如何在Django ModelAdmin字段集中调用模型方法？ [英] How do I call a model method in django ModelAdmin fieldsets?

问题描述

当数据库中已经存在数据时，我想在管理表单上显示嵌入式地图。我有以下代码：

I want to display an embedded map on an admin form when data already exists in the db. I have the following code:

models.py

models.py

class Address(models.Model):
    address = models.CharField()

    def address_2_html(self):
        if self.address:
            # Return html for an embedded map using the entered address.
            return embedded_map_html
        else:
            return ''
    address_2_html.allow_tags = True

admin.py

class AddressAdmin(admin.ModelAdmin):
    fieldsets = [(label, {'fields': ['address','address_2_html']}),]

此不起作用。我收到错误消息：

This doesn't work. I get an error:

'AddressAdmin.fieldsets[1][1]['fields']' refers to field 'address_2_html' that is missing from the form.

我尝试的另一件事是对字段集使用说明选项，但是，地址_2_html在AddressAdmin范围内不可访问。我确实成功地使用了'description'嵌入了一个静态地图，虽然很酷，但还不够酷。

Another thing I tried was using the 'description' option for 'fieldsets', however, 'address_2_html' is not accessible within the scope of AddressAdmin. I did succeed at embedding a static map using 'description' which was cool but not cool enough.

推荐答案

）：

class AddressAdmin(admin.ModelAdmin):
    fieldsets = [(label, {'fields': ['address','address_2_html']}),]
    readonly_fields = ['address_2_html']

    def address_2_html(self, obj):
        return obj.address_2_html()
    address_2_html.allow_tags = True
    address_2_html.short_description = 'Address display'

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