如何在管理界面中显示 M2M 模型的中间字段？

发布于 2024-11-30 12:52:09 字数 987 浏览 0 评论 0原文

我有以下 model.py 文件，其中费用模型具有带有中间模型会员资格的 M2M 田间农场。

class Farm(models.Model):
    farmNo = models.CharField(max_length=100)
    size = models.CharField(max_length=50)
    description = models.TextField()

class Charges(models.Model):
    chargeDescription = models.TextField(verbose_name="Description")
    chargeType = models.CharField(max_length=10,choices=CHARGE_TYPE)
    farms = models.ManyToManyField(Farm,through='Membership')

    class Meta:
        verbose_name_plural = "Charges"

class Membership(models.Model):
    farm = models.ForeignKey(Farm)
    charges = models.ForeignKey(Charges)
    paymentDate = models.DateField()
    paymentStatus = models.BooleanField(default=False)

我的问题是，当我使用 django 管理应用程序为收费模型“农场”创建新对象时，M2mM 字段不会显示，这样我就无法将费用分配给农场。我想知道为什么小部件没有显示，我该如何再次显示显示该小部件，供用户在创建费用时选择农场。

我尝试重写 def formfield_for_manytomany(self, db_field, request=None, **kwargs): 方法，该方法导致小部件不显示在屏幕上，但仍然没有出现在屏幕上。

请帮忙谢谢

原文

I have following model.py file in which Charges model have M2M field farms with an intermediate model Membership.

class Farm(models.Model):
    farmNo = models.CharField(max_length=100)
    size = models.CharField(max_length=50)
    description = models.TextField()

class Charges(models.Model):
    chargeDescription = models.TextField(verbose_name="Description")
    chargeType = models.CharField(max_length=10,choices=CHARGE_TYPE)
    farms = models.ManyToManyField(Farm,through='Membership')

    class Meta:
        verbose_name_plural = "Charges"

class Membership(models.Model):
    farm = models.ForeignKey(Farm)
    charges = models.ForeignKey(Charges)
    paymentDate = models.DateField()
    paymentStatus = models.BooleanField(default=False)

My problem is that when i create a new object using django admin app for Charges model "farms" M2mM field doesnot shows up and that way i cannot assign charges to farms.I am wondering why the widget is not showing up and how can I again show that widget for user to select farms while create a charge.

I tried overriding def formfield_for_manytomany(self, db_field, request=None, **kwargs): method which is causing widget not to show on screen but still its not appearing on screen.

Please help
Thanks

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

感性 2024-12-07 12:52:09

它不会，因为它无法在不收集会员资格附加数据的情况下添加农场。您必须使用内联，但即便如此，您也必须内联 Membership，而不是 Farm。

class MembershipInlineAdmin(admin.TabularInline):
    class Meta:
        model = Membership
        extra = 1

class ChargesAdmin(admin.ModelAdmin):
    inlines = [
        MembershipInlineAdmin,
    ]

admin.site.register(Charges, ChargesAdmin)

然后，您可以选择现有农场或以正常方式为您添加的每个会员创建新农场。

It won't because it can't add a Farm without collecting the additional data on Membership. You have to use inlines, but even then, you have to inline Membership, not Farm.

class MembershipInlineAdmin(admin.TabularInline):
    class Meta:
        model = Membership
        extra = 1

class ChargesAdmin(admin.ModelAdmin):
    inlines = [
        MembershipInlineAdmin,
    ]

admin.site.register(Charges, ChargesAdmin)

You can then select an existing Farm or create a new Farm in the normal way on each Membership you add.

回复收藏 0 原文

~没有更多了~