Django——Geopy
我正在寻找如何定义两点之间的距离。第一个与帖子本身有关,不会因每个帖子而改变。它指示了岗位的位置。第二个将链接到用户的位置。
我想计算帖子和用户之间的距离。
问题:假设我连接了:每个帖子都列出了所有距离
我得到了一个职位:[459.414、459.414、459.4140.605、0.605、.605、0.605459.414和0.605]km
user/models.py
class UserProfile(models.Model):
...
latitude = models.DecimalField(max_digits=9, decimal_places=6, blank=True, default='0')
longitude = models.DecimalField(max_digits=9, decimal_places=6, blank=True, default='0')
post/models.py
class Cuisine(models.Model):
...
latitude_user = models.DecimalField(max_digits=9, decimal_places=6, blank=True, default='0')
longitude_user = models.DecimalField(max_digits=9, decimal_places=6, blank=True, default='0')
感谢@tgrandje,我解决了一些问题,从UserProfile
中找到了价值:问题是我每次发帖的距离总是一样的。有什么建议吗?
def Homemainpage(request):
post = Cuisine.objects.filter(status=0).order_by('-publishing_date').all() #All cuisine
if request.user.is_authenticated:
if request.user.userprofile.full_address:
distance = []
for p in post:
post_lon = p.longitude_user
post_lat = p.latitude_user
post_situation = (post_lon, post_lat)
user_lon = UserProfile.objects.filter(user=request.user)[0].longitude
user_lat = UserProfile.objects.filter(user=request.user)[0].latitude
user_situation = (user_lon, user_lat)
distance.append(round(geodesic(post_situation, user_situation).km, 3))
# Pre commande pour demain
#post = Cuisine.objects.filter(status=0).filter(start_date=now().date() + timedelta(days=1)).order_by('-publishing_date').all()
# En commande pour aujourd'hui
#post = Cuisine.objects.filter(status=0).filter(start_date=now().date()).order_by('-publishing_date').all()
paginator = Paginator(post, 3)
page_number = request.GET.get('page')
page_obj = paginator.get_page(page_number)
listaliments = ListAliments.objects.filter(status=1).all()
typerepas = Typerepas.objects.filter(status=1).all()
sperepas = Sperepas.objects.filter(status=1).all()
return render(request, 'index.html', {
'post': post,
'listaliments': listaliments,
'typerepas': typerepas,
'sperepas': sperepas,
'page_obj': page_obj,
'today' : now().date(),
'tomorrow': now().date() + timedelta(days=1),
'distance': distance,
})
如果你已经准备好了所有的纬度/经度,你可以使用pyproj,这真的很有效:
from pyproj import Geod
...
user_lon = UserProfile.objects.filter(user=self.request.user).get(self.longitude)
user_lat = UserProfile.objects.filter(user=self.request.user).get(self.latitude)
post_lon = Cuisine.objects.filter(slug=slug).get(self.longitude_user)
post_lat = Cuisine.objects.filter(slug=slug).get(self.latitude_user)
wgs84_geod = Geod(ellps='WGS84')
*_args, dist_meters = wgs84_geod.inv(user_lon,user_lat,post_lon,post_lat)
print(dist_meters)
编辑
def Homemainpage(request):
post = Cuisine.objects.filter(status=0).order_by('-publishing_date').all() #All cuisine
...
user_lon = UserProfile.objects.filter(user=request.user)[0].longitude
user_lat = UserProfile.objects.filter(user=request.user)[0].latitude
wgs84_geod = Geod(ellps='WGS84')
kitchen_distance_dict = dict()
for kitchen in Cuisine.objects.all():
post_lon = kitchen.longitude
post_lat = kitchen.latitude
*_args, dist_meters = wgs84_geod.inv(user_lon,user_lat,post_lon,post_lat)
kitchen_distance_dict[kitchen.pk] = dist_meters / 1000
return render(request, 'index.html', {
'post': post,
'listaliments': listaliments,
'typerepas': typerepas,
'sperepas': sperepas,
'page_obj': page_obj,
'distance': kitchen_distance_dict,
})