InvalidDocument：无法对对象进行编码：< User：User object> ReferenceField与MongoEngine [英] InvalidDocument: Cannot encode object: <User: User object> ReferenceField with MongoEngine

问题描述

这就是我的模型看起来的样子（UserMixin，db.Document）：
first_name = db.StringField（max_length = 255，

pre $必须= True）
last_name = db.StringField（max_length = 255，required = True）
email = db.StringField（max_length = 255）
$ b $ class Post（db.Document ）：
description = db.StringField（max_length = 255，required = True）
inserted_at = db.DateTimeField（default = datetime.datetime.now，required = True）
tags = db。 ListField（db.EmbeddedDocumentField（'Tag'））
comments = db.ListField（db.EmbeddedDocumentField（'Comment'））
user = db.ReferenceField（'User'）
<

$ b $ p $这是我如何创建Post对象：

$ pre $ user = User.objects.filter（id = current_user.id）.first（）

post = Post（
description = request.json [description]，
user = user
）


<我也试过：

pre $ user = current_user._get_current_object（）


但是我不断收到：

  InvalidDocument：无法编码object：< User：User object> 
  

有什么想法？

Thanks！

解决方案

我认为你正在使用的db模块存在一些问题。它真的是mongoengine模块吗？因为你的代码工作正常，所以如果我使用

$ $ p $ $ $ $ $ $ $导入mongoengine作为db

I've been working with Flask and MongoEngine, and I am having trouble when trying to save an object because of a ReferenceField.

This is what my model looks like:

class User(UserMixin, db.Document):
    first_name = db.StringField(max_length=255, required=True)
    last_name = db.StringField(max_length=255, required=True)
    email = db.StringField(max_length=255)

class Post(db.Document):
    description = db.StringField(max_length=255, required=True)
    inserted_at = db.DateTimeField(default=datetime.datetime.now, required=True)
    tags = db.ListField(db.EmbeddedDocumentField('Tag'))
    comments = db.ListField(db.EmbeddedDocumentField('Comment'))
    user = db.ReferenceField('User')

This is how I create the Post object:

    user = User.objects.filter(id=current_user.id).first()

    post = Post(
        description = request.json["description"],
        user = user
    )

I have also tried:

user = current_user._get_current_object()

But I keep getting:

InvalidDocument: Cannot encode object: <User: User object>

Any ideas on what's going on?

Thanks!

解决方案

I think there is some issue with the db module you are using. Is it really the mongoengine module. Because your code works fine, if I use

import mongoengine as db

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