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我一直在试图找出我怎么能查询:l,最喜欢的白板特定类别Django的查询最喜欢
目前,我正在被查询所有特定类别的白板对象。 我的一个解决方案是由董事会通过的喜欢,但我只是不能想办法计数查询来查询其
此刻一个例子,我可以检索为特定类别的白板对象,现在我怎么能找到一个特定类别最喜欢的白板。
有人可以帮助我创建将查询类的最喜欢板功能,所以我可以在逻辑上明白我怎么可以在以后创建自己的。谢谢
class WhiteBoard(models.Model):
ENGLISH = 'ENGLISH'
MATH = 'MATH'
SCIENCE = 'SCIENCE'
BIOLOGY = 'BIOLOGY'
CATEGORY = (
(ENGLISH , 'English'),
(MATH, 'Math'),
(SCIENCE, 'Science'),
(BIOLOGY, 'Biology'),
)
Category =models.CharField(max_length=30,choices=CATEGORY)
user = models.ForeignKey(User)
name = models.CharField(max_length=100)
picture = models.OneToOneField('Picture',related_name='picture',blank=True,null=True)
def __unicode__(self):
return self.name
class LikeBoard(models.Model):
user = models.ForeignKey(User)
Whiteboard = models.ForeignKey(WhiteBoard)
created = models.DateTimeField(auto_now_add=True)
我views.py
def WhiteBoardFinder(request):
form = WhiteBoardFinderForm(request.POST)
fo = WhiteBoardFinderForm()
if form.is_valid():
Category = form.cleaned_data['Category']
Whiteboard = WhiteBoard.objects.filter(Category=Category)
return render(request,"boardfinder.html",{"board":board,"fo":fo})
return render(request,"boardfinder.html",{"fo":fo})
boardfinder.html
<form method="POST" enctype="multipart/form-data">
{% csrf_token %}
{{ fo.as_p }}
<input type = "submit" value= "Find Board" />
</form>
{% if board %}
<ul>
{% for b in board %}
<li><a href ="{% url world:Boat b.id %}">{{ b.name }}</li>
{% if b.picture %}
<br><img src="{{ b.picture.image.url }}">
{% endif %}
{% endfor %}
</ul>
{% endif %}
我forms.py
class BoardFinderForm(forms.ModelForm):
class Meta:
model = WhiteBoard
fields = ('Category',)
donkeyboy是你吗? – 2013-03-22 06:43:28