adminの入力項目のラベル・エラーメッセージなど

main.py

# ref: https://docs.djangoproject.com/en/2.2/topics/forms/modelforms/#overriding-the-default-fields
from django import forms
class fooForm(forms.ModelForm):
	class Meta:
		model = foo
		fields = ('name',)

		labels = {
            'name': 'なまえ',
        }
		help_texts = {
			'name': 'いいかんじのなまえをいれてね',
        }
		error_messages = {
			'name': {
				'max_length': "なまえがながいよ",
			},
		}