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由於MongoEngine says in documentation:爲什麼在MongoEngine中排除（）不會排除所有字段？
只（*域）負載只有這個文件的域的子集。
後= BlogPost.objects（...）只（ '標題'， 'author.name'）
現在我對我自己的用戶採集運行下同：
user = User.objects(__raw__=condition).only('status').get()
但是，當我打印輸出（print user.to_json()）它給像下面的結果：
{"_id": {"$oid": "59ba3c7428999b08223dc4aa"}, "cover": "", "avatar": "", "dob": {"$date": 1505347200000}, "created_at": {"$date": 1505384574064}, "updated_at": {"$date": 1505384574064}, "bio": "", "location": "", "account_type": "regular", "status": "inactive", "phone": ""}
我不認爲我已經在這裏錯過了一些東西。
現在我用排除列入黑名單的某些字段：
user = User.objects(__raw__=condition).exclude('status').exclude('username').exclude('bio').exclude('email').get()
輸出是：
{"_id": {"$oid": "59ba3c7428999b08223dc4aa"}, "fullname": "Mu Fullname", "password": "$pbkdf2-sha256$16366$y9lbq/Ueo5QSohSi1FrLmQ$YOLu.KzmLiDhS6BVh4cTPg7xFpYLZ/2l478jnROj0ok", "cover": "", "avatar": "", "dob": {"$date": 1505347200000}, "created_at": {"$date": 1505377384359}, "updated_at": {"$date": 1505377384359}, "bio": "", "location": "", "verification": {"email": false, "celebrity": false, "phone": false}, "account_type": "regular", "status": "inactive", "phone": ""}
username和email被排除，但不status和bio。
我的用戶模型爲：
class Verification(EmbeddedDocument):
email = BooleanField(default=False, allow_blank=True, allow_null=True)
celebrity = BooleanField(default=False, allow_blank=True, allow_null=True)
phone = BooleanField(default=False, allow_blank=True, allow_null=True)
class User(Document):
email = EmailField(required=True, max_length=200, unique=True)
# regex '^\w+$' equals [a-zA-Z_]
username = StringField(regex='^\w+$', required=True, max_length=15, min_length=3, unique=True)
fullname = StringField(required=True, max_length=20)
password = StringField(required=True)
cover = StringField(default='')
avatar = StringField(default='')
dob = DateTimeField(default='')
created_at = DateTimeField(default=datetime.datetime.utcnow())
updated_at = DateTimeField(default=datetime.datetime.utcnow())
bio = StringField(default='')
location = StringField(default='')
verification = EmbeddedDocumentField(Verification, required=True)
account_type = StringField(required=True, default='regular', choices=('page', 'regular'))
status = StringField(required=True, default='inactive', choices=('inactive', 'active', 'block'))
phone = StringField(regex='^$|^[0-9()\\-\\.\\s]+$', default='')
