MongoEngine / MongoEngine/mongoengine

Reloading documents is not working on classes which has references for abstract classes

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Dominant language
Python
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Description

Reloading documents is not working on classes which has references for abstract classes.

import mongoengine as me


me.connect('test')

class Place(me.Document):
    meta = {'abstract': True}

class Inventory(Place):
    pass

class Item(Place):
    place = me.ReferenceField(Place)


inventory = Inventory().save()

item = Item(place=inventory).save()

item.reload()

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the reproduction in the issue and focus on the item.reload() entry point with a ReferenceField pointing to the abstract Place class. Trace how the reference is resolved during reload, then add a regression test for this example; done means reloading item succeeds and preserves its referenced Inventory document.

Written by the indexing model from the issue text.

Assessment

Tech stack
mongodb, python
Domain
database
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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