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假设我有以下内容models.py

from django.db import models

class Product(models.Model):
    name = models.CharField(max_length=255)
    price = models.PositiveIntegerField()

class Sales(models.Model):
    customer = models.CharField(max_length=255)
    date = models.DateField()

class SalesItem(models.Model):
    sales = models.ForeignKey(Sales)
    product = models.ForeignKey(Product)
    quantity = models.PositiveIntegerField()
    price = models.PositiveIntegerField()

我在 django admin 中使用以下内容admin.py

from django.contrib import admin
from models import Product, Sales, SalesItem

class SalesItemInline(admin.TabularInline):
    model = SalesItem
    raw_id_fields = ('product',)

class SalesAdmin(admin.ModelAdmin):
    inlines = (SalesItemInline,)

admin.site.register(Product)
admin.site.register(Sales, SalesAdmin)

为了填写新的销售项目表格,用户点击放大镜图标,选择产品,然后销售项目的产品字段将填写产品 ID。除此之外,我希望价格字段自动填充所选的 product.price 值。

实现这一目标的最惯用的 django 方法是什么?

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