二手车项目（二）

1.我要买车模块

sale应用中

urls.py

 1 # encoding: utf-8
 2 __author__ = 'Freshman'
 3 
 4 from django.conf.urls import url, include
 5 
 6 from sale import views
 7 
 8 
 9 urlpatterns = [
10     # 汽车品牌列表
11     url(r'^brandlist/$',views.brandlist,name='brandlist'),
12     # 汽车价格列表
13     url(r'^price0_10/$', views.price0_10, name='price0_10'),
14     url(r'^price10_30/$', views.price10_30, name='price10_30'),
15     url(r'^price30_80/$', views.price30_80, name='price30_80'),
16     url(r'^price80_/$', views.price80_, name='price80_'),
17     # 汽车详情
18     url(r'^detail/$', views.detail, name='detail'),
19 
20 ]

sale-views.py

1.1汽车品牌分类

def brandlist(request):
    '''汽车品牌分类视图'''

    # try 捕获对象不存在异常
    try:
        # 接受主页传递的brand
        brand = request.GET['brand']

        # 查询所有品牌信息列表
        brand_list = Brand.objects.all()
        # 通过品牌名称获取对应的品牌对象
        brand = Brand.objects.get(btitle=brand)
        # 查询brand下的所有未删除和销售的车辆信息列表
        car_list = brand.carinfo_set.filter(ispurchase=0, isdelete=0)
        # 将传递给模板的变量封装到字典中
        params = {
            'brand':brand,
            'brand_list':brand_list,
            'car_list':car_list,
        }
    except ObjectDoesNotExist as e:
        return HttpResponse(e)

    return render(request, 'list.html', params)

1.2汽车价格分类

def price_car(request, priceLow, priceHigh):
    '''汽车价格分类'''
    # 取得页面get请求值
    brand = request.GET['brand']
    brand_list = Brand.objects.all()
    # 如果brand为None
    if brand == 'None':
        if priceHigh:
            car_list = Carinfo.objects.filter(isdelete=0, ispurchase=0, price__gt=priceLow, price__lte=priceHigh)
        else:
            car_list = Carinfo.objects.filter(isdelete=0, ispurchase=0, price__gt=priceLow)
    else:
        brand = Brand.objects.get(btitle=brand)
        if priceHigh:
            car_list = brand.carinfo_set.filter(isdelete=0, ispurchase=0, price__gt=priceLow, price__lte=priceHigh)
        else:
            car_list = brand.carinfo_set.filter(isdelete=0, ispurchase=0, price__gt=priceLow)

    params = {
        'car_list':car_list,
        'brand_list':brand_list,
        'brand':brand
    }

    resp = render(request, 'list.html', params)
    return resp

def price0_10(request):
    '''
    price0_10
    :param request:
    :return:
    '''
    return price_car(request, 0, 10)

def price10_30(request):
    '''
    price10_30
    :param request:
    :return:
    '''
    return price_car(request, 10, 30)

def price30_80(request):
    '''
    price30_80
    :param request:
    :return:
    '''
    return price_car(request, 30, 80)

def price80_(request):
    '''
    price80_
    :param request:
    :return:
    '''
    return price_car(request, 80, 9999999999)  # >>>>>>>>>//有问题

def detail(request):
    '''汽车详情'''
    carid = request.GET['carid']
    try:
        car = Carinfo.objects.get(id=carid)
    except ObjectDoesNotExist as e:
        return HttpResponse(e)
    resp = render(request, 'detail.html', {'car':car})
    return resp

2.主页热门车型展示

sale-view.py

def index(request):
    '''
    首页
    :param request:
    :return:
    '''
    # 查询所以品牌信息
    brand_list = Brand.objects.all()
    # 查询所有热卖车型：取出5条待卖车辆记录
    car_list = Carinfo.objects.filter(ispurchase=0,isdelete=0)
    car_five = random.sample(list(car_list), 5)
    return render(request, 'index.html', locals())

3.汽车详情

sale-view.py

def detail(request):
    '''汽车详情'''
    carid = request.GET['carid']
    try:
        car = Carinfo.objects.get(id=carid)
    except ObjectDoesNotExist as e:
        return HttpResponse(e)
    resp = render(request, 'detail.html', {'car':car})
    return resp