admin.py

#encoding: utf-8
from django.contrib import admin
from django import forms
from app1.models import *
from django.contrib.auth.models import User

class CustomForm(forms.ModelForm):
    class Meta:
        model = Data

    def clean_d1(self):
        if self.data["d1"]!="Chunjie Yanxu":
            raise forms.ValidationError('d1必须输入Chunjie Yanxu')
        return self.cleaned_data["d1"]
        
class DataAdmin(admin.ModelAdmin):
    form =  CustomForm

admin.site.register(Data, DataAdmin)

models.py

from django.db import models

class Data(models.Model):
    d1 = models.CharField(max_length=100)
    d2 = models.CharField(max_length=100)

    def __unicode__(self):
        return self.d1