我使用mongodb和mongoengine 0.8.6和烧瓶用于网络框架
当我将我的mongoengine更新为0.9.0时，我无法在数据库中获取旧文档但是当我创建一个新的Document时，我没有问题可以获得它！
提出的错误是：
raise FieldDoesNotExist(msg)
FieldDoesNotExist: The field 'notification_actions' does not exist on the document 'User'
当我删除上面提到的字段时（例如在这种情况下notification_actions），它引发了另一个field的错误，让我感到惊讶的是新的Document我创建具有相同的field s！
班级定义：
class User(Document):
stores = EmbeddedDocumentListField(UserStore)
password = StringField(max_length=255, required=True)
email = StringField(max_length=255, required=True)
forget_password_key = StringField()
mail_verify_key = StringField()
firstName = StringField(max_length=45)
lastName = StringField(max_length=45)
marital = StringField(max_length=1)
address = StringField()
state = StringField()
city = StringField()
postal = IntField()
websites = ListField(StringField(max_length=65))
sex = StringField(max_length=1)
interest = StringField()
birthday = DateTimeField()
skills = StringField()
phone = StringField()
cellphone = StringField()
fax = StringField()
avatar = StringField()
msg = IntField(default=0)
group = StringField()
created_at = DateTimeField(default=datetime.datetime.now, required=True)
我试图获得它的Document但是mongoengine会引发错误：
{
"_id" : ObjectId("55c74ba4e3615342fd0b541c"),
"_keywords" : [],
"address" : "",
"banks" : [
{
"id" : "55518df6123dbb06402f0e0b",
"bank_name" : "mellat",
"account_num" : "603799112344011",
"card_num" : "223333"
}
],
"categories" : [],
"cellphone" : "",
"city" : "13",
"created_at" : ISODate("2015-04-01T01:03:18.140Z"),
"deliveries" : [],
"delivery" : {
"courier" : true,
"post_custom_made" : true,
"post_leading" : true,
"free_for_price" : 0,
"area_support" : "",
"price_for_area_selected" : 0
},
"description" : "",
"domain" : "ehsanco",
"domains" : [
{
"domain" : "ehsanco.bab.ir",
"is_active" : true,
"can_delete" : false,
"is_default" : true
},
{
"domain" : "ielecom.org",
"is_active" : false,
"can_delete" : true,
"is_default" : false
}
],
"email" : "emahmoudi98@gmail.com",
"external_domains" : [
{
"domain" : "ielecom.org",
"is_active" : false,
"must_buy" : false
}
],
"fax" : "",
"inventories" : [
{
"store" : ObjectId("551b048e123dbb0524c04983")
}
],
"is_dealer" : false,
"logo" : "download",
"marketplace" : "bab.ir",
"menu" : [
ObjectId("55b60037123dbb4e200560f6")
],
"msg" : 0.0000000000000000,
"notification_actions" : [
{
"name" : "buy",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "comment",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "pay",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "contact",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "out_of_stock",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "new_user",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
}
],
"password" : "pbkdf2:sha1:1000$1bca0pNG$b3d7085bf5090057af6fa79e617a5830ac72793e",
"pay_way" : [],
"payment" : {
"zarinpal_is_active" : true,
"cart_to_card_is_active" : true,
"coordinatad_is_active" : true
},
"phone" : "",
"related_store" : [],
"state" : "8",
"store" : ObjectId("551b048e123dbb0524c04983"),
"store_name" : "ehsanco",
"stores" : null,
"theme" : ObjectId("55850cb7123dbb7c6e1590a6"),
"theme_history" : [
ObjectId("55094c6a123dbb2e1c280c0b"),
ObjectId("55094c6a123dbb2e1c280c0c"),
ObjectId("55850cb7123dbb7c6e1590a6")
],
"websites" : [],
"zarinpal" : {
"zarinpal_id" : "zp.118902",
"valet_id" : 1
}
}
以及我可以从mongoengine获取的Document：
{
"_id" : ObjectId("55c74ba4e3615342fd0b5425"),
"banks" : [],
"categories" : [],
"created_at" : ISODate("2015-07-01T08:55:43.052Z"),
"devices" : [],
"domains" : [
{
"domain" : "khallaghi.bab.ir",
"is_active" : true,
"can_delete" : false,
"is_default" : true
}
],
"email" : "mdkhallaghi@gmail.com",
"freeze" : false,
"inventories" : [
{
"store" : ObjectId("55936bc7123dbb512c534206")
}
],
"is_dealer" : false,
"keywords" : [],
"marketplace" : "bab.ir",
"menu" : [],
"msg" : 0.0000000000000000,
