Django - 管理员：在没有 inlineForm 的情况下编辑子模型

发布于 2024-12-14 11:11:52 字数 974 浏览 1 评论 0原文

标准示例：

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 ...

我想从作者更改页面编辑书籍。
我尝试使用 InlineModelAdmin 但自从 Book 字段较多，不易编辑。
这就是为什么我尝试在作者/更改模板上添加指向孩子的链接。

<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>

但有几个问题

我如何在 Book 表单中预填充相关的 Author id
如何让保存按钮返回到相关 作者
我走在正确的道路上吗？

原文

Standard example:

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 ...

I'd like to edit the Books from the Author change page.
I tried with InlineModelAdmin but since Book has many fields, it's not easy to edit.
That's why I tried to put links towards the children on the author/change template.

<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>

But there are several questions

How can I prepopulate the related Author id in the Book form
How can I make the Save button to go back to the related Author
Am I on right track ?

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梦晓ヶ微光ヅ倾城 2024-12-21 11:11:52

是的，当然。

将 author 主键作为 GET 参数附加到您的网址：
<前><代码>
- 添加图书
- 编辑{{ book }}

修改图书相应的 ModealAdmin，覆盖 response_add() 和response_change()。请注意，我们还覆盖 formfield_for_forein_key 以便预先填充 author 字段：

from django.http import HttpResponseRedirect
从 django.core.urlresolvers 导入反向

类 BookAdmin(admin.ModelAdmin):

    def formfield_for_foreignkey(self, db_field, request, **kwargs):
        如果 db_field.name == "作者":                    
            尝试：
                author_pk = int(request.GET.get('作者', ''),) 
            除了值错误：           
                经过
            别的：
                kwargs["初始"] = Author.objects.get(pk=author_pk)

        返回 super(BookAdmin, self).formfield_for_foreignkey(db_field, request, **kwargs)

    def response_add(self, request, obj, post_url_continue=None):
        返回 HttpResponseRedirect(reverse('admin:myapp_author_change', args=(obj.author.pk,))
        ）

    def response_change(self, request, obj, post_url_continue=None):
        返回 HttpResponseRedirect(reverse('admin:myapp_author_change', args=(obj.author.pk,))
        ）

Yes, sure.

Append author primary key as GET parameter to your url:

<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>

Modify the corresponding ModealAdmin for book, override response_add() and response_change(). Note that we also override formfield_for_forein_key in order to pre-populate author field:

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,))
        )

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