[英]Django 'if not' statement is not working properly
我正在嘗試這樣做,以便當我在所有草稿上簽名時,用紅色字母顯示DRAFT字樣,因此我嘗試了以下操作
<h6 id="date">{% if post.draft %}<div id="draft">DRAFT</div>{% endif %} </h6>
但它不起作用,但如果我這樣做
<h6 id="date">{% if post.publish %}<div id="draft">DRAFT</div>{% endif %} </h6>
它行得通,並且因為那樣行得通,所以我認為使用“ not”會行得通
<h6 id="date">{% if not post.publish %}<div id="draft">DRAFT</div>{% endif %} </h6>
但這沒用。 這是我的模特
class Post(models.Model):
STATUS_CHOICES = (
('draft', 'Draft'),
('published', 'Published'),
)
title = models.CharField(max_length=250, unique=True)
slug = models.SlugField(max_length=250,
unique_for_date='publish')
image = models.ImageField(upload_to=upload_location,
null=True,
blank=True,
height_field='height_field',
width_field='width_field')
image_url = models.CharField(max_length=500,
null=True,
blank=True,
)
height_field = models.IntegerField(default=0,
null=True,
blank=True,
)
width_field = models.IntegerField(default=0,
null=True,
blank=True,
)
author = models.ForeignKey(User,
related_name='blog_posts',
null=True,
blank=True,)
body = models.TextField(null=True, blank=True,)
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')
video = models.BooleanField(default=False)
video_path = models.CharField(max_length=320,
null=True,
blank=True,)
class Meta:
ordering = ('-publish',)
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse('blog:post_detail', kwargs={"slug": self.slug})
objects = models.Manager() # The default manager.
published = PublishedManager() # Our custom manager.
tags = TaggableManager(blank=True)
這是我認為的摘錄
if request.user.is_staff or request.user.is_superuser:
object_list = Post.objects.all().order_by('-id')
else:
object_list = Post.published.all().order_by('-id')
為什么它可以與發布一起工作,但不能“如果不是post.publish”
在模板中,您應該使用:
{% if post.status == 'draft' %}
您的模型上有以下字段:
status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='draft')
您只需要檢查帖子狀態的字段值是否為草稿。
由於沒有字段draft
,因此無法檢查post.draft
。
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