添加标签功能

• 安装

pip install django-taggit==0.17.1

• 注册

settings.py

INSTALLED_APPS = (
	...
    'taggit',
)

• 使用

models.py

from taggit.managers import TaggableManager

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

command

python manage.py makemigrations blog
python manage.py migrate blog


shell

from blog.models import Post
post = Post.objects.get(slug='one-more-post')
post.tags.add('music', 'jazz', 'django')
post.tags.all()
post.tags.remove('django')


detail.html

{% with post.tags.all as tags %}

{% for tag in tags %}
	{{ tag.name }}
{% endfor %}

{% endwith %}

views.py
from taggit.models import Tag

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

def post_detail(request, year, month, day, slug):
	...
    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')[:4]
	...