Django：获取模板中ForeignKey项目的计数？ [英] Django: get count of ForeignKey item in template?

问题描述

直截了当的问题-很抱歉，如果重复的话，但如果这样我找不到答案。

Straightforward question - apologies if it is a duplicate, but I can't find the answer if so.

我有一个用户模型和一个提交模型，例如

I have a User model and a Submission model, like this:

class Submission(models.Model):
    uploaded_by = models.ForeignKey('User')
class User(models.Model):
    name = models.CharField(max_length=250 )

如何显示模板中每个用户的提交数量？我已经试过 {{user.submission.count}} ，就像这样：

How can I show the number of Submissions made by each user in the template? I've tried {{ user.submission.count }}, like this:

for user in users:
    {{ user.name }} ({{ user.submission.count }} submissions)

但没有运气...

推荐答案

尝试一下

{{user.submission_set.all|length}}

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