Question

我需要打印今天生日的人员名单。

我不知道在if循环中引入当前数据变量的正确方法。

personal_list.html

{% for personal in personals %}
{% ifequal personal.data_nastere|date:"d/m" '??/??' %}
    <ul>
        <li><a class="titleOmagiat" href="{% url 'personalomagiat_detail' pk=personal.pk %}">
         {{ personal.name }} {{ personal.surname }} </a>, {{ personal.birth_day|date:"d/m/Y" }}
        </li>
    </ul>
{% endifequal %}
{% endfor %}

models.py

 class Personal(models.Model):
     name = models.CharField(max_length=20)
     surname = models.CharField(max_length=20)
     birth_day = models.DateField(blank=True, null=True)

     class Meta:
         ordering = ['name']

     def __str__(self):
         return '%s %s' % (self.name, self.surname)

views.py

def personal_list(request):
    personals = Personal.objects.order_by('name')
    return render(request, 'blog/personal_list.html', {'personals': personals})

urls.py

urlpatterns = [
    url(r'^personal/$', views.personal_list, name='personal_list'),
]

在代码中告诉我正确答案。

Answer 1

过滤必须在数据库级别完成，而不是在模板中完成，否则您正在从磁盘中读取未使用的数据，这会导致性能下降。

以这种方式更新您的观点：

from django.utils import timezone


def personal_list(request):
    today = timezone.now().date()
    personals = Personal.objects.order_by('name').filter(
        birth_day__month=today.month,
        birth_day__day=today.day)
    return render(request, 'blog/personal_list.html', {'personals': personals})

这样你的模板：

<ul>
  {% for personal in personals %}
    <li><a class="titleOmagiat" href="{% url 'personalomagiat_detail' pk=personal.pk %}">
     {{ personal.name }} {{ personal.surname }} </a>, {{ personal.birth_day|date:"d/m/Y" }}
    </li>
  {% endfor %}
</ul>

如何向DJANGO模板发送当前数据的变量？

1 个答案: