mongoengine

问题 I would like to store dynamic fields to the document, but each document can have different fields. for eg: Class SampleDoc(DynamicDocument): xyz = StringField() df = "field1" a = SampleDoc() a.df = "testing" a.save() If i run the above program, the mongodb document looks like the following. { "_id" : ObjectId("53905681e5ba5b3bfd1f5242"), "_cls" : "DataPoint", "df" : "testing" } but what i want is that the field name should be "field1" instead of "df" like this.. { "_id" : ObjectId(

问题 I have a small Flask app which uses MongoEngine. my project structure: /myproject -application.py -config.py /my_app -models.py -views.py my application.py: #!/usr/bin/env python from flask.ext.mongoengine import MongoEngine from config import app import os app.debug = True # get config settings if __name__ == '__main__': app.config.from_object('config') else: app.config.from_object('heroku_config') # wrap app in mongengine db = MongoEngine(app) if __name__ == '__main__': # Bind to PORT if

问题 I have a Flask app that uses mongoengine and running on Heroku, init I use the bson package and after I updateded it from 0.5.6 to 0.5.7 I started getting the following error message: [2018-11-23 05:56:43 +0000] [39] [INFO] Worker exiting (pid: 39) [2018-11-23 05:56:43 +0000] [40] [ERROR] Exception in worker process Traceback (most recent call last): File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker worker.init_process() File "/app/.heroku

问题 I have a project in Django, and I'm using mongoengine to save images into a Mongo database using GridFSStorage. All ok so far, but the problem is... when trying to retrieve the images via http request, with a REST API made with django-tastypie-mongoengine, I get back a json object like this: {"file": "<GridFSProxy: 516ed7cf56ba7d01eb09f522>", "id": "516ed7cf56ba7d01eb09f524", "resource_uri": "/api/v1/pic/516ed7cf56ba7d01eb09f524/"} Does anybody know how could I get the file from GridFS via

问题 I've found some similar questions on StackOverflow, but nothing that addresses what I'm looking for, so any help would be appreciated. My models: class BlogPost(EmbeddedDocument): title = StringField(required=True) blog_url = StringField(required=True, unique=True) content = StringField() turned_into_bitly_link = BooleanField(default=False) class Person(Document): name = StringField blog_posts = ListField(EmbeddedDocumentField(BlogPost), default=list) For each blogpost.blog_url, I query the

问题 I have the following classes class ParentDocument(Document): . . . class Child1Document(ParentDocument): . . . class Child2Document(ParentDocument): . . . Now let's say that I have a document of type Child1Document. Is it possible to clone it to a new document of type Child2Document? I have tried to do: doc1 = Child1Document() doc1.attr1 = foo doc1.save() doc2 = Child2Document() doc2 = doc1 but this converts doc2 to a Child1Document type. Is there a way to copy all the contents of doc1 to

问题 I spent ages trying to find a simple example where MongoEngine was being used and a connection was being closed. Finally figured it out and posting my code. 回答1: I know this is an old question, but if anyone else is searching I figured I'd give an alternate answer. close() does not actually remove the connection from MongoEngine's connection list. This causes problems when trying to connect to a different database later on. To solve this I used mongoengine.connection.disconnect (even though

问题 I'm pretty new to MongoDB and I'm experiencing it with mongoengine. Given this 'User' model where 'bets' is an embedded document list which each element contains a reference to a 'match' document, { "_id" : ObjectId("53df77cef4c9610f28cbff14"), "name" : "Test", "admin" : false, "bets" : [ { "match" : ObjectId("53e1511df4c9610bf52f5b7a"), "expectedResult" : "1" } ] } how can I get 'bets' elements, passed to query the matchId? I tried to do User.objects.filter(bets__match={'match._id':match.id}

问题 OK.. i am starting a project in django 1.4 and i want MongoDB as my backend. after a half a day of google search, i figured out that mongoengine is a best option(as it is an active project and provides a django like orm) Now the problem is 1. I cant find any good step-by-step setup guide to integrate mongoengine with a django project. I understand, using mongoengine means that i am replacing django orm and there is no need to do syncdb. now this project have a multi-tenant architecture (*

问题 In MongoEngine, when deleting an EmbeddedDocument from a ListField which includes a FileField, the referenced file does not get deleted. Currently, I have solved the issue by looping over the whole list field. for embdoc in doc.embdocs: if embdoc.filtered == value: embdoc.dfile.delete() doc.update(pull__embdocs={'filtered': value}) I was wondering if there was a better way to do this. 回答1: By default, MongoDB doesn’t check the integrity of your data, so deleting documents that other documents