如何从URL提取城市，地区，国家？ Django的

问题描述

我的Django应用程序目前服务于7个硬编码城市，并希望为所有世界城市提供服务，而不是像布达佩斯这样一个词，而是像纽约，纽约，美国三个层次。

我的Google功能的搜索字段返回如下结果：

  http：// localhost：8000 / search /？city = New + York％2C + NY％2C + United + States 
  

如何提取值并将其保存在我的模型中。

这是我目前的城市模式：

<$城市名（$ model $ M $）

name = models.CharField（max_length = 128，default =，unique = False）＃city name
country = models.CharField（max_length = 128，default =Scotland）＃country name
information = models.CharField（max_length = 3000，default =）＃关于city的信息
image = models.ImageField（upload_to ='city_images'，default = 0）#city image
slug = models.SlugField（unique = False）＃city slug

＃save fun
def save（self，* args，** kwargs）：
self.slug = slugify（self.name）
super（City，self）.save（* args，** kwargs）

def __unicode __（self）：
return self.name

从我的观点来看，这条线只能在数据库中不存在的地方添加一个新城市：

  city_name = City.objects.get_or_create（slug = city_name_slug，name = city_name_slug）
  

提取城市，地区，国家，并将其保存在模型中，并且s to是独一无二的：

最后，这是我的全景：

  def city（request，city_name_slug）：
＃创建一个上下文字典，我们可以传递给
＃模板呈现引擎。 
 context_dict = {} 
 
＃如果用户使用配置文件登录，则status = 2. 
＃如果用户没有配置文件登录，则status = 1 
＃否如果用户没有登录（status = 0）
 status = navbatlogic（request = request）
 
＃在导航栏中获取配置文件链接
＃（仅在登录时才可查看+有个人资料）
 slug_of_logged_user = get_profile_slug（request = request）
 
＃我们可以找到具有给定名称的城市名称？ 
＃如果我们不能，.get（）方法会引发一个DoesNotExist异常。 
＃所以.get（）方法返回一个模型实例或引发一个异常。 
 city_name = City.objects.get_or_create（
 slug = city_name_slug，name = city_name_slug）
 
＃获取注册到这个城市的用户
 user_list = User.objects。过滤器（
 profile__city = city_name [0]）。order_by（' -  profile__average_rating'）[：20] 
 
＃添加登录用户的用户列表，城市名称，和
＃状态变量到上下文字典
 context_dict ['users'] = user_list 
 context_dict ['city'] = city_name [0] 
 context_dict ['slug_of_logged_user'] = slug_of_logged_user 
 context_dict ['status'] = status 
 
＃如果在请求中找到p，我们正在搜索这个城市的人
如果请求中有p。 GET：
q = request.GET.get（'p'）
 try：
＃在
＃username，page slug或first中查找具有搜索字词的任何用户，姓氏
 user_list = User.objects.filter （
 Q（username__contains = q）| Q（profile__slug__contains = q）| 
 Q（first_name__contains = q）| Q（last_name__contains = q）
）
 
＃确保列表只包含在此城市注册的用户
 user_list = user_list.filter（profile__city = city_name）
 
＃重新添加列表到上下文字典
 context_dict ['users'] = user_list 
除了：
 pass 
 
＃如果在请求中找到h，我们正在寻找在这个城市有一些兴趣的人
＃
如果请求中有'h'.GET：
q = request.GET.get（'h'）
 try ：
＃寻找任何类似于搜索查询的兴趣的用户
 user_list = User.objects.filter（
 profile__hobbies__hobby__contains = q）
 
＃确保列表包含只有在这个城市注册的用户
 user_list = user_list.filter（profile__city = city_name）
 
＃重新添加列表到上下文字典
 context_di ct ['users'] = user_list 
除了：
 pass 
 
＃如果在请求中找到l，我们正在搜索具有
＃某些语言的人在这个城市
如果'l'在request.GET：
q = request.GET.get（'l'）
 try：
＃寻找任何用户的语言类似于搜索查询
 user_list = User.objects.filter（
 profile__languages__language__contains = q）
 
＃确保列表只包含在此城市注册的用户
 user_list = user_list。过滤器（profile__city = city_name）
 
＃将列表重新添加到上下文字典
 context_dict ['users'] = user_list 
除了：
 pass 
 
 return render（request，'cityProfile.html'，context_dict）
  

解决方案

您可以使用这样的东西：

  from urllib.parse import urlparse，parse_qs 
 
u = urlparse（'http：// localhost：8000 / search /？city = New + York％2C + 2C + United + States'）
q = parse_qs（u.query）
 city = q ['city'] 
  

然后您可以 split 城市结果获取城市，州和国家/地区。

My Django app currently serves 7 hard-coded cities and would like to make serve all world cities saved not as one word like "Budapest" but as three levels like "New York, New York, USA".

