noReverseMatch at /反向错误与urlresolvers，get_absolute_url（） [英] NoReverseMatch at / Reverse error with urlresolvers, get_absolute_url()

问题描述

在函数get_absolute_url（）中的url reverse（）错误

不能反转每个模型（serial_slug）的url，但url自己存在！

这是主要的url.py

  from django.conf.urls import include ，url 
 from django.contrib import admin 
 
 urlpatterns = [
 url（r'^ admin /'，admin.site.urls），
 
 url（r'^ series /'，include（serials.urls，namespace ='series'）），
 url（r'^'，include（serials.urls，namespace ='homeview' ）），
 
] 
  

这是我的应用程序中的urls.py

  from django.conf.urls import include，url 
 from .views import homeview，post_of_serial，post_of_season，post_of_serie 
 
 urlpatterns = [
 url（r'^ $'，homeview，name ='homeview'），＃/ series / 
 url（r'^（？P< serial_slug> [\w  - ] +）/ $'，post_of_serial，name ='post_of_serial'），＃/ series / Prison_Break / 
 url（r'^（？P< serial_slug> [\w  - ] +）/（？P< season_slug> [\w  - ] +）/ $'，post_of_season，name ='post_of_season' / Prison_Break / season_5 / 
 url（r'^（？P< serial_slug> [\w  - ] +）/（？P< season_slug> [\w-] +）/（？P < [\w  - ] +）/ $'，post_of_serie，name ='post_of_serie'），＃/ series / Prison_Break / season_5 / 2 / 
 
] 
  

这是models.py

  class Season （models.Model）：
 id = models.AutoField（primary_key = True）
 name_of_the_season = models.CharField（max_length = 40）
 slug = models.SlugField（unique = False，blank = True）
 name_for_easy_access = models.CharField（max_length = 40）
 preview_of_season = models.ImageField（upload_to =previews / preview_for_season /，default = None，width_field =width_field，height_fi eld =height_field）
 width_field = models.IntegerField（default = 150）
 height_field = models.IntegerField（default = 150）
 number_of_released_series = models.IntegerField（default = 0）
 serial_for_this_season = models.ForeignKey（Serial，on_delete = models.CASCADE，default = True）
 a_lot_of_series = models.ManyToManyField（Series，default = None，blank = True）
 year = models.IntegerField（default = 2017）
 timestamp = models.DateTimeField（auto_now_add = True，auto_now = False）
已更新= models.DateTimeField（auto_now_add = False，auto_now = True）
 is_active = models.BooleanField（default = True）
 
 
 def get_absolute_url（self）：
 return reverse（'series：post_of_season'，kwargs = 
 {'serial_slug'：self.serial_for_this_season.slug，
'season_slug'：self.slug，
}）
 
 def __str __（self）：
 return ％s％self.name_for_easy_access 
 
 class Meta：
 ordering = [-timestamp] 
 verbose_name ='Season'
 verbose_name_plural ='季节'
 
 
 class Serial（models.Model）：
 id = models.AutoField（primary_key = True）
 rus_name_of_seriall = models.CharField（max_length = 40）
 eng_name_of_seriall = models.CharField（max_length = 40）
 slug = models.SlugField（unique = False，blank = True）
 number_of_serial = models.DecimalField（max_digits = 10，decimal_places = 2，default = True） 
预览_of_serial = models.ImageField（upload_to =previews / preview_for_serials /，default = None，width_field =width_field，height_field =height_field）
 width_field = models.IntegerField（default = 0）
 height_field = models.IntegerField（default = 0）
 seasonss = models.ManyToManyField（Season，default = None，blank = True）
 timestamp = models.DateField（auto_now_add = True）
 end_or_in_proccess = .ForeignKey（Status，default = None）
 timestamp = models.DateTimeField（auto_now_add = True，auto_now = False）
已更新= models.DateTimeField（auto_now_add = False，auto_now = True）
 is_active = models.BooleanField（default = True）
 
 def get_absolute_url（self）：
 return reverse（'series：post_ of_serial'，kwargs = {'serial_slug'：self.slug}）
 
 
 def __str __（self）：
返回％s％self.rus_name_of_seriall 
 
 class Meta：
 order = [-timestamp] 
 verbose_name ='Serial'
 verbose_name_plural ='Serials'
 
