django - 在 MongoEngine + Django 中添加数据

Question

我使用的是django+mongoengine。

我正在按照官方教程学习，但我不知道如何在我的数据库中引入数据。

我不知道我是否必须使用 django 控制台、python 控制台或 mongodb

这是教程的链接:MongoengineTutorial

使用mongo我发现如下错误

(reb_env)root@marcproves:/REBORN/REBORN_PROJ# mongo
MongoDB shell version: 2.4.9
connecting to: test
Server has startup warnings: 
Tue Apr  1 05:37:35.300 [initandlisten] 
Tue Apr  1 05:37:35.300 [initandlisten] ** WARNING: You are running in OpenVZ. This is known to be broken!!!
Tue Apr  1 05:37:35.301 [initandlisten] 
> ross = User(email='ross@example.com', first_name='Ross', last_name='Lawley').save()
Tue Apr  1 06:22:38.046 ReferenceError: User is not defined
> show dbs
local   0.03125GB
reborn  0.203125GB
> use reborn
switched to db reborn
> ross = User(email='ross@example.com', first_name='Ross', last_name='Lawley').save()
Tue Apr  1 06:22:51.791 ReferenceError: User is not defined

我刚刚创建了一个应用程序并添加了教程中的以下代码:

  GNU nano 2.2.6                             File: models.py                                                                  

//from django.db import models
from mongoengine import *
# Create your models here.
class User(Document):
    email = StringField(required=True)
    first_name = StringField(max_length=50)
    last_name = StringField(max_length=50)

class Post(Document):
    title = StringField(max_length=120, required=True)
    author = ReferenceField(User, reverse_delete_rule=CASCADE)
    tags = ListField(StringField(max_length=30))
    comments = ListField(EmbeddedDocumentField(Comment))
    meta = {'allow_inheritance': True}

class TextPost(Post):
    content = StringField()

class ImagePost(Post):
    image_path = StringField()

class LinkPost(Post):
    link_url = StringField()

class Comment(EmbeddedDocument):
    content = StringField()
    name = StringField(max_length=120)

更新:在 django shell 中运行

(reb_env)root@marcproves:/REBORN/REBORN_PROJ# python manage.py shell
Python 2.7.3 (default, Sep 26 2013, 20:03:06) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from mongoengine import *
>>> connect('reborn')
MongoClient('localhost', 27017)
>>> ross = User(email='ross@example.com', first_name='Ross', last_name='Lawley').save()
Traceback (most recent call last):
  File "<console>", line 1, in <module>
NameError: name 'User' is not defined
>>>  

同样的错误，User is not defined，我该怎么办？

Answer 1

好吧，我终于解决了这个问题。

在模型中，我必须一如既往地声明数据库是怎样的......

(模型.py)

# Create your models here.
from mongoengine import *
class User(Document):
    email = StringField(required=True)
    first_name = StringField(max_length=50)
    last_name = StringField(max_length=50)
class Comment(EmbeddedDocument):
    content = StringField()
    name = StringField(max_length=120)


class Post(Document):
    title = StringField(max_length=120, required=True)
    author = ReferenceField(User)
    tags = ListField(StringField(max_length=30))
    comments = ListField(EmbeddedDocumentField(Comment))
    meta = {'allow_inheritance': True}

class TextPost(Post):
    content = StringField()

class ImagePost(Post):
    image_path = StringField()

class LinkPost(Post):
    link_url = StringField()

在 views.py(或 python 控制台)...

from django.shortcuts import render 
# Create your views here.
from django.http import HttpResponse  
from game.models import *  //Import the models 
from mongoengine import * //Import things like connect

def testview(request):  
    connect('reborn')//Connect to DB
    //Let's add some data!
    article = User(email = 'test@title.com',first_name = 'test content')
    article.save()
    return HttpResponse("SAVED")