试图找到最常见的五个条目 [英] Trying to find top 5 most common entries

问题描述

我正在尝试从查询中找到受伤最多的玩家，但是我无法获得正确的结果。

I am trying to find the most injured player from my query but I am having trouble getting the proper results.

我正在考虑将玩家ID放在列表，但是你如何计算重复的条目，然后产生最受伤的前5名列表？

I was thinking of putting the player ID's in a list but how do you go about counting duplicate entries and then producing a "top 5" most injured list?

这是我的models.py

Here is my models.py

class PlayerInjury(models.Model):
    player =  models.ForeignKey(Player)
    injury_type = models.ForeignKey(Injury)
    injury_date = models.DateField(verbose_name='Injured On', null=True, blank=True)
    description = models.CharField(verbose_name='Description', max_length=180, null=True, blank=True)
    status = models.ForeignKey(Status)
    projected_return = models.DateField(verbose_name='Projected Return Date', null=True, blank=True)
    hide = models.BooleanField(default=False)
    returned = models.BooleanField(default=False)
    timestamp = models.DateTimeField(auto_now_add=True)

到目前为止，我的views.py

EDIT

and what I have so far for my views.py
EDIT

def home(request):
context={}
player_list = []
most_recent = PlayerInjury.objects.all().order_by('-timestamp')[:5]
news = News.objects.all()
most_injured = PlayerInjury.objects.annotate(injury_count=Count('id')).order_by('-injury_count')[:5]
context['most_injured'] = most_injured
context['most_recent'] = most_recent
context['news'] =  news
return render_to_response('dash/home.html', RequestContext(request, context))

推荐答案

为什么不使用注释？

from django.db.models import Count

Player.objects.annotate(injury_count=Count('playerinjury')).order_by('-injury_count')[:5]

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