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我正在嘗試編寫BookApp。每次我創建一本新書時,它都會從選擇中的上一本書中加載章節字段。我如何刪除關係,但不刪除內容。我也包括圖片。Django Admin創建新對象時清除字段
#models.py
from django.db import models
class Category(models.Model):
name = models.CharField(max_length=250)
def __str__(self):
return self.name
class Author(models.Model):
name = models.CharField(max_length=250)
def __str__(self):
return self.name
class Chapter(models.Model):
name = models.CharField(max_length=500)
content = models.TextField()
def __str__(self):
return self.name
class Book(models.Model):
category = models.ForeignKey(Category)
name = models.CharField(max_length=500)
summary = models.TextField()
author = models.ForeignKey(Author)
chapter = models.ForeignKey(Chapter)
def __str__(self):
return self.name`
而在admin.py
from django.contrib import admin
from books.models import Category, Author, Chapter, Book
class BookAdmin(admin.ModelAdmin):
list_display = ('category', 'name', 'author', 'chapter')
admin.site.register(Category)
admin.site.register(Author)
admin.site.register(Chapter)
admin.site.register(Book, BookAdmin)
這裏的問題IMAG。 Added Book#1
Chapter of Book 1 still exist in loading
您是否試過https://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.ForeignKey.on_delete? –