Question

我想创建一个系统。对于这个系统，我需要耐心地创建表格。当我单击按钮时，可以保存患者，但是按下按钮后会出现错误页面。

找不到带有关键字参数'{'slug'：'James'}'的'create'。尝试了1个模式：['create / $']

（填写表单时，我将James写入 title 字段），甚至我在mySql数据库中也写James，title列就像id。 1,2,3，...等等不是詹姆斯...

我的错误在哪里？非常感谢。

urls.py

app_name = "patients"

urlpatterns = [

re_path('patients/', views.PatientList.as_view(), name='patients_list'),

url(r'^create/$', patient_create, name='patient_create'),

path('create/<slug:slug>/', views.PatientsDetail.as_view(), name='patients_detail'),
]

models.py

class newPatients(models.Model):

title = models.CharField(max_length=100)
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
created_date = models.DateTimeField(default=timezone.now)
dept = models.TextField()
address = models.TextField()
phone = models.CharField(max_length=15)
notes = RichTextField(verbose_name="notes")
slug = models.SlugField(max_length=100, unique=True, editable=False)

def publish(self):
    self.published_date = timezone.now()
    self.save()

def __str__(self):
    return self.first_name

def get_create_url(self):
    return reverse('patients:patient_create', kwargs={'slug': self.slug})

def get_unique_slug(self):
    slug = slugify(self.title.replace('ı', 'i'))
    unique_slug = slug
    counter = 1
    while newPatients.objects.filter(slug=unique_slug).exists():
        unique_slug = '{}-{}'.format(slug, counter)
        counter += 1
    return unique_slug

def get_absolute_url(self):
    return reverse('patients:patient_create', kwargs={'slug': self.slug})

def save(self, *args, **kwargs):
    self.slug = self.get_unique_slug()
    return super(newPatients, self).save(*args, **kwargs)

class Meta:
    ordering = ['-created_date']

回溯

Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/create/

Django Version: 2.2.9
Python Version: 3.7.0
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'users',
 'patients',
 'widget_tweaks',
 'crispy_forms',
 'ckeditor']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback:

File "C:\Users\edeni\senior\myenv\lib\site-packages\django\core\handlers\exception.py" in inner
  34.             response = get_response(request)

File "C:\Users\edeni\senior\myenv\lib\site-packages\django\core\handlers\base.py" in _get_response
  115.                 response = self.process_exception_by_middleware(e, request)

File "C:\Users\edeni\senior\myenv\lib\site-packages\django\core\handlers\base.py" in _get_response
  113.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "C:\Users\edeni\senior\myenv\lib\site-packages\django\contrib\auth\decorators.py" in _wrapped_view
  21.                 return view_func(request, *args, **kwargs)

File "C:\Users\edeni\senior\pharsys\patients\views.py" in patient_create
  31.             return redirect(newPatients)

File "C:\Users\edeni\senior\myenv\lib\site-packages\django\shortcuts.py" in redirect
  58.     return redirect_class(resolve_url(to, *args, **kwargs))

File "C:\Users\edeni\senior\myenv\lib\site-packages\django\shortcuts.py" in resolve_url
  134.         return to.get_absolute_url()

File "C:\Users\edeni\senior\pharsys\patients\models.py" in get_absolute_url
  40.         return reverse('patients:create', kwargs={'slug': self.slug})

File "C:\Users\edeni\senior\myenv\lib\site-packages\django\urls\base.py" in reverse
  90.     return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))

File "C:\Users\edeni\senior\myenv\lib\site-packages\django\urls\resolvers.py" in _reverse_with_prefix
  673.         raise NoReverseMatch(msg)

Exception Type: NoReverseMatch at /create/
Exception Value: Reverse for 'create' with keyword arguments '{'slug': 'james'}' not found. 1 pattern(s) tried: ['create/$']

Answer 1

读取错误（检查您的自己的代码中的行）：

File "C:\Users\edeni\senior\pharsys\patients\views.py" in patient_create
  31.             return redirect(newPatients)

...

File "C:\Users\edeni\senior\pharsys\patients\models.py" in get_absolute_url
  40.         return reverse('patients:create', kwargs={'slug': self.slug})

它告诉您错误在您的get_absolute_url方法中（从重定向中调用）。并且它告诉您不能使用关键字参数'{'slug'：'james'}'反转'create'。好吧，现在很清楚，您的网址格式create没有参数'slug'。可能您不是要“创建”（对于详细视图会很奇怪），而是“ Patients_detail”？

Django NoReverseMatch位于/ create /

1 个答案: