Django多对多内联 - 如何显示通过模型引用的字段？ [英] Django Many to Many Inline - how to show fields referenced by through model?

问题描述

我正在django Admin中自定义和内嵌多个内联，但是我无法显示底层模型的字段。

I'm trying to customize and many to many inline in the django Admin, but I'm not able to display the fields of the underlying models.

这里是一个简化的例子。也许你可以告诉我如何引用它们？

Here's a simplified example. Maybe you can tell me how to reference them?

这是我的模型：

class Clown(models.Model):
    name = models.CharField(max_length=255)
    def edit_link(self):
        return ...

class Circus(models.Model):
    clowns = models.ManyToManyField(Clown, blank=True, through='WorkedAt')
    name = models.CharField(max_length=255)

class WorkedAt(models.Model):
    clown = models.ForeignKey(Clown)
    circus = models.ForeignKey(Circus)

和我的管理员：

class ClownInline(admin.TabularInline):
    model = WorkedAt
    fields = ['clown__name','clown__edit_link']


class CircusAdmin(admin.ModelAdmin):
    inlines = [
        ClownInline,
    ]
    exclude = ('clowns',)

但是我收到这个错误：

Unknown field(s) (clown__name) specified for WorkedAt

（我在Django 1.6）

(I'm on Django 1.6)

更新：
为什么这不工作。 （添加计算字段到模型。）

Update: Why won't this work either. (Added calculated field to through model.)

class Clown(models.Model):
    name = models.CharField(max_length=255)
    def edit_link(self):
        return ...

class Circus(models.Model):
    clowns = models.ManyToManyField(Clown, blank=True, through='WorkedAt')
    name = models.CharField(max_length=255)

class WorkedAt(models.Model):
    clown = models.ForeignKey(Clown)
    circus = models.ForeignKey(Circus)
    @property
    def edit_link(self):
        return self.clown.edit_link()

和我的管理员：

class ClownInline(admin.TabularInline):
    model = WorkedAt
    fields = ['edit_link']


class CircusAdmin(admin.ModelAdmin):
    inlines = [
        ClownInline,
    ]
    exclude = ('clowns',)

推荐答案

尝试这个。希望它解决你的问题

Try this. Hope it solves your problem

class ClownInline(admin.TabularInline):
    model = WorkedAt
    readonly_fields = ['clown_name','clown_edit_link']
    def clown_name(self, instance):
        return instance.clown.name
    clown_name.short_description = 'clow name'

    def clown_edit_link(self, instance):
        url = reverse("admin:%s_%s_change" % (instance.clown._meta.app_label, instance.clown._meta.module_name), args=(instance.clown.pk,))
        return '<a href="%s">%s</a>' % (url, instance.clown.name)
    clown_edit_link.allow_tags = True


class CircusAdmin(admin.ModelAdmin):
    inlines = [
        ClownInline,
    ]
    exclude = ('clowns',)

这篇关于Django多对多内联 - 如何显示通过模型引用的字段？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！