Question

Number模型是没有表的假模型，我不应该保存它。我需要的是将所有内联Number.number保存为Message.receiver。但是save_model首先调用并在保存Message cals之后保存刚刚传递的Number。我需要从Number内联模型访问父消息模型。我试图从NumberAdmin重载save_model（），但没有成功。我知道什么设计是坏的，但它是遗产。

models.py

class Message(models.Model):
    receiver = models.BigIntegerField()
    text = models.TextField(blank=True, null=True)

    class Meta:
        db_table = 'messages'

    def __str__(self):
        return "{}".format(self.text)


class Number(models.Model):
    message = models.ForeignKey("Message", related_name='receivers')
    number = models.BigIntegerField()

    class Meta:
        verbose_name = "ReceiverNumber"
        verbose_name_plural = "ReceiverNumbers"
        managed = False

    def __str__(self):
        return self.number

admin.py

class NumberInline(admin.TabularInline):
    model = Number
    extra = 0
    fields = ('number',)


class NumberAdmin(admin.ModelAdmin):

    class Meta:
        model = Number


class MessageAdmin(admin.ModelAdmin):
    inlines = (ReceiverNumberInline,)

    class Meta:
        model = Message

Answer 1

我不确定我是否完全理解这个问题，但您是否尝试覆盖save模型的Number方法？

class Number(models.Model):
    message = models.ForeignKey("Message", related_name='receivers')
    number = models.BigIntegerField()

    class Meta:
        verbose_name = "ReceiverNumber"
        verbose_name_plural = "ReceiverNumbers"
        managed = False

    def __str__(self):
        return self.number

    def save(self, *args, **kwargs):
        # do whatever you need without invoking super().save()

从django admin中的伪内联模型更新父模型

1 个答案: