我在对某些项目进行排序时遇到了一些难题。我有一个名为“featured”的字段,它是一个 bool 值。我试图首先显示特色硬币,然后其余的将按不同的指标排序。在此代码中,我使用 pub_date。
但是,当我在模板中为特色项目添加 if 语句时,它仍然显示那些设置为 false 的项目。我将在下面发布代码。
index.html 循环和 if
{% if featured_coins_list %}
{% for coin in featured_coins_list %}
<div class="large-6 medium-6 cell">
<h2><a href="/coins/{{ coin.id }}/">{{ coin.name }}</a></h2>
<p>Ticker: {{ coin.ticker }}</p>
<p>{{ coin.summary }}</p>
<a href="/coins/{{ coin.id }}" class="button">More Info</a></strong>
</div>
{% endfor %}
{% endif %}
{% if latest_coins_list %}
{% for coin in latest_coins_list %}
<div class="large-6 medium-6 cell">
<h2><a href="/coins/{{ coin.id }}/">{{ coin.name }}</a></h2>
<p>Ticker: {{ coin.ticker }}</p>
<p>{{ coin.summary }}</p>
<a href="/coins/{{ coin.id }}" class="button">More Info</a></strong>
</div>
{% endfor %}
</div>
{% else %}
<p>No coins are available.</p>
{% endif %}
索引的views.py
def index(request):
featured_coins_list = Coin.objects.order_by('-featured')[:4]
latest_coins_list = Coin.objects.order_by('-pub_date')[:8]
context = {'featured_coins_list': featured_coins_list,
'latest_coins_list': latest_coins_list}
return render(request, 'coins/index.html', context)
模型.py
class Coin(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=100)
ticker = models.CharField(max_length=5)
featured = models.BooleanField(default=False)
logo = models.ImageField(upload_to='uploads/', verbose_name='image')
website = models.URLField(max_length=200, default="https://example.com/")
reddit = models.URLField(max_length=200, default="https://reddit.com/r/")
twitter = models.URLField(max_length=200, default="https://twitter.com/")
summary = models.CharField(max_length=500, blank=True)
description = models.TextField()
pub_date = models.DateTimeField('date published')
def __str__(self):
return self.ticker
def is_featured(self):
return self.featured
def was_published_recently(self):
return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
我应该如何列出首先设置为 true 的特色硬币,然后显示其余项目?
最佳答案
您需要在查询集中过滤featured=True
。
def index(request):
featured_coins_list = Coin.objects.filter(featured=True).order_by('-featured')[:4]
latest_coins_list = Coin.objects.order_by('-pub_date')[:8]
context = {'featured_coins_list': featured_coins_list,
'latest_coins_list': latest_coins_list}
return render(request, 'coins/index.html', context)
关于python - Django:显示 "featured"项目?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50312181/