Django的 - 管理：編輯子模型沒有inlineForm

Question

標準的例子：

class Author(models.Model): 
    name = models.CharField(max_length=100) 

class Book(models.Model): 
    title = models.CharField(max_length=100) 
    author = models.ForeignKey(Author) 
    #... Many other fields ... 

我想從Author改變頁面編輯Book秒。
我試過InlineModelAdmin，但由於Book有很多字段，所以編輯並不容易。
這就是爲什麼我試圖把作者/更改模板上的兒童的鏈接。

<ul> 
    <li><a href="{% url admin:content_scribpart_add %}">Add a Book</a></li> 
{% for book in original.book_set.all %} 
    <li><a href="{% url admin:myapp_book_change book.id %}">Edit {{ book }}</a></li> 
{% endfor %} 
</ul> 

但是有幾個問題

• 我如何預填充相關Author ID在Book形式
• 我怎樣才能讓保存按鈕返回到相關Author
• 我在正確的軌道上嗎？

Answer 1

是的，當然。

1. 追加author主鍵GET參數，您的網址：

   <ul> 
       <li><a href="{% url admin:content_scribpart_add %}?author={{ object_id }}">Add a Book</a></li> 
   {% for book in original.book_set.all %} 
       <li><a href="{% url admin:myapp_book_change book.id %}?author={{ object_id }}">Edit {{ book }}</a></li> 
   {% endfor %} 
   </ul> 
   

2. 修改書相應ModealAdmin，覆蓋response_add() and response_change()。請注意，我們也override formfield_for_forein_key以預填充author場：

   from django.http import HttpResponseRedirect 
   from django.core.urlresolvers import reverse 
   
   class BookAdmin(admin.ModelAdmin): 
   
       def formfield_for_foreignkey(self, db_field, request, **kwargs): 
        if db_field.name == "author":      
         try: 
          author_pk = int(request.GET.get('author', ''),) 
         except ValueError:   
          pass 
         else: 
          kwargs["initial"] = Author.objects.get(pk=author_pk) 
   
        return super(BookAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs) 
   
       def response_add(self, request, obj, post_url_continue=None): 
        return HttpResponseRedirect(reverse('admin:myapp_author_change', args=(obj.author.pk,)) 
        ) 
   
       def response_change(self, request, obj, post_url_continue=None): 
        return HttpResponseRedirect(reverse('admin:myapp_author_change', args=(obj.author.pk,)) 
        )