我有两个这样的模型：
class File(models.Model):
users = models.ForeignKey(User)
file_name = models.CharField(max_length=100)
type = models.CharField(max_length=10)
source = models.CharField(max_length=100)
start_date = models.TextField()
end_date = models.TextField()
duration = models.TextField()
size_overview = models.IntegerField()
size = models.TextField()
flag = models.TextField()
#delete_date = models.CharField(max_length=100, null=True, blank=True)
class Share(models.Model):
users = models.ForeignKey(User)
files = models.ForeignKey(File)
shared_user_id = models.IntegerField()
shared_date = models.TextField()
我想计算共享文件的人。例如，如果文件 ok.txt 与 2 人共享，我想显示 file_information 并显示 shared_with coloumn 2 的值。我这样做：
file_s = Share.objects.filter(users_id=log_id)
shared_with = Share.objects.filter(files_id__in = file_s).values_list('shared_user_id', flat=True).distinct().count()
但它为每个文件显示相同的 shared_with 编号。我究竟做错了什么？
编辑：实际上我的查询是正确的，但我不知道如何在模板中调用它：
#views.py
def shared_by_me(request):
try:
log_id = request.user.id
username = request.user.username
#Shared by me file information
file_s = Share.objects.filter(users_id=log_id)
b = [i.files_id for i in file_s]
c = map(str, b)
c = ''.join(c)
shared_with = Share.objects.filter(files_id__in = file_s).values_list('shared_user_id', flat=True).distinct().count()
shared_file = File.objects.filter(id__in= Share.objects.filter(users_id = log_id).values_list('files', flat=True))
#shared_username = User.objects.filter(id__in= Share.objects.filter(users_id = log_id).values_list('shared_user_id', flat=True))
shared_username = Share.objects.filter(shared_user_id=log_id)
#shared_file = File.objects.filter(id__in = c, users__id = log_id)
return render_to_response('shared_by_me.html', {'shared_by_me':shared_file, 'shared_with':shared_with, 'username':username, 'shared_username':shared_username}, context_instance=RequestContext(request))
except ValueError:
return render_to_response('shared_by_me.html', {'username':username}, context_instance=RequestContext(request))
#template:
{% for choice in shared_by_me %}
<tr class="oddclass">
<td><input type="checkbox" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}" onchange="checkChecked()"/></td>
<td><label for="choice{{ forloop.counter }}">{{ choice.file_name }}</label></td>
<td>{{ choice.type }}</td>
<td>{{ choice.size }}</td>
<td>{{ choice.end_date }}</td>
<td><a href="#" onclick="share()">{{ shared_with }}</a></td>
{% endfor %}
</tr>