Django - 最近的商店

Question

我很麻烦，有人可以帮我吗？我一直在使用这个例子http://www.rkblog.rk.edu.pl/w/p/shops-near-you-geographic-features-geodjango/，但是在Django 2.0中我并没有获得成功，不会显示任何错误但不起作用，我的代码是：< / p>

PS：我的github是https://github.com/rafaelribeiroo/magalu-finder

Models.py

from django.db import models

from django.contrib.gis.db import models as gis_models
from django.contrib.gis import geos

from urllib.error import URLError
from geopy.geocoders import GoogleV3


class Produto(models.Model):
    # codigo = models.IntegerField()
    # Não tem sentido o atributo acima, uma vez que o
    # Django gera um ID automático
    name = models.CharField('Nome', max_length=50, blank=False)
    value = models.DecimalField(
        'Valor',
        max_digits=7,
        decimal_places=2,
        blank=False)
    description = models.TextField(
        'Descrição',
        max_length=999,
        blank=False)

    class Meta:
        ordering = ['id']
        verbose_name = 'Produto'
        verbose_name_plural = 'Produtos'

    def __str__(self):
        return self.name


class Loja(models.Model):
    product = models.ManyToManyField(Produto, verbose_name='produtos')
    filial = models.IntegerField('Código Filial', blank=False)
    cep = models.IntegerField('CEP', blank=False)
    address = models.CharField(max_length=100)
    city = models.CharField(max_length=50)
    # Qual a diferença entre Blank e Null?
    # O argumento BLANK servirá apenas para validar os inputs
    # Já o NULL, para o banco de dados
    location = gis_models.PointField(
        'Longitude/Latitude',
        geography=True,
        blank=True,
        null=True
    )
    description = models.TextField(
        'Descrição simples',
        max_length=500,
        blank=False)

    gis = gis_models.Manager()
    objects = models.Manager()

    class Meta:
        ordering = ['filial']
        verbose_name = 'Loja'
        verbose_name_plural = 'Lojas'

    def __str__(self):
        return str(self.filial)


def save(self, *args, **kwargs):
    if not self.localizacao:
        address = ('{0} {1}'.format(self.city, self.address))
        address = address.encode('utf-8')
        geocoder = GoogleV3(
            api_key='AIzaSyAzxFH7ttJU0SAqlW0m7O4EYL9OZNYD85U'
        )
        try:
            _, latlon = geocoder.geocode(address, timeout=10)
        except (URLError, ValueError):
            pass
    else:
        point = ('POINT({} {})'.format(latlon[1], latlon[0]))
        self.location = geos.fromstr(point)
    super(Loja, self).save(*args, **kwargs)

Views.py：

from django.shortcuts import render
from django import forms

from urllib.error import URLError

from django.contrib.gis import geos
from django.contrib.gis.measure import D
from django.template import RequestContext
from geopy.geocoders import GoogleV3
from .models import Loja
from .forms import LojaForm


def geocode_address(address):  # Converter Lat/Lon em Endereço
    address = address.encode('utf-8')
    geocoder = GoogleV3(
        api_key='AIzaSyAzxFH7ttJU0SAqlW0m7O4EYL9OZNYD85U'
    )
    try:
        _, latlon = geocoder.geocode(address)
    except (URLError, ValueError):
        return None
    else:
        return latlon


def get_lojas(longitude, latitude):  # Obter a localização atual do cliente
    current_point = geos.fromstr('POINT {} {}'.format(longitude, latitude))
    distance_from_point = {'km': 10}  # Mostrar as lojas há 10km's
    loja = Loja.objects.filter(
        location__distance_lte=(
            current_point,
            D(**distance_from_point)
        )
    )
    loja = loja.distance(current_point).order_by('distance')
    return loja.distance(current_point)


def geolocation(request):
    if request.method == 'POST':
        form = LojaForm(request.POST)
        form = forms.AddressForm(request.POST)
        if form.is_valid():
            address = form.cleaned_data['address']
            location = geocode_address(address)
            if location:
                latitude, longitude = location
                loja = get_lojas(longitude, latitude)
    else:
        form = LojaForm
    return render(
        'location.html',
        {'form': form, 'loja': loja},
        context_instance=RequestContext(request)
    )

表单：

from django import forms
from .models import Loja


class LojaForm(forms.ModelForm):
    class Meta:
        model = Loja
        fields = [
            'filial',
            'cep',
            'address',
            'city',
            'location',
            'description',
        ]

最后，我的 location.html

<form method="post" action="./">
    {% csrf_token %}
    <table>
        {{ form }}
    </table>
    <input type="submit" value="Search" />
</form>



{% if loja %}
    <h2>Lojas próximas a você</h2>
    <ul>
        {% for cont in loja %}
            <li><b>{{ loja.filial }}</b>: Distância: {{ loja.distance }}</li>
        {% endfor %}
    </ul>
    <div class="map" style="width: 400px; height: 400px;"></div>
{% endif %}