"notification_actions" : [
{
"name" : "comment",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "buy",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "new_user",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "pay",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "contact",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
},
{
"name" : "out_of_stack",
"has_email" : true,
"has_sms" : false,
"has_site_alert" : true
}
],
"ordering_freeze" : false,
"password" : "pbkdf2:sha1:1000$99sS9KCg$572b4c418fe0f7cd6b2d0e303f622353aae0a6a0",
"pay_way" : [],
"redirect_all_domain_to_default" : true,
"related_store" : [],
"store" : ObjectId("55936bc7123dbb512c534206"),
"store_name" : "khallaghi",
"stores" : null,
"tax" : 0.0000000000000000,
"theme" : ObjectId("55850cb7123dbb7c6e15909e"),
"theme_history" : [],
"websites" : []
}
我写的查询：
tmp = User.objects(email=email).count()
users = User.objects(
email=email
).first()
有趣的是第一个查询正常运行，但第二个查询引发错误
完整错误：
Traceback (most recent call last):
File "/usr/lib/python2.7/logging/__init__.py", line 859, in emit
msg = self.format(record)
File "/usr/lib/python2.7/logging/__init__.py", line 732, in format
return fmt.format(record)
File "/usr/lib/python2.7/logging/__init__.py", line 471, in format
record.message = record.getMessage()
File "/usr/lib/python2.7/logging/__init__.py", line 331, in getMessage
msg = str(self.msg)
File "/home/mohammad/shopify/env/local/lib/python2.7/site-packages/mongoengine/queryset/queryset.py", line 58, in __repr__
self._populate_cache()
File "/home/mohammad/shopify/env/local/lib/python2.7/site-packages/mongoengine/queryset/queryset.py", line 93, in _populate_cache
self._result_cache.append(self.next())
File "/home/mohammad/shopify/env/local/lib/python2.7/site-packages/mongoengine/queryset/base.py", line 1359, in next
_auto_dereference=self._auto_dereference, only_fields=self.only_fields)
File "/home/mohammad/shopify/env/local/lib/python2.7/site-packages/mongoengine/base/document.py", line 709, in _from_son
obj = cls(__auto_convert=False, _created=created, __only_fields=only_fields, **data)
File "/home/mohammad/shopify/env/local/lib/python2.7/site-packages/mongoengine/base/document.py", line 81, in __init__
raise FieldDoesNotExist(msg)
FieldDoesNotExist: The field 'domain' does not exist on the document 'User'
Logged from file extended_logging.py, line 113
127.0.0.1 - - [09/Sep/2015 15:24:53] "POST /store/login/ HTTP/1.1" 500 -
Traceback (most recent call last):
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
return self.wsgi_app(environ, start_response)
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
reraise(exc_type, exc_value, tb)
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
response = self.full_dispatch_request()
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
rv = self.dispatch_request()
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/home/mohammad/shopify/project/utils/auth.py", line 53, in decorated_function
return f(*args, **kwargs)
File "/home/mohammad/shopify/project/utils/template.py", line 16, in decorated_function
return f(*args, **kwargs)
File "/home/mohammad/shopify/project/apps/store/views/auth.py", line 52, in login
user = users[0]
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/mongoengine/queryset/base.py", line 161, in __getitem__
_auto_dereference=self._auto_dereference, only_fields=self.only_fields)
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/mongoengine/base/document.py", line 709, in _from_son
obj = cls(__auto_convert=False, _created=created, __only_fields=only_fields, **data)
File "/home/mohammad/shopify/env/lib/python2.7/site-packages/mongoengine/base/document.py", line 81, in __init__
raise FieldDoesNotExist(msg)
FieldDoesNotExist: The field 'domain' does not exist on the document 'User'
错误的总结是当我调用first()函数时，错误会引发错误并且表示无法在domain集合中找到User字段