My Google-powered search field returns results like this:

http://localhost:8000/search/?city=New+York%2C+NY%2C+United+States

How can I extract the values and save them in my model.

This is my current City model:

class City(models.Model):

    name = models.CharField(max_length=128, default="", unique=False)  # city name
    country = models.CharField(max_length=128, default="Scotland")  # country name
    information = models.CharField(max_length=3000, default="")  # information about city
    image = models.ImageField(upload_to='city_images', default=0)#city image
    slug = models.SlugField(unique=False)  # city slug

    # save function
    def save(self, *args, **kwargs):
        self.slug = slugify(self.name)
        super(City, self).save(*args, **kwargs)

    def __unicode__(self):
        return self.name

This line from my view only adds a new city if it doesn't exist in the database already:

city_name = City.objects.get_or_create(slug=city_name_slug, name=city_name_slug)

I'd like the view to extract City, Region, Country and save them in the model and for the slug to be unique like this:

Finally, this is my View in full:

def city(request, city_name_slug):
    # Create a context dictionary which we can pass to the
    # template rendering engine.
    context_dict = {}

    # if the user is logged in with a profile then status = 2.
    # else if the user is logged in without a profile then status = 1
    # else if the user is not logged in (status = 0)
    status = navbatlogic(request=request)

    # to get the profile link in the nav bar
    # (only viewable when logged + has a profile)
    slug_of_logged_user = get_profile_slug(request=request)

    # Can we find a city name slug with the given name?
    # If we can't, the .get() method raises a DoesNotExist exception.
    # So the .get() method returns one model instance or raises an exception.
    city_name = City.objects.get_or_create(
        slug=city_name_slug, name=city_name_slug)

    # Get the users registered to this city
    user_list = User.objects.filter(
        profile__city=city_name[0]).order_by('-profile__average_rating')[:20]

    # Add the user list, city name, slug of the logged-in user, and a
    # status variable to the context dictionary
    context_dict['users'] = user_list
    context_dict['city'] = city_name[0]
    context_dict['slug_of_logged_user'] = slug_of_logged_user
    context_dict['status'] = status

    # If p is found in the request, we are searching for people in this city
    if 'p' in request.GET:
        q = request.GET.get('p')
        try:
            # Look for any user with the search term in their
            # username, page slug or first and last names
            user_list = User.objects.filter(
                Q(username__contains=q) | Q(profile__slug__contains=q) |
                Q(first_name__contains=q) | Q(last_name__contains=q)
            )

            # Make sure list contains only users registered in this city
            user_list = user_list.filter(profile__city=city_name)

            # Re-add list to context dictionary
            context_dict['users'] = user_list
        except:
            pass

    # If h is found in the request, we are searching for people
    # with a certain hobby in this city
    if 'h' in request.GET:
        q = request.GET.get('h')
        try:
            # Look for any user with hobbies similar to the search query
            user_list = User.objects.filter(
                profile__hobbies__hobby__contains=q)

            # Make sure list contains only users registered in this city
            user_list = user_list.filter(profile__city=city_name)

            # Re-add list to context dictionary
            context_dict['users'] = user_list
        except:
            pass

    # If l is found in the request, we are searching for people with
    # a certain language in this city
    if 'l' in request.GET:
        q = request.GET.get('l')
        try:
            # Look for any user with languages similar to the search query
            user_list = User.objects.filter(
                profile__languages__language__contains=q)

            # Make sure list contains only users registered in this city
            user_list = user_list.filter(profile__city=city_name)

            # Re-add list to context dictionary
            context_dict['users'] = user_list
        except:
            pass

    return render(request, 'cityProfile.html', context_dict)

解决方案

You can use urlparse for something like this:

from urllib.parse import urlparse, parse_qs

u = urlparse('http://localhost:8000/search/?city=New+York%2C+NY%2C+United+States')
q = parse_qs(u.query)
city = q['city']

You could then split the city result to get the city, state, and country parts.

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