 
 
 class Series（models.Model）：
 id = models.AutoField（primary_key = True）
 rus_name = models.CharField（max_length = 60）
 eng_name = models.CharField（max_length = 60）
 is_active = models.BooleanField（default = True）
 serial_of_this_series = models.ForeignKey（Serial，on_delete = models.CASCADE，default = True）
 season_of_this_series = models.ForeignKey ，on_delete = models.CASCADE，default = True）
 number_of_series = models.IntegerField（default = 0，blank = True，null = True）
 slug = models.SlugField（unique = False，blank = True）
 description = models.TextField（max_length = blank = True，default = None）
 rating = models.FloatField（default = 0，blank = True）
 timestamp_rus = models.DateTimeField（auto_now_add = True，auto_now = False）
已更新= models.DateTimeField（auto_now_add = False，auto_now = True）
 timestamp_eng = models.CharField（max_length = 60）
 time_of_series = models.DecimalField（max_digits = 10，decimal_places = 2，default = 0）
 
 def get_absolute_url（self）：
 return reverse（'series：post_of_serie'，kwargs = 
 {'serial_slug'：self.serial_of_this_series.slug，
 'season_slug'：self.season_of_this_series.slug，
'series_slug'：self.slug}）
 
 def __str __（self）：
 return％s | ％s％（self.rus_name，self.number_of_series）
 
 class Meta：
 ordering = [-timestamp_rus] 
 verbose_name ='系列'
 verbose_name_plural ='系列'
  

使用参数''替换'post_of_serial' '和关键字参数
'{'serial_slug'：''}'未找到1个模式尝试：
['series /（？P [\w - ] +）/ $' ]

（lookup_view_s，args，kwargs，len（patterns），patterns）
django.urls.exceptions.NoReverseMatch：反向'post_of_serial'
和参数'（）'和关键字参数'{'serial_slug'：''}'不是
found。1模式尝试：['series /（？P [\w - ] +）/ $']

解决方案

从此更改

  slug = models.SlugField（unique = False，blank = 
  

到这个

  slug = models.SlugField（unique = False）
  

从所有slug中删除字段blank = True，它将要工作！

Error with url reverse() in function get_absolute_url()

can't reverse the url in every models (serial_slug) but url himself is exists!

this is main url.py

from django.conf.urls import include, url
from django.contrib import admin

urlpatterns = [
    url(r'^admin/', admin.site.urls),

    url(r'^series/', include("serials.urls", namespace='series')),
    url(r'^', include("serials.urls", namespace='homeview')),

]

this is my urls.py in my app

from django.conf.urls import include, url
from .views import homeview, post_of_serial, post_of_season, post_of_serie

urlpatterns = [
   url(r'^$', homeview, name='homeview'),  # /series/
   url(r'^(?P<serial_slug>[\w-]+)/$', post_of_serial, name='post_of_serial'),  # /series/Prison_Break/
   url(r'^(?P<serial_slug>[\w-]+)/(?P<season_slug>[\w-]+)/$', post_of_season, name='post_of_season'),  # /series/Prison_Break/season_5/
   url(r'^(?P<serial_slug>[\w-]+)/(?P<season_slug>[\w-]+)/(?P<series_slug>[\w-]+)/$', post_of_serie, name='post_of_serie'),  # /series/Prison_Break/season_5/2/  

]

this is models.py

class Season(models.Model):
    id                                      = models.AutoField(primary_key=True)
    name_of_the_season                      = models.CharField(max_length=40)
    slug                                    = models.SlugField(unique=False, blank=True) 
    name_for_easy_access                    = models.CharField(max_length=40)
    preview_of_season                       = models.ImageField(upload_to="previews/preview_for_season/", default=None,width_field="width_field", height_field="height_field")
    width_field                             = models.IntegerField(default=150)
    height_field                            = models.IntegerField(default=150)
    number_of_released_series               = models.IntegerField(default=0)
    serial_for_this_season                  = models.ForeignKey("Serial", on_delete=models.CASCADE, default=True)
    a_lot_of_series                         = models.ManyToManyField("Series", default=None, blank=True)
    year                                    = models.IntegerField(default=2017)
    timestamp                               = models.DateTimeField(auto_now_add=True, auto_now=False)
    updated                                 = models.DateTimeField(auto_now_add=False, auto_now=True)
    is_active                               = models.BooleanField(default=True)


