django 4：类型对象'Post'没有属性'published'

wqsoz72f 于 2023-03-24 发布在 Go

关注(0)|答案(2)|浏览(144)

数据库正常，已创建迁移
问题object_list = Post.published.all（）
职位：

class Post(models.Model):
    STATUS_CHOICES = (
        ('draft', 'Draft'),
        ('published', 'Published'),
    )
    title = models.CharField(max_length=250)
    slug = models.SlugField(max_length=250, unique_for_date='publish')
    author = models.ForeignKey(User, related_name='blog_posts', on_delete=models.CASCADE)
    body = models.TextField()
    publish = models.DateTimeField(default=timezone.now)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='draft')

意见：

def post_list(request):
    object_list = Post.published.all()
    paginator = Paginator(object_list, 3)
    page = request.GET.get('page')
    try:
        posts = paginator.page(page)
    except PageNotAnInteger:
        posts = paginator.page(1)
    except EmptyPage:
        posts = paginator.page(paginator.num_pages)
    return render(request,
                  'blog/post/list.html',
                  {'page': page,
                   'posts': posts})

迁移：

class Migration(migrations.Migration):

    initial = True

    dependencies = [
        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
    ]

    operations = [
        migrations.CreateModel(
            name='Post',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
                ('title', models.CharField(max_length=250)),
                ('slug', models.SlugField(max_length=250, unique_for_date='publish')),
                ('body', models.TextField()),
                ('publish', models.DateTimeField(default=django.utils.timezone.now)),
                ('created', models.DateTimeField(auto_now_add=True)),
                ('updated', models.DateTimeField(auto_now=True)),
                ('status', models.CharField(choices=[('draft', 'Draft'), ('published', 'Published')], default='draft', max_length=10)),
                ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='blog_posts', to=settings.AUTH_USER_MODEL)),
            ],
        ),
    ]

url main app：

urlpatterns = [
    re_path(r'^admin/', admin.site.urls),
    re_path(r'^blog/', include(('blog.urls', 'blog'), namespace='blog')),
]

url博客应用程序：

urlpatterns = [
    # post views
    re_path(r'^$', views.post_list, name='post_list'),
    re_path(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/'\
        r'(?P<post>[-\w]+)/$',
        views.post_detail,
        name='post_detail'),
]

第一次每次堆栈溢出，抱歉的错误 *

注册在数据库列“published”. idk什么问题

django

来源：https://stackoverflow.com/questions/75805719/django-4-type-object-post-has-no-attribute-published

2条答案

按热度按时间

a11xaf1n1#

正如dostogircse171所指出的，通过子类化models.Manager并定义一个方法来过滤发布的帖子，然后创建一个自定义管理器，将该自定义管理器添加到您的Post模型中，以便能够访问Post.published.all()
试试这个：

from django.db import models

class PublishedManager(models.Manager):
    def published(self):
        return self.filter(status='published')

class Post(models.Model):
    STATUS_CHOICES = (
        ('draft', 'Draft'),
        ('published', 'Published'),
    )
    title = models.CharField(max_length=250)
    slug = models.SlugField(max_length=250, unique_for_date='publish')
    author = models.ForeignKey(User, related_name='blog_posts', on_delete=models.CASCADE)
    body = models.TextField()
    publish = models.DateTimeField(default=timezone.now)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='draft')    
    published = PublishedManager()

赞(0）回复(0）举报 2023-03-24

rxztt3cl2#

你的orm语法是错误的object_list = Post.published.all()在你的post_list函数的视图，正确的语法是object_list = Post.objects.all(status="published")，然后你的代码将看起来像这样：

def post_list(request):
    object_list = Post.objects.all(status="published") # ----->> Change here
    paginator = Paginator(object_list, 3)
    page = request.GET.get('page')
    try:
        posts = paginator.page(page)
    except PageNotAnInteger:
        posts = paginator.page(1)
    except EmptyPage:
        posts = paginator.page(paginator.num_pages)
    return render(request,
                  'blog/post/list.html',
                  {'page': page,
                   'posts': posts})

赞(0）回复(0）举报 2023-03-24

我来回答

django 4：类型对象'Post'没有属性'published'

2条答案

相关问题

热门标签

最新问答