Django保存數(shù)據(jù)時(shí)報(bào)錯(cuò) NOT NULL constraint failed

添加數(shù)據(jù)后保存時(shí)報(bào)錯(cuò)

NOT NULL constraint failed：booktest_bookinfo.bpub_data

源代碼

class BookInfo(models.Model):
    btitld=models.CharField(max_length=20)
    bpub_data=models.DateTimeField()

class HeroInfo(models.Model):
    hname=models.CharField(max_length=10)
    hgender=models.BooleanField()
    hcontent=models.CharField(max_length=1000)
    hbook=models.ForeignKey(BookInfo, on_delete=models.CASCADE)