【Django】网上蛋糕项目商城-首页

概念

本文在上一文章搭建完数据库，以及创建好项目之后，以及前端静态文件后，对项目的首页功能开发。

后端代码编写

在views.py文件中创建方法，连接数据库，并获取首页需要的数据

def getGoodsList(type):
    # 获取所有横幅滚动商品id
    res = Recommend.objects.filter(type=type)
    goodsIds = []
    for r in res:
        goodsIds.append(r.goods_id)
    # 根据推荐栏的商品信息
    goods = Goods.objects.filter(id__in=tuple(goodsIds))
    if type !=1:
        # 将实体类对象转换成字典进行遍历
        for g in goods.values():
            t = Type.objects.get(id=g["type_id"]).name
            g["typename"] = t
    return goods

# 处理首页的请求
def index(request):
    # 获取所有商品分类信息
    global types
    types=Type.objects.all()
    # 根据推荐栏的商品
    scrolls=getGoodsList(1)
    # 获取新品
    newList=getGoodsList(3)
    # 获取热品
    hotList=getGoodsList(2)
    return render(request,"index.html",{"typeList":types,"scroll":scrolls,"newList":newList,"hotList":hotList})

前端页面搭建

在子项目中创建templates文件夹，在该文件夹下创建header.html,foot.html以及index.html作为首页的前端内容

header.html

<div class="header">
    <div class="container">
        <nav class="navbar navbar-default" role="navigation">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <h1 class="navbar-brand"><a href="/"></a></h1>
            </div>
            <!--navbar-header-->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav">
                    <li><a href="/"
                           {% if flag == 1 %}
                           class="active"
                           {% endif %}
                        >首页</a></li>
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle
                        {% if flag == 2 %}
                            active
                        {% endif %}
                        " data-toggle="dropdown">商品分类<b class="caret"></b></a>
                        <ul class="dropdown-menu multi-column columns-2">
                            <li>
                                <div class="row">
                                    <div class="col-sm-12">
                                        <h4>商品分类</h4>
                                        <ul class="multi-column-dropdown">

                                            <li><a class="list" href="/goods_list">全部系列</a></li>
                                            {% for t in  typeList%}
                                            <li><a class="list" href="/goods_list?typeid={{ t.id }}">{{t.name}}</a></li>
                                            {% endfor %}
                                        </ul>
                                    </div>
                                </div>
                            </li>
                        </ul>
                    </li>
                    <li><a href="/goodsrecommend_list?type=2" {% if  flag == 3 and t == 2 %} class="active" {% endif %}>热销</a></li>
                    <li><a href="/goodsrecommend_list?type=3" {% if  flag == 3 and t == 3 %} class="active" {% endif %}>新品</a></li>

                    {% if user %}
                        <li><a href="/order_list" {% if  flag == 5 %} class="active" {% endif %}>我的订单</a></li>
                        <li><a href="/user_center.jsp" {% if  flag == 4 %} class="active" {% endif %}>个人中心</a></li>
                        <li><a href="/user_logout" >退出</a></li>
                    {% else %}
                        <li><a href="/user_register.jsp" {% if  flag == 10 %} class="active" {% endif %}>注册</a></li>
                        <li><a href="/user_login.jsp" {% if  flag == 9 %} class="active" {% endif %}>登录</a></li>
                    {% endif %}

                    {% if user and user.isadmin %}
                        <li><a href="/admin/index.jsp" target="_blank">后台管理</a></li>
                    {% endif %}
                </ul>
                <!--/.navbar-collapse-->
            </div>
            <!--//navbar-header-->
        </nav>
        <div class="header-info">
            <div class="header-right search-box">
                <a href="javascript:;"><span class="glyphicon glyphicon-search" aria-hidden="true"></span></a>
                <div class="search">
                    <form class="navbar-form" action="/goods_search">
                        <input type="text" class="form-control" name="keyword">
                        <button type="submit" class="btn btn-default
                        {% if flag == 7 %}
                        active
                        {% endif %}
                        " aria-label="Left Align">搜索</button>
                    </form>
                </div>
            </div>

            <div class="header-right cart">
                <a href="goods_cart.jsp">
                    <span class="glyphicon glyphicon-shopping-cart
                    {% if flag == 8 %}
                    active
                    {% endif %}
                    " aria-hidden="true"><span class="card_num">
                        {% if order %}
                            {{ order.amount }}
                        {% else %}
                            0
                        {% endif %}
                        </span></span>
                </a>
            </div>
            <div class="clearfix"> </div>
        </div>
        <div class="clearfix"> </div>
    </div>
</div>

foot.html

<div class="footer">
    <div class="container">
        <div class="text-center">
           
