我需要以某種方式將用戶信息ForeignKeyWidget從資源類傳遞到類，我在其中創建foreignKey對象：class CompanyWidget(ForeignKeyWidget): def clean(self, value, row=None, *args, **kwargs): print(self.user, file=sys.stderr) if not value: return None else: obj, _ = Company.objects.get_or_create( name=value, created_by='I NEED USER INFORMATION HERE SOMEHOW', ) return obj做這個的最好方式是什么？我嘗試自己解決這個問題，并且非常接近，但無法解決最后一塊難題。您覆蓋__init__ 資源中的類并在那里獲取用戶信息。然后，我不知道如何將這些self.user信息傳遞到類變量中company。這是代碼：class ContactResource(resources.ModelResource): def __init__(self, *args, **kwargs): self.user = kwargs.pop('user', None) super(ContactResource, self).__init__(*args, **kwargs) company = fields.Field( column_name='company', attribute='company', widget=CompanyWidget(model=Company, field='name', user='I NEED TO PASS USER HERE FROM __INIT__')) def after_import_instance(self, instance, new, **kwargs): instance.created_by = kwargs['user']如果我以某種方式設法將用戶信息傳遞到變量中**kwargs，company那么我可以通過覆蓋ForeignKeyWidget的__init__類來在下游使用它：class CompanyWidget(ForeignKeyWidget): def __init__(self, model, field='pk', *args, **kwargs): self.model = model self.field = field self.user = kwargs.pop('user', None) super(CompanyWidget, self).__init__(model, *args, **kwargs) def clean(self, value, row=None, *args, **kwargs): print(self.user, file=sys.stderr) if not value: return None else: obj, _ = Company.objects.get_or_create( name=value, created_by=self.user, ) return obj任何幫助將不勝感激，我花了很長時間才到達這里，我覺得我真的很接近。先感謝您。
1 回答
牧羊人nacy
TA貢獻1862條經驗 獲得超7個贊
事實證明，完全不使用ForeignKeyWidget 來實現這一點更容易。如果您有多個不唯一但具有相同名稱的外鍵（在我的例子中，由不同用戶創建相同的公司名稱），則可以通過以下方式解決問題：
類 ContactResource(resources.ModelResource):
def __init__(self, *args, **kwargs):
self.user = kwargs.pop('user', None)
super(ContactResource, self).__init__(*args, **kwargs)
company = fields.Field(column_name='company')
class Meta:
model = Contact
skip_unchanged = True
report_skipped = True
exclude =('is_active', 'created_by')
export_order = ('id','first_name','last_name','email','phone','address','description','company','created_on','website','job_title','birthday')
def after_import_instance(self, instance, new, **kwargs):
instance.created_by = self.user # kwargs['user']
def import_field(self, field, obj, data):
field_name = self.get_field_name(field)
method = getattr(self, 'clean_%s' % field_name, None)
if method is not None:
obj = method(field, obj, data)
super(ContactResource, self).import_field(field, obj, data)
def clean_company(self, field, obj, data):
name = data[field.column_name]
company, created = Company.objects.get_or_create(name=name, created_by=self.user)
obj.company = company
return obj
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