Django模型允许多个

Question

所以我想创建一个模型，假设“汽车”我想实现字段 detail_name 和 detail_descdetail_name  = models.CharField(max_length=200) detail_desc= models.CharField(max_length=200)但我希望管理员能够添加另一个 detail_name 和 detail_desc，如果他们愿意的话。我该如何实施？

Answer 1

您可以为此目的使用外键。

然后您的代码将与此类似：

class Car(models.Model):

    # some code here

class DetailInfo(models.Model):

    car = models.ForeignKey(Car, on_delete=models.CASCADE, related_name='details')

    detail_name  = models.CharField(max_length=200)

    detail_desc= models.CharField(max_length=200)

然后您可以通过以下方式查看所有详细信息：

car = Car.objects.first()  # just example, load first instance of Car

detail_infos = car.details.all()  # now detail_infos include queryset of all DetailInfo instances, that connected to Car

在django admin中，您可以添加details为内联（例如，请参见此链接）。

例子

# admin.py

from django.contrib import admin

from .models import Car, DetailInfo

class DetailInfoInline(admin.TabularInline):  # you can use admin.TabularInline or admin.StackedInline here

    model = DetailInfo

@admin.register(Car)  # shortcut for admin.site.register()

class CarAdmin(admin.ModelAdmin):

    inlines = [DetailInfoInline]

Answer 2

按照我更新的 TabularInline 的代码

admin.py

class DetailInfoInline(admin.TabularInline):

    model = DetailInfo

class ShowCaseAdmin(admin.ModelAdmin):

    inlines = [

        DetailInfoInline,

    ]

models.py

class DetailInfo(models.Model):

    link = models.CharField(max_length=200)

    showcase = models.ForeignKey(ShowCase, on_delete=models.CASCADE, related_name='details')