鉴于以下模型和观点,对于任何给定的俱乐部,我试图在模板中显示该俱乐部的可用法院(“法院”)和可用时间(“avail_time”)。我无法做到这一点。
型号:
from django.db import models
class Club(models.Model):
establishment = models.CharField(max_length=200)
address = models.CharField(max_length=200)
def __unicode__(self):
return self.establishment
class Available(models.Model):
club = models.ForeignKey(Club)
court = models.CharField(max_length=200)
avail_time = models.DateTimeField('available time')
def __unicode__(self):
return self.court
class Taken(models.Model):
club = models.ForeignKey(Club)
court = models.ForeignKey(Available)
taken_time = models.DateTimeField('taken time')
userid = models.EmailField(max_length = 75)
查看:
def avail_times(request, club_id):
p = get_object_or_404(Club,pk=club_id)
return render_to_response('reserve/templates/avail_times.html', {'club':p})
模板:
{% for court in club.court_set.all %}
{{court.court }}
{% endfor %}
答案 0 :(得分:1)
嗯,你似乎没有Court模型,所以我不确定你为什么要打电话给court_set.all
。您可以使用club.available_set.all
来显示该俱乐部的可用实例列表,这可能就是您的意思。
答案 1 :(得分:0)
第一步是适当地设置模型。俱乐部有法院和法院有时间。俱乐部没有“可用时间”,这就是您现在设置的方式。此外,“take”是可用时间的状态;它不应该是一个模型本身。尝试类似:
class Club(models.Model):
establishment = models.CharField(max_length=200)
address = models.CharField(max_length=200)
def __unicode__(self):
return self.establishment
class Court(models.Model):
club = models.ForeignKey(Club, related_name='courts')
name = models.CharField(max_length=200)
class CourtTime(models.Model):
AVAILABLE = 0
TAKEN = 1
STATUS_CHOICES = (
(AVAILABLE, 'Available'),
(TAKEN, 'Taken'),
)
court = models.ForeignKey(Club, related_name='times')
time = models.DateTimeField('available time')
status = models.PositiveSmallIntegerField(choices=STATUS_CHOICES, default=STATUS_CHOICES[AVAILABLE])
def __unicode__(self):
return self.court
然后,我建议CourtTime
上的自定义管理器返回可用/采用的查询集:
class CourtTimeQuerySet(models.query.QuerySet):
def available(self):
return self.filter(status=CourtTime.STATUS_CHOICES[CourtTime.AVAILABLE])
def taken(self):
return self.filter(status=CourtTime.STATUS_CHOICES[CourtTime.TAKEN])
class CourtTimeManager(models.Manager):
use_for_related_fields = True
def get_query_set(self, *args, **kwargs):
return CourtTimeQuerySet(self.model)
def available(self, *args, **kwargs):
return self.get_query_set().available(*args, **kwargs)
def taken(self, *args, **kwargs):
return self.get_query_set().taken(*args, **kwargs)
然后,将其添加到您的模型中:
class CourtTime(models.Model):
...
objects = CourtTimeManager()
完成所有操作后,您只需在模板中执行以下操作:
{% for court in club.courts.all %}
<h2>{{ court.name }}</h2>
<ul>
{% for time in court.times.available %}
<li>{{ time|date:"m/d/Y g:i A" }}</li>
{% endfor %}
</ul>
{% endfor %}