我刚开始在Django工作。我的问题，在解决与slug我得到一个错误时，发送一个请求到Slug。
这是我的错误：Articles matching query does not exist.
迁移时也会出现错误。
这是我的错误：django.db.utils.OperationalError:table "bloges_category" already exists

from django.db import models
from django.contrib.auth.models import User
from django.urls import reverse
from django.utils.text import slugify

    class Articles(models.Model):
        Writer = models.ForeignKey(User, on_delete=models.CASCADE)
        category = models.ManyToManyField(Category)
        Title = models.CharField(max_length=40, unique=True)
        Body = models.TextField()
        Image = models.ImageField(upload_to='articles')
        Time = models.DateTimeField(editable=False, auto_now_add=True)
        Update = models.DateTimeField(auto_now=True)
        slug = models.SlugField(blank=True, unique=True)
    
    def save(
            self, force_insert=False, force_update=False, using=None, update_fields=None):
        self.slug = slugify(self.Title)
        super(Articles, self).save()
    
    def get_absolute_url(self):
        return reverse("bloges:articles_detail", args=[self.slug])

字符串
我的看法：

from django.shortcuts import render
    from bloges.models import Articles
    
    
    def post(request, slug):
        articles = Articles.objects.get(slug=slug)
        return render(request, 'bloges/post-details.html', {"postartic": articles})

型
我的网址：

from django.urls import path
from . import views

app_name = 'bloges'
urlpatterns = [
    path("post/<slug:slug>", views.post, name="articles_detail")
]

型
发送请求后出错：
Articles matching query does not exist.个