06 全文检索

class ListView(View):
    def get(self,request,catagory_id,page):
        # 取出当前页的分类商品,商品的主页

        sort = request.GET.get("sort",‘default‘)

        if sort not in ("price", "hot"):
            sort = "default"

        try:
            catagory = GoodsCategory.objects.get(id=catagory_id)
        except GoodsCategory.DoesNotExist:
            return redirect(reverse("goods:index"))

        # 取出全部商品的分类
        catagorys = GoodsCategory.objects.all()

        # 获取新品推荐的连个商品
        new_skus = GoodsSKU.objects.filter(category=catagory).order_by("-create_time")[:2]

        # 根据当前的分类商品，取出所有的商品
        if sort == "price":
            goods_skus = GoodsSKU.objects.filter(category=catagory).order_by("price")
        elif sort == "hot":
            goods_skus = GoodsSKU.objects.filter(category=catagory).order_by("sales")
        else:
            goods_skus = GoodsSKU.objects.filter(category=catagory)

        # 获取购物车的数量
        cart_num = 0
        redis_con = get_redis_connection(‘default‘)
        if request.user.is_authenticated:
            cart = redis_con.hgetall(‘cart_%s‘ % request.user.id)
            for count in cart.values():
                cart_num += int(count)


        # 把当前分类的全部商品分页处理
        paginator=Paginator(goods_skus,1)
        # 获取当前也的数据
        page = int(page)
        try:
            page_skus=paginator.page(page)
        except EmptyPage:
            page_skus = paginator.page(1)

        # 查看当前页面的总数
        num_pages = paginator.num_pages
        # 页面展示的页数

        # 如果页数超过5页 页数属于最后三页  页面总数 paginator.num_pages    paginator.num_pages - page < 3
        # 其他剩余情况

        # 如果页数小于5页,展示全部的页数
        if num_pages <= 5:
            page_list = range(1, num_pages + 1)
        # 如果页数超过5页 页数属于前三页 page<=3,战士前5页
        elif page <= 3:
            # 页数属于前三页, 页数展示前5页
            page_list = range(1, 6)
        elif num_pages - page < 3:
            # 页数属于最后三页
            page_list = range(num_pages - 4, num_pages + 1)
        else:
            page_list = range(page - 2, page + 3)

        context = {
            "catagory": catagory,
            "catagorys": catagorys,
            "page_skus": page_skus,
            "new_skus": new_skus,
            "page_list": page_list,
            ‘sort‘: sort,
            ‘cart_num‘: cart_num

        }

        return render(request, "list.html", context)

{% extends "base.html" %}
{% load staticfiles %}
{% block title %}天天生鲜-商品列表{% endblock %}

{% block body %}
    <div class="navbar_con">
        <div class="navbar clearfix">
            <div class="subnav_con fl">
                <h1>全部商品分类</h1>    
                <span></span>            
                <ul class="subnav">
                    {% for category in categorys %}
                    <li><a href="{% url ‘goods:list‘ category.id 1 %}" class="{{ category.logo }}">{{ category.name }}</a></li>
                    {% endfor %}
                </ul>
            </div>
            <ul class="navlist fl">
                <li><a href="">首页</a></li>
                <li class="interval">|</li>
                <li><a href="">手机生鲜</a></li>
                <li class="interval">|</li>
                <li><a href="">抽奖</a></li>
            </ul>
        </div>
    </div>

    <div class="breadcrumb">
        <a href="{% url ‘goods:index‘ %}">全部分类</a>
        <span>></span>
        <a href="{% url ‘goods:list‘ category.id 1 %}">新鲜水果</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.default_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‘ category.id 1 %}?sort=default" {% if sort == "default" %}class="active"{% endif %}>默认</a>
                <a href="{% url ‘goods:list‘ category.id 1 %}?sort=price" {% if sort == "price" %}class="active"{% endif %}>价格</a>
                <a href="{% url ‘goods:list‘ category.id 1 %}?sort=hot" {% if sort == "hot" %}class="active"{% endif %}>人气</a>
            </div>

            <ul class="goods_type_list clearfix">
                {% for sku in page_skus %}
                <li>
                    <a href="{% url ‘goods:detail‘ sku.id %}"><img src="{{ sku.default_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.unit }}</span>
                        <a href="#" class="add_goods" title="加入购物车"></a>
                    </div>
                </li>
                {%  endfor %}
            </ul>

            <div class="pagenation">
                {%  if page_skus.has_previous %}
                <a href="{{ page_skus.previous_page_number }}">上一页</a>
                {% endif %}
                {%  for p in  page_list %}
                <a href="{% url ‘goods:list‘ category.id p %}?sort={{ sort }}" {% if p == page_skus.number %}class="active"{% endif %}>{{ p }}</a>
                {%  endfor %}
                {%  if page_skus.has_next %}
                <a href="{{ page_skus.next_page_number }}">下一页></a>
                {% endif %}
            </div>
        </div>
    </div>
{% endblock %}

{% extends ‘base.html‘ %}

{% load staticfiles %}

{% block title %}天天生鲜-搜索结果{% endblock %}

{% block search_bar %}
    <div class="search_bar clearfix">
        <a href="{% url ‘goods:index‘ %}" class="logo fl"><img src="{% static ‘images/logo.png‘ %}"></a>
        <div class="sub_page_name fl">|&nbsp;&nbsp;&nbsp;&nbsp;搜索结果</div>
        <div class="search_con fr">
            <form action="/search/" method="get">
            <input type="text" class="input_text fl" name="q" placeholder="搜索商品">
            <input type="submit" class="input_btn fr" value="搜索">
            </form>
        </div>
    </div>
{% endblock %}

{% block body %}
    <div class="main_wrap clearfix">
        <ul class="goods_type_list clearfix">
        {% for result in page %}
            <li>
                <a href="{% url ‘goods:detail‘ result.object.id %}"><img src="{{ result.object.default_image.url }}"></a>
                <h4><a href="{% url ‘goods:detail‘ result.object.id %}">{{result.object.name}}</a></h4>
                <div class="operate">
                    <span class="prize">￥{{ result.object.price }}</span>
                    <span class="unit">{{ result.object.price }}/{{ result.object.unit }}</span>
                </div>
            </li>
        {% empty %}
            <p>没有找到您要查询的商品。</p>
        {% endfor %}
        </ul>

        {% if page.has_previous or page.has_next %}
        <div class="pagenation">
            {% if page.has_previous %}<a href="/search/?q={{ query }}&amp;page={{ page.previous_page_number }}">{% endif %}<上一页{% if page.has_previous %}</a>{% endif %}
            |
            {% if page.has_next %}<a href="/search/?q={{ query }}&amp;page={{ page.next_page_number }}">{% endif %}下一页>{% if page.has_next %}</a>{% endif %}
        </div>
        {% endif %}
    </div>
{% endblock %}