# /list?type_id=种类id&page=页码&sort=排序方式# /list/种类id/页码/排序方式# /list/种类id/页码?sort=排序方式class ListView(View): ‘‘‘列表页‘‘‘ def get(self, r

视图函数vIEws.py

# 种类ID 页码 排序方式# restful API -> 请求一种资源# /List?type_ID=种类ID&page=页码&sort=排序方式# /List/种类ID/页码/排序方式# /List/种类ID/页码?sort=排序方式class ListVIEw(VIEw):    ‘‘‘列表页‘‘‘    def get(self,request,type_ID,page):        ‘‘‘显示列表页‘‘‘        # 获取种类信息        try:            type = GoodsType.objects.get(ID=type_ID)        except GoodsType.DoesNotExist:            # 种类不存在            return redirect(reverse(‘goods:index‘))        # 获取商品的分类信息        types = GoodsType.objects.all()        # 获取排序的方式 # 获取分类商品的信息        # sort=default 按照默认ID排序        # sort=price 按照商品价格排序        # sort=hot 按照商品销量排序        sort = request.GET.get(‘sort‘)        if sort == ‘price‘:            skus = GoodsSKU.objects.filter(type=type).order_by(‘price‘)        elif sort == ‘hot‘:            skus = GoodsSKU.objects.filter(type=type).order_by(‘-sales‘)        else:            sort = ‘default‘            skus = GoodsSKU.objects.filter(type=type).order_by(‘-ID‘)        # 对数据进行分页        paginator = Paginator(skus,1)        # 获取第page页的内容        try:            page = int(page)        except Exception as e:            page = 1        if page > paginator.num_pages:            page = 1        # 获取第page页的Page实例对象        skus_page = paginator.page(page)        # todo: 进行页码的控制，页面上最多显示5个页码        # 1.总页数小于5页，页面上显示所有页码        # 2.如果当前页是前3页，显示1-5页        # 3.如果当前页是后3页，显示后5页        # 4.其他情况，显示当前页的前2页，当前页，当前页的后2页        num_pages = paginator.num_pages        if num_pages < 5:            pages = range(1,num_pages+1)        elif page <= 3:            pages = range(1,6)        elif num_pages - page <= 2:            pages = range(num_pages-4,num_pages+1)        else:            pages = range(page-2,page+3)        # 获取新品信息        new_skus = GoodsSKU.objects.filter(type=type).order_by(‘-create_time‘)[:2]        # 获取用户购物车中商品的数目        user = request.user        cart_count = 0        if user.is_authenticated():            # 用户已登录            conn = get_redis_connection(‘default‘)            cart_key = ‘cart_%d‘ % user.ID            cart_count = conn.hlen(cart_key)        # 组织模板上下文        context = {‘type‘:type,‘types‘:types,‘skus_page‘:skus_page,‘new_skus‘:new_skus,‘cart_count‘:cart_count,‘pages‘:pages,‘sort‘:sort}        # 使用模板        return render(request,‘List.HTML‘,context)

模板

{% extends ‘base_detail_List.HTML‘ %}{% block Title %}天天生鲜-商品列表{% endblock Title %}{% block main_content %}    <div class="breadcrumb">        <a href="#">全部分类</a>        <span>></span>        <a href="#">{{ type.name }}</a>    </div>    <div class="main_wrap clearfix">        <div class="l_wrap fl clearfix">            <div class="new_goods">                <h3>新品推荐</h3>                <ul>                    {% for sku in new_skus %}                    <li>                        <a href="{% url ‘goods:detail‘ sku.ID %}"><img src="{{ sku.image.url }}"></a>                        <h4><a href="{% url ‘goods:detail‘ sku.ID %}">{{ sku.name }}</a></h4>                        <div class="prize">￥{{ sku.price }}</div>                    </li>                    {% endfor %}                </ul>            </div>        </div>        <div class="r_wrap fr clearfix">            <div class="sort_bar">                <a href="{% url ‘goods:List‘ type.ID 1 %}" {% if sort == ‘default‘ %}class="active"{% endif %}>默认</a>                <a href="{% url ‘goods:List‘ type.ID 1 %}?sort=price" {% if sort == ‘price‘ %}class="active"{% endif %}>价格</a>                <a href="{% url ‘goods:List‘ type.ID 1 %}?sort=hot" {% if sort == ‘hot‘ %}class="active"{% endif %}>人气</a>            </div>            <ul class="goods_type_List clearfix">                {% for sku in skus_page %}                <li>                    <a href="{% url ‘goods:detail‘ sku.ID %}"><img src="{{ sku.image.url }}"></a>                    <h4><a href="{% url ‘goods:detail‘ sku.ID %}">{{ sku.name }}</a></h4>                    <div class="operate">                        <span class="prize">￥{{ sku.price }}</span>                        <span class="unit">{{ sku.price}}/{{ sku.unite }}</span>                        <a href="#" class="add_goods" Title="加入购物车"></a>                    </div>                </li>                {% endfor %}            </ul>            <div class="pagenation">                {% if skus_page.has_prevIoUs %}                <a href="{% url ‘goods:List‘ type.ID skus_page.prevIoUs_page_number %}?sort={{ sort }}"><上一页</a>                {% endif %}                {% for pindex in pages %}                    {% if pindex == skus_page.number %}                        <a href="{% url ‘goods:List‘ type.ID pindex %}?sort={{ sort }}" class="active">{{ pindex }}</a>                    {% else %}                        <a href="{% url ‘goods:List‘ type.ID pindex %}?sort={{ sort }}">{{ pindex }}</a>                    {% endif %}                {% endfor %}                {% if skus_page.has_next %}                <a href="{% url ‘goods:List‘ type.ID skus_page.next_page_number %}?sort={{ sort }}">下一页></a>                {% endif %}            </div>        </div>    </div>{% endblock main_content %}