How to generate a model for a mongoengine Document from an already existing collection
来源： https://stackoverflow.com/questions/62979525/how-to-generate-a-model-for-a-mongoengine-document-from-an-already-existing-coll
mongoengine
creating mongoengine class dynamicly from json schema
问题 i'm looking for a way to take my json schema and dynamically create a mongoengine class at runtime. for example: the mongoengine class written below class user(Document): _id = StringField(required=False) # mongodb id name = StringField(required=True) # user name email= StringField(required=False,regex="^[a-zA-Z0-9]*@mydomain.com$") # user email will be the same as the dynamically generated at runtime class generated from this schema { "type":"object", "properties":{ "_id" : {"type":"string"}
creating mongoengine class dynamicly from json schema
问题 i'm looking for a way to take my json schema and dynamically create a mongoengine class at runtime. for example: the mongoengine class written below class user(Document): _id = StringField(required=False) # mongodb id name = StringField(required=True) # user name email= StringField(required=False,regex="^[a-zA-Z0-9]*@mydomain.com$") # user email will be the same as the dynamically generated at runtime class generated from this schema { "type":"object", "properties":{ "_id" : {"type":"string"}
Use MongoEngine and PyMongo together
问题 I want to use MongoEngine for my next project. Now I'm wondering whether I could also use PyMongo directly in the same project. Just for the case that I need something very special that is not supported directly via mongoengine. Are there any doubts that this would work, or that I should not do that!? 回答1: Author of MongoEngine here - MongoEngine is built upon pymongo so of course you can drop into pymongo - or use raw pymongo in your code! There are some document helpers that allow you to
Use MongoEngine and PyMongo together
问题 I want to use MongoEngine for my next project. Now I'm wondering whether I could also use PyMongo directly in the same project. Just for the case that I need something very special that is not supported directly via mongoengine. Are there any doubts that this would work, or that I should not do that!? 回答1: Author of MongoEngine here - MongoEngine is built upon pymongo so of course you can drop into pymongo - or use raw pymongo in your code! There are some document helpers that allow you to
Constructing queries with MongoEngine and Q throws InvalidQueryError
问题 I am trying to construct a simple or query using MongoEngine and the django.db.models.Q class. My code (run from ./manage.py shell ) is: from db.models import User from django.db.models import Q User.objects.filter(Q(username='foo') | Q(email='bar')) My models.py is just from mongoengine import * class User(Document): username = StringField() email = StringField() I have tried several different versions, and always get the following error: Traceback (most recent call last): File "<console>",
Django操作mongodb
我的项目中已经使用了mysql，现在设计了两个表想要采用mongodb数据库进行存储。 步骤如下（mongodb安装启动在https://www.cnblogs.com/huanhuaqingfeng/p/11188024.html中查看） 1，安装mongoengine pip install mongoengine 在django中，mongoengine是django与mongodb数据库的连接器 2， 修改settings.py DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME': 'builddatabase', 'USER': 'root', 'PASSWORD': 'likeshe', 'HOST': '127.0.0.1', 'PORT': '3306', }, 'db1': { 'ENGINE':None, } } import mongoengine #导入mongoengine conn = mongoengine.connect("Print_Analysis") ##Print_Analysis ，我的mongodb数据库的名字 3，在我的应用Print_Analysis的models.py 中添加表类 import mongoengine class log
MongoDB之python简单交互(三)
python连接mongodb有多种orm，主流的有pymongo和mongoengine。 pymongo 安装相关模块 pip install pymongo pymongo操作 主要对象 MongoClient对象：用于与MongoDB服务器建立连接 DataBase对象：对应着MongoDB中的数据库 Collection对象：对应着MongoDB中的集合 Cursor对象：查询方法find()返回的对象，用于进行多行数据的遍历 主要方法 insert_one：加入一条文档对象 insert_many：加入多条文档对象 find_one：查找一条文档对象 find：查找多条文档对象 update_one：更新一条文档对象 update_many：更新多条文档对象 delete_one：删除一条文档对象 delete_many：删除多条文档对象 交互实例 # test.py from pymongo import * def get_col(): """获取一个集合对象""" try: # 连接mongodb，connect=False参数加上 client = MongoClient(host='192.168.1.21',port=27017, username="admin", password="123", connect=False) # client =
Django 通过 mongoengine 连接 MongoDB 进而使用orm进行CRUD
一. 在python脚本中， 我们通常可以使用pymongo模块实现与mongodb数据库的交互， 但是在使用Django框架进行定制开发的web server 项目中， 仍然使用pymongo模块的话， 显然是过于“原始”，这时可以考虑使用 mongoengine 模块， 通过这个模块， 可以封装数据模型， 然后以orm的形式进行crud，实现对mongodb数据库的操作。 这里仅对如何快速的使用这个模块做一个简单说明。 二. 安装 mongoengine pip install mongoengine 三. django 配置文件中配置连接mongodb数据库 import mongoengine # 创建与mongodb数据库的连接 MONGO_CONN = mongoengine.connect( db = " lowman " , # 需要进行操作的数据库名称 alias= ' default ' , # 必须定义一个default数据库 host= " 192.168.3.69 " , port =27017 , username = " 渣男不但丑 " , password = " 28269 " , authentication_source = " admin " , # 进行身份认证的数据库，通常这个数据库为admin“ ) 四. models.py
Update nested field if a path to it isn't constant
问题 I'm working on Django which uses MongoDB. One of collections has the following structure: { "inspectionType" : { "id" : "59a79e44d12b52042104c1e8", "name" : "Example Name", "inspMngrsRole" : [ { "id" : "55937af6f3de6c004bc42862", "type" : "inspectorManager", "is_secret_shoper" : false } ], "scopes" : { "56fcf6736389b9007a114b10" : { "_cls" : "SomeClass", "id" : "56fcf6736389b9007a114b10", "name" : "Example Name", "category" : "Example Category" }, } } } I need to update field "_cls" (