如何将 Django 模型上的属性（虚拟字段）公开为 TastyPie ModelResource 中的字段

发布于 2024-12-29 21:30:29 字数 899 浏览 1 评论 0原文

我在 Django 模型中有一个属性，我想通过 TastyPie ModelResource 公开该属性。

我的模型是

class UserProfile(models.Model):
    _genderChoices = ((u"M", u"Male"), (u"F", u"Female"))

    user = Models.OneToOneField(User, editable=False)
    gender = models.CharField(max_length=2, choices = _genderChoices)

    def _get_full_name(self):
        return "%s %s" % (self.user.first_name, self.user.last_name)

    fullName = property(_get_full_name)

我的 ModelResource 是

class UserProfileResource(ModelResource):
    class Meta:
        queryset = models.UserProfile.objects.all()
        authorization = DjangoAuthorization()
        fields = ['gender', 'fullName']

但是我目前从 tastypie api 中得到的只是：

{
    gender: 'female',
    resource_uri: "/api/v1/userprofile/55/"
}

我尝试使用 ModelResource 中的 fields 属性，但这没有帮助。很想了解这里发生了什么。

原文

I have a property in a Django Model that I'd like to expose via a TastyPie ModelResource.

My Model is

class UserProfile(models.Model):
    _genderChoices = ((u"M", u"Male"), (u"F", u"Female"))

    user = Models.OneToOneField(User, editable=False)
    gender = models.CharField(max_length=2, choices = _genderChoices)

    def _get_full_name(self):
        return "%s %s" % (self.user.first_name, self.user.last_name)

    fullName = property(_get_full_name)

My ModelResource is

class UserProfileResource(ModelResource):
    class Meta:
        queryset = models.UserProfile.objects.all()
        authorization = DjangoAuthorization()
        fields = ['gender', 'fullName']

However all I'm currently getting out of the tastypie api is:

{
    gender: 'female',
    resource_uri: "/api/v1/userprofile/55/"
}

I have tried playing with the fields property in the ModelResource, but that hasn't helped. Would love to understand what is going on here.

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从此见与不见 2025-01-05 21:30:29

您应该能够将其定义为字段尝试：

class UserProfileResource(ModelResource):
    fullname = fields.CharField(attribute='_get_full_name', readonly=True)
    class Meta:
        queryset = models.UserProfile.objects.all()
        authorization = DjangoAuthorization()
        fields = ['gender',]

编辑

您还必须在 CharField 上添加：set readonly=True，否则 TastyPie 将尝试在插入或更新时设置其值。

You should be able to define it as a field try:

class UserProfileResource(ModelResource):
    fullname = fields.CharField(attribute='_get_full_name', readonly=True)
    class Meta:
        queryset = models.UserProfile.objects.all()
        authorization = DjangoAuthorization()
        fields = ['gender',]

Edit

You also have to include: set readonly=True on your CharField, or TastyPie will try to set its value on insertion or update.

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枯叶蝶 2025-01-05 21:30:29

脱水的完整示例：

class UserResource(ModelResource):
    fullname = fields.CharField(readonly=True)

    class Meta:
        queryset = auth_models.User.objects.all()
        resource_name = 'user'

    def dehydrate_fullname(self, bundle):
        return u"{first_name} {last_name}".format(
            first_name=bundle.obj.first_name, last_name=bundle.obj.last_name)

A full example with dehydrate:

class UserResource(ModelResource):
    fullname = fields.CharField(readonly=True)

    class Meta:
        queryset = auth_models.User.objects.all()
        resource_name = 'user'

    def dehydrate_fullname(self, bundle):
        return u"{first_name} {last_name}".format(
            first_name=bundle.obj.first_name, last_name=bundle.obj.last_name)

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