Django fix Admin plural

Well well, it seems like the Meta class approach still works. So placing a meta class inside your model will still do the trick:

class Category(models.Model):
    class Meta:
        verbose_name_plural = "categories"

Note that we use the lower case here, as django is smart enough to capitalize it when we need it.

I find setting this option in model-class weird as opposed to the admin.py file. Here is the location in the dev docs where it is described:
http://docs.djangoproject.com/en/dev/ref/models/options/#verbose-name-plural

for that you need to add meta classes for models

class Category(models.Model):
    --- model field here ---
    class Meta: 
        verbose_name = "Category"
        verbose_name_plural = "Categories"

Bonus for your models admin in apps.py

class CategoryConfig(AppConfig):
    name = "Category"
    verbose_name = "Categories"