有人熟悉 Django-Taggit 和 Paginator 嗎？ 當我點擊我的標簽時，我不斷收到 TypeError

Question

所以我正在關注一本關於如何使用 Taggit 將標簽添加到 Django 的數字書籍。 列表頁面也在使用分頁器，但是當我單擊一個標簽時，我得到了這個類型錯誤標簽。

如果您需要我提供更多信息，請告訴我。 我非常感謝您的所有幫助。 我很興奮，因為這是我第一個真正的 Django 項目，為朋友創建一個博客，到目前為止，除了這個我無法解決的問題外，一切進展順利。 我還想學習如何能夠查看錯誤屏幕並知道要查找什么，然后有一天如何解決我自己的問題。

再次感謝！

克里斯

這是錯誤屏幕截圖

視圖.py

from django.shortcuts import render, redirect, get_object_or_404
from django.views.generic import ListView
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.db.models import Count
from taggit.models import Tag
from .models import Post
from .forms import PostForm



class PostListView(ListView):
    queryset = Post.published.all()
    context_object_name = 'posts'
    paginate_by = 3
    template_name = 'blog/post/list.html'

def post_list(request, tag_slug=None):
    object_list = Post.published.all()
    tag = None
    if tag_slug:
        tag = get_object_or_404(Tag, slug=tag_slug)
        object_list = object_list.filter(tags__in=[tag])
    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, 'tag': tag})



def post_detail(request, year, month, day, post):
    post = get_object_or_404(Post, slug=post, status='published', publish__year=year, publish__month=month, publish__day=day)
    post_tags_ids = post.tags.values_list('id', flat=True)
    similar_posts = Post.published.filter(tags__in=post_tags_ids).exclude(id=post.id)
    similar_posts = similar_posts.annotate(same_tags=Count('tags')).order_by('-same_tags','-publish')[:3]
    return render(request, 'blog/post/detail.html', {'post': post, 'similar_posts': similar_posts})


def create_post(request):
    form = PostForm()

    if request.method == 'POST':
        form = PostForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('blog:post_list')

    return render(request, 'blog/post/post_form.html', {'form': form})



def update_post(request, pk):
    post = Post.objects.get(title=pk)
    form = PostForm(instance=post)

    if request.method == 'POST':
        form = PostForm(request.POST, instance=post)
        if form.is_valid():
            form.save()
            return redirect('blog:post_list')

    return render(request, 'blog/post/post_form.html', {'form': form})



def delete_post(request, pk):
    post = Post.objects.get(title=pk)
    if request.method == 'POST':
        post.delete()
        return redirect('blog:post_list')
        
    context = {'object': post}
    return render(request, 'blog/post/delete_post.html', context)



def about(request):
    return render(request, 'blog/post/about.html')



def send_mail(request):
    return render(request, 'blog/post/contact.html')

模型.py

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
from django.urls import reverse
from taggit.managers import TaggableManager


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

class Post(models.Model):
    tags = TaggableManager()

    def get_absolute_url(self):
        return reverse('blog:post_detail', args=[self.publish.year, self.publish.month, self.publish.day, self.slug])

    objects = models.Manager()
    published = PublishedManager()

    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, on_delete=models.CASCADE, related_name='blog_post')
    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='published')

    class Meta:
        ordering = ('-publish',)
    def __str__(self):
        return self.title

網址.py

from . import views

app_name = 'blog'

urlpatterns = [
    path('', views.post_list, name='post_list'),
    path('tag/<slug:tag_slug>/', views.post_list, name='post_list_by_tag'),
    path('<int:year>/<int:month>/<int:day>/<slug:post>/', views.post_detail, name='post_detail'),

    path('create_post/', views.create_post, name='create_post'),
    path('update_post/<str:pk>/', views.update_post, name='update_post'),
    path('delete_post/<str:pk>/', views.delete_post, name='delete_post'),
    
    path('send_mail/', views.send_mail, name='send_mail'),
    path('about/', views.about, name='about'),
]

列表.html

{% extends 'blog/base.html' %}

{% block title %} Healthy Lifestyles with Gretchen {% endblock %}

{% block content %}

{% if tag %}
<h2>Posts tagged with "{{ tag.name }}" </h2>
{% endif %}

{% for post in posts %}
<div id="cards">
<div id="supplyPhoto"></div>
<h2 class="cardHeading">
    <a href="{{post.get_absolute_url}}">{{post.title|truncatewords:8}}</a>
</h2>

<p class="tagsText">
    
    TAGS: {% for tag in post.tags.all %}

    <a href="{% url 'blog:post_list_by_tag' tag.slug %}">{{ tag.name }}</a>

    {% if not forloop.last %}, {% endif %}
    {% endfor %}
</p>

<p class="maintext"> {{post.body|truncatewords:40}} </p>
<p class="author"><i> Published by: {{post.author}} </i> </p>
<p class="date"> <i> {{post.updated}} </i></p>
</div>
{% endfor %}

{% include "pagination.html" with page=posts %}

{% endblock %}

分頁.html

<div class="pagination">
    <span class="step_links">
        {% if page.has_previous %}
        <a class="pagination" href="?page={{ page.previous_page_number }}">< PREVIOUS</a>
        {% endif %}
        <span class="current">
        <p class="footer">PAGE  {{page.number}}  OF  {{page.paginator.num_pages}}</p>
        </span>
        {% if page.has_next %}
        <a class="pagination" href="?page={{ page.next_page_number }}">NEXT ></a>
        {% endif %}
    </span>
</div>

Answer 1

我正在關注同一本書。

這是 Taggit 和 Django 更新的問題。 現在有一個更新。

pip 卸載 django-taggit

pip 安裝 git+https://github.com/jazzband/djangotaggit.git@d0833966d357ed1e1b9b1f40c39c1ed99affbf9b