我试图循环遍历一个对象,并将结果存储并存储在列表中,以便可以在django模板中使用它并显示它。我试图复制自己在代码中其他位置的内容以满足我的需要,但是它不起作用。我试图重复这个
{% for tag in instance.tags.all %}
{{ tag.post_set.all }}
{% endfor %}
这会在一个块中返回所有内容。我希望能够遍历它,所以我尝试了这个
links = []
for t in tag:
links.append(
t.post_set.all()
)
mylink = links
context = {
"title": "detail ",
"instance": instance,
"hops": mylink
}
但这没用。将结果从循环中删除并将其存储在列表中的正确语法是什么,然后可以在模板中使用该列表。欢迎所有帮助或建议
编辑:
我的看法
def post_detail(request, slug=None):
instance = get_object_or_404(Post, slug=slug)
tag = instance.tags.all
links = []
for t in tag:
links.append(
t.post_set.distinct()
)
share_string = quote_plus(instance.content)
tag = instance.tags.all()
context = {
"title": "detail ",
"instance": instance,
"share_string": share_string,
"tag": tag
}
return render(request, "posts/post_detail.html", context)
class Tag(models.Model):
title = models.CharField(max_length=250)
slug = models.SlugField(max_length=200, unique=True)
timestamp = models.DateTimeField(auto_now=False, auto_now_add=True)
updated = models.DateTimeField(auto_now=True, auto_now_add=False)
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse("posts:tag_index", kwargs={"slug": self.slug})
class Meta:
ordering = ["-timestamp"]
class Post(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL, default=1)
slug = models.SlugField(unique=True)
title = models.CharField(max_length=120)
image = models.ImageField(upload_to=upload_location, null=True, blank=True,
width_field="width_field",
height_field="height_field")
height_field = models.IntegerField(default=0)
width_field = models.IntegerField(default=0)
content = models.TextField()
draft = models.BooleanField(default=False)
publish = models.DateField(auto_now=False, auto_now_add=False)
timestamp = models.DateTimeField(auto_now=False, auto_now_add=True)
updated = models.DateTimeField(auto_now=True, auto_now_add=False)
tags = models.ManyToManyField(Tag)
objects = PostManager()
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse("posts:detail", kwargs={"slug": self.slug})
class Meta:
ordering = ["-timestamp"]
def create_slug(instance, new_slug=None):
slug = slugify(instance.title)
if new_slug is not None:
slug = new_slug
qs = Post.objects.filter(slug=slug).order_by("-id")
exists = qs.exists()
if exists:
new_slug = "%s-%s" % (slug, qs.first().id)
return create_slug(instance, new_slug=new_slug)
return slug
def pre_save_post_receiver(sender, instance, *args, **kwargs):
if not instance.slug:
instance.slug = create_slug(instance)
pre_save.connect(pre_save_post_receiver, sender=Post)
这就是我所拥有的
最好对您想要的帖子进行单个查询。
links = Post.objects.filter(link__tag__instancemodel=instance)
instancemodel
型号的名称在哪里instance
?
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我来说两句