在Django管理中显示ManyToMany关系的值 [英] Displaying the value of ManyToMany relationship in django admin

问题描述

我正在尝试在django管理面板中显示一个自行车品牌.我设法显示了标题，但是我在与品牌斗争.

I am trying to display a brand of a bike in my django admin panel. I have managed to display the title, but I am struggling with the brand.

这是我的模型.py:

class Bike(models.Model):
  item = models.OneToOneField(Item, on_delete=models.CASCADE)
  category = models.ManyToManyField(Category, blank=True)
  image = models.ImageField(upload_to='bikes')
  brand = models.ManyToManyField(Brand, null=True)

  def __str__(self):
      return self.item.title

class Brand(models.Model):
  name = models.CharField(max_length=20)

  def __str__(self):
      return self.name

我尝试过:

def __str__(self):
  return self.brand.name

但是什么也没显示.有什么想法可以同时显示self.item.title和品牌名称吗?

But nothing is displaying then. Any ideas how to display the self.item.title and brand name at the same time?

推荐答案

请改用此方法，看看是否可行.

Try this instead and see if it works.

`def brand_names(self):
        return ', '.join([x.name for x in self.brand.all()])`

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