        </div>
    </div>
</div>

index.html

<!DOCTYPE html>
<html>
<head>
    {% load static %}
    <title>首页</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <link type="text/css" rel="stylesheet" href="{% static 'css/bootstrap.css' %}">
    <link type="text/css" rel="stylesheet" href="{% static 'css/style.css' %}">
    <script type="text/javascript" src="{% static 'js/jquery.min.js' %}"></script>
    <script type="text/javascript" src="{% static 'js/bootstrap.min.js' %}"></script>
    <script type="text/javascript" src="{% static 'layer/layer.js' %}"></script>
    <script type="text/javascript" src="{% static 'js/cart.js' %}"></script>
</head>
<body>
<!--header-->
{% include "header.html" with flag=1 typeList=typeList %}
<!--banner-->

<div class="banner">
    <div class="container">
        <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
            <!-- Indicators -->
            <ol class="carousel-indicators" id="olnum">
                {% for g in scroll %}
                    {% if forloop.first %}
                        <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
                        {% else %}
                        <li data-target="#carousel-example-generic" data-slide-to="{{ forloop.counter0 }}"></li>
                    {% endif %}
                {% endfor %}
            </ol>

            <!-- Wrapper for slides -->
            <div class="carousel-inner" role="listbox" id="lunbotu" style="width: 1242px; height: 432px;">
                {% for g in scroll %}
                    {% if forloop.first %}
                        <div class="item active">
                                <h2 class="hdng"><a href="/goods_detail?id={{ g.id }}">{{ g.name }}</a><span></span></h2>
                                <p>今日精选推荐</p>
                                <a class="banner_a" href="javascript:;" onclick="buy({{ g.id }})">立刻购买</a>
                                <div class="banner-text">
                                    <a href="/goods_detail?id={{ g.id }}">
                                        <img src="{% static  g.cover %}" alt="{{ g.name }}" width="350" height="350">
                                    </a>
                                </div>
                            </div>
                        {% else %}
                        <div class="item">
                                <h2 class="hdng"><a href="/goods_detail?id={{ g.id }}">{{ g.name }}</a><span></span></h2>
                                <p>今日精选推荐</p>
                                <a class="banner_a" href="javascript:;" onclick="buy({{ g.id }})">立刻购买</a>
                                <div class="banner-text">
                                    <a href="/goods_detail?id={{ g.id }}">
                                        <img src="{% static  g.cover %}" alt="{{ g.name }}" width="350" height="350">
                                    </a>
                                </div>
                            </div>
                    {% endif %}
                {% endfor %}

            </div>

        </div>
    </div>
</div>

<!--//banner-->

<div class="subscribe2"></div>

<!--gallery-->
<div class="gallery">
    <div class="container">
        <div class="alert alert-danger">热销推荐</div>
        <div class="gallery-grids">
            {% for g in hotList %}
            <div class="col-md-4 gallery-grid glry-two">
                    <a href="/goods_detail?id={{ g.id }}">
                        <img src="{% static  g.cover %}" class="img-responsive" alt="{{ g.name }}" width="350" height="350"/>
                    </a>
                    <div class="gallery-info galrr-info-two">
                        <p>
                            <span class="glyphicon glyphicon-eye-open" aria-hidden="true"></span>
                            <a href="/goods_detail?id={{ g.id }}">查看详情</a>
                        </p>
                        <a class="shop" href="javascript:;" onclick="buy({{ g.id }})">立刻购买</a>
                        <div class="clearfix"></div>
                    </div>
                    <div class="galy-info">
                        <p>{{ g.typeName }} > {{ g.name }}</p>
                        <div class="galry">
                            <div class="prices">
                                <h5 class="item_price">¥ {{ g.price }}</h5>
                            </div>
                            <div class="clearfix"></div>
                        </div>
                    </div>
                </div>
            {% endfor %}

        </div>

        <div class="clearfix"></div>
        <div class="alert alert-info">新品推荐</div>
        <div class="gallery-grids">
            {% for g in newList %}
            <div class="col-md-3 gallery-grid ">
                    <a href="/goods_detail?id={{ g.id }}">
                        <img src="{% static  g.cover %}" class="img-responsive" alt="{{ g.name }}"/>
                    </a>
                    <div class="gallery-info">
                        <p>
                            <span class="glyphicon glyphicon-eye-open" aria-hidden="true"></span>
                            <a href="/goods_detail?id={{ g.id }}">查看详情</a>
                        </p>
                        <a class="shop" href="javascript:;" onclick="buy({{ g.id }})">立刻购买</a>
                        <div class="clearfix"></div>
                    </div>
                    <div class="galy-info">
                        <p>{{ g.typeName }} > {{ g.name }}</p>
                        <div class="galry">
                            <div class="prices">
                                <h5 class="item_price">¥ {{ g.price }}</h5>
                            </div>
                            <div class="clearfix"></div>
                        </div>
                    </div>
                </div>
            {% endfor %}
        </div>
    </div>
</div>
<!--//gallery-->

<!--subscribe-->
<div class="subscribe"></div>
<!--//subscribe-->
<!--footer-->
{% include "footer.html" %}
</body>
</html>

在主项目的urls.py文件中定义请求地址，用于浏览器访问views.py文件

 path('',views.index),

在PyCharm的内置dos窗口中输入以下指令启动服务器

python manage.py runserver

浏览器中访问该地址