problem lookup function

[Grigory Fateyev]

Hello!

I have myapp model:

class Category(meta.Model):
        category_name = meta.CharField(maxlength=30)
        category_image = meta.ImageField(upload_to="/var/www/html/media")

class Article(meta.Model):
        category_name = meta.ForeignKey(Category)

How to get list of category_name from class Category?

Thanks!
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