Django Admin - 禁用特定模型实例的编辑链接

Question

我定义了以下模型：

class BankAccount(models.Model):
    iban = models.CharField(max_length=34)
    owner = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name='owner')

以及 admin.py 上的以下 ModelAdmin：

class BankAccountAdmin(admin.ModelAdmin):
    list_display = ('iban', 'owner',)

    def has_change_permission(self, request, obj=None):
        return obj is None or obj.owner == request.user

到目前为止，django admin 只允许用户编辑他们的银行账户，当用户没有更改权限时返回 403 Forbidden 错误。

问题是所有 BankAccount 实例的链接仍然显示。

知道如何在 BankAccount 管理视图中禁用这些特定实例的链接吗？

Answer 1

我终于在 admin.py 上实现了一个解决方法来解决它，如下所示。注释解释了添加的行。

from django.utils.html import format_html

class BankAccountAdmin(admin.ModelAdmin):
    list_display = ('iban_link', 'owner',)
    list_display_links = None  # The field displaying the link is given by iban_link()

    editable_objs = []  # This variable will store the instances that the logged in user can edit

    def has_change_permission(self, request, obj=None):
        return obj is None or obj.owner == request.user

    def iban_link(self, obj):
        # Shows the link only if obj is editable by the user. 
        if obj in self.editable_objs:
            return format_html("<a href='{id}'>{iban}</a>",
                               id=obj.id, iban=obj.iban,
                               )
        else:
            return format_html("{iban}",
                               id=obj.id, iban=obj.iban,
                               )

    # We make use of get_queryset method to fetch request.user and store the editable instances
    def get_queryset(self, request):
        # Stores all the BankAccount instances that the logged in user is owner of
        self.editable_objs = BankAccount.objects.filter(owner=request.user)
        return super(UserAdmin, self).get_queryset(request)

请注意，如果没有list_display_links = None 行，所有实例的链接仍会显示。这是因为默认行为会在第一列显示所有实例的链接。