我在尝试渲染模板时遇到无反向匹配错误。您能解释一下“无反向匹配错误”是什么意思，以便于理解和解决错误吗？
models.py
from django.contrib.sites.models import Site
from django.contrib.gis.db import models
from django.utils.crypto import get_random_string
from django.contrib.gis.geos import GEOSGeometry,Point
from django.contrib.auth.models import AbstractUser
from django.shortcuts import render
# Create your models here.
class User(AbstractUser):
pass
geos_pnt=Point(4314498.56, 1003834.600,srid=3857)
#pnt=GEOSGeometry('POINT(4314498.56, 1003834.600)').wkt
class Apartment(models.Model):
SUBCITY_CHOICES = (
('ADK', 'Addis Ketema'), ('AKLTY', 'Akaki-Kality'), ('ARD', 'Arada'), ('BL', 'Bole'), ('GL', 'Gulele'),
('KLF', 'Kolfe-Keranio'), ('LDTA', 'Ledeta'), ('NFS', 'Nefas Silk'), ('YK', 'Yeka'))
apt_id = models.CharField(str(SUBCITY_CHOICES)+"-"+get_random_string(length=4), max_length=8,primary_key=True)
location = models.PointField(default=geos_pnt,extent=(4282586.10,996190.90,4346411.02,1011478.31),
blank=True, null=True, srid=3857, help_text="Point(longitude latitude)")
no_bedrooms= models.IntegerField(null=True)
apt_area = models.IntegerField(default=0, null=True)
apt_cost = models.IntegerField(default=0, null=True)
apt_subcity = models.CharField(default='Nefas Silk',max_length=100, choices=SUBCITY_CHOICES,null=True)
register_date = models.DateTimeField('Register Date',auto_now_add=True,null=True)
slug = models.SlugField(unique=True)
objects = models.Manager()
sites =models.ManyToManyField(Site)
#change points from apt_rent_db to kml
def pointkml(self):
points = Apartment.objects.kml()
return render("placemarks.kml", {'places': points})
def get_absolute_url(self):
return reverse('apartment_create', kwargs={'pk': self.pk, 'apt_id': self.apt_id.pk})
def save(self, *args, **kwargs):
#self.Latitude = self..y
#self.Longitude = self.location.x
self.slug = slugify(self.apt_id)
super(Apartment, self).save(*args, **kwargs)
class Meta:
# order of drop-down list items
verbose_name = ("Apartment")
verbose_name_plural = ("Apartments")
ordering = ('apt_cost',)
app_label = 'rent_app'
def __unicode__(self):
return self.apt_id
urls.py：
from django.urls import path
from . import views
app_name = 'rent_app'
urlpatterns = [
path('', views.IndexView.as_view(), name='index'),
path('apartment_create/<slug:apt_id>)', views.ApartmentCreate.as_view(), name='apartment_create'),
path('apartments/<int:pk>/', views.ApartmentUpdate.as_view(), name='apartment_update'),
path('apartments/<int:pk>/delete/', views.ApartmentDelete.as_view(), name='apartment_delete'),
]
views.py：
from django.urls import reverse_lazy
from django.views import generic
from django.views.generic.edit import CreateView, DeleteView, UpdateView
from .models import Apartment
from .forms import ApartmentCreateForm
class IndexView(generic.ListView):
template_name = 'djnago_leaflet.html'
context_object_name = 'latest_apartments_list'
def get_queryset(self):
"""Return the last five published apartments."""
return Apartment.objects.order_by('-register_date')[:5]
class ApartmentCreate(CreateView):
template_name = 'rent_app/apartment-create-success.html'
form_class = ApartmentCreateForm
fields = ['apt_id','location','apt_area','apt_cost']
success_url= reverse_lazy('apartment-create')
class ApartmentUpdate(UpdateView):
model = Apartment
fields = ['apt_id','location','apt_area', 'apt_cost']
template_name='index_leaflet.html'
template_name_suffix='apartments'
class ApartmentDelete(DeleteView):
model = Apartment
template_name = 'index_leaflet.html'
template_name_suffix='apartments'
success_url = reverse_lazy('apartment-list')
html：
<html>
<head>
{% leaflet_js plugins="forms" %}
{% leaflet_css plugins="forms" %}
</head>
<body>
{% leaflet_map "map" callback="window.map_init_basic" %}
<h2>Edit Apartment ID {{ Apartment.apt_id }}</h2>
<h2>Edit Apartment Location {{ Apartment.location }}</h2>
<form action="{% url 'rent_app:apartment_create' apt_id %}" method="post">
{% csrf_token %}
{{ form }}
<input type="submit"/>
</form>
</body>
</html>
我认为您的代码中存在许多问题。
首先关于您看到的错误。在您的网址中，您定义了一个名称为'apartment_create'的模式，该模式需要一个slug作为参数。但是，模板中的apt_id为空字段。因此，django无法找到名称为“ apartment_create”和有效子弹的模式。要解决此问题，请将网址格式更改为
path('apartment_create/', views.ApartmentCreate.as_view(), name='apartment_create')
并且在您的模板中，从您的操作中以表格的形式取出apt_id（或一起取出action。
但是，在ApartmenCreate视图中，缺少model参数。另外fields和form参数是多余的。并且您确定该视图中的template_name参数正确吗？
在您的模型中，字段apt_id看起来很奇怪。您正在创建一个非常模糊的verbose_name字段。如果要有一个选择字段，则必须设置该字段的choices参数，例如：]
apt_id = models.CharField(choices=SUBCITY_CHOICES, max_length=8, primary_key=True)
您的get_absolute_url也不正确：首先，没有与该模式匹配的有效url，其次，字段（apt_id）没有pk。
在模板中，您有类似{{ Apartment.apt_id }}的语句。但是，Apartment是一类。因此，在您的视图add context_object_name='apartment'中，您可以像{{ apartment.apt_id }}一样访问模板中的值。
可能还有其他一些我忽略的问题。