    def get_absolute_url(self):
        return reverse('series:post_of_season', kwargs=
                      {'serial_slug': self.serial_for_this_season.slug,
                      'season_slug': self.slug,
                      })

    def __str__(self):
        return "%s" % self.name_for_easy_access

    class Meta:
        ordering                            = ["-timestamp"]
        verbose_name                        = 'Season'
        verbose_name_plural                 = 'Seasons'


class Serial(models.Model):
    id                                      = models.AutoField(primary_key=True)
    rus_name_of_seriall                     = models.CharField(max_length=40)
    eng_name_of_seriall                     = models.CharField(max_length=40)
    slug                                    = models.SlugField(unique=False, blank=True) 
    number_of_serial                        = models.DecimalField(max_digits=10, decimal_places=2, default=True)
    preview_of_serial                       = models.ImageField(upload_to="previews/preview_for_serials/", default=None,width_field="width_field", height_field="height_field")
    width_field                             = models.IntegerField(default=0)
    height_field                            = models.IntegerField(default=0)
    seasonss                                = models.ManyToManyField(Season, default=None, blank=True)
    timestamp                               = models.DateField(auto_now_add=True)
    end_or_in_proccess                      = models.ForeignKey(Status, default=None)
    timestamp                               = models.DateTimeField(auto_now_add=True, auto_now=False)
    updated                                 = models.DateTimeField(auto_now_add=False, auto_now=True)
    is_active                               = models.BooleanField(default=True)

    def get_absolute_url(self):
        return reverse('series:post_of_serial', kwargs={'serial_slug': self.slug})


    def __str__(self):
        return "%s" % self.rus_name_of_seriall

    class Meta:
        ordering                            = ["-timestamp"]
        verbose_name                        = 'Serial'
        verbose_name_plural                 = 'Serials'



class Series(models.Model):
    id                                      = models.AutoField(primary_key=True)
    rus_name                                = models.CharField(max_length=60) 
    eng_name                                = models.CharField(max_length=60) 
    is_active                               = models.BooleanField(default=True)
    serial_of_this_series                   = models.ForeignKey(Serial, on_delete=models.CASCADE, default=True)
    season_of_this_series                   = models.ForeignKey(Season, on_delete=models.CASCADE, default=True)
    number_of_series                        = models.IntegerField(default=0, blank=True, null=True)
    slug                                    = models.SlugField(unique=False, blank=True) 
    description                             = models.TextField(max_length=700, blank=True, default=None) 
    rating                                  = models.FloatField(default=0, blank=True)  
    timestamp_rus                           = models.DateTimeField(auto_now_add=True, auto_now=False)
    updated                                 = models.DateTimeField(auto_now_add=False, auto_now=True)
    timestamp_eng                           = models.CharField(max_length=60) 
    time_of_series                          = models.DecimalField(max_digits=10, decimal_places=2, default=0)

    def get_absolute_url(self):
        return reverse('series:post_of_serie', kwargs=
                      {'serial_slug': self.serial_of_this_series.slug,
                       'season_slug': self.season_of_this_series.slug,
                       'series_slug': self.slug})

    def __str__(self):
        return "%s | %s" % (self.rus_name, self.number_of_series)

    class Meta:
        ordering                            = ["-timestamp_rus"]
        verbose_name                        = 'Series'
        verbose_name_plural                 = 'Series'

Reverse for 'post_of_serial' with arguments '()' and keyword arguments '{'serial_slug': ''}' not found. 1 pattern(s) tried: ['series/(?P[\w-]+)/$']

(lookup_view_s, args, kwargs, len(patterns), patterns) django.urls.exceptions.NoReverseMatch: Reverse for 'post_of_serial' with arguments '()' and keyword arguments '{'serial_slug': ''}' not found. 1 pattern(s) tried: ['series/(?P[\w-]+)/$']

解决方案

Change from this

slug           = models.SlugField(unique=False, blank=True)

to this

slug           = models.SlugField(unique=False)

delete from all slug fields "blank=True" and it's gonna work!

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