Question

当我有一个相关的资源时，我想列出外键，而不是该资源的URL。除了脱水之外怎么可能呢？

Answer 1

我不确定没有脱水的可能性。我通常有实用函数来处理转换外键和多对多关系的脱水，如下所示：

#api_utils.py
def many_to_many_to_ids(bundle, field_name):
    field_ids = getattr(bundle.obj, field_name).values_list('id', flat=True)
    field_ids = map(int, field_ids)
    return field_ids

def foreign_key_to_id(bundle, field_name):
    field = getattr(bundle.obj, field_name)
    field_id = getattr(field, 'id', None)
    return field_id

并将它们应用于以下字段：

#api.py

from functools import partial

class CompanyResource(CommonModelResource):
    categories = fields.ManyToManyField(CompanyCategoryResource, 'categories')

    class Meta(CommonModelResource.Meta):
        queryset = Company.objects.all()

    dehydrate_categories = partial(many_to_many_to_ids, field_name='categories')


class HotDealResource(CommonModelResource):
    company = fields.ForeignKey(CompanyResource, 'company')

    class Meta(CommonModelResource.Meta):
        queryset = HotDeal.objects.all()

    dehydrate_company = partial(foreign_key_to_id, field_name='company')

tastypie - 列出相关资源键而不是URL

1 个答案: