Flask/Pymongo Where/How do I apply validation? - python-3.x

Question

This does not seem to apply validation to the collection. No exceptions are thrown and documents can have attributes of the wrong type. Perhaps I am doing it in the wrong section of the codebase? Right now it is in __init__.py
__init__.py
db = database(client, settings.mongo_db_name)
from api.models import Company
validation_level = 'strict'
if 'companies' not in db.collection_names():
db.create_collection('companies', validator=Company.validator, validationLevel=validation_level)
else:
db.command({
'collMod': 'companies',
'validator': Company.validator,
'validationLevel': validation_level,
})
Company Model:
from api import db
class Company(Model):
collection = db.companies
validator = {
'$jsonSchema': {
'bsonType': 'object',
'required': ['name', 'description'],
'properties': {
'logo': {
'bsonType': 'string',
},
'name': {
'bsonType': 'string',
'description': 'name of company is required',
'minLength': 4,
},
'description': {
'bsonType': 'string',
'description': 'description of company is required',
'minLength': 4,
},
'website': {
'bsonType': 'string',
},
'request_delete': {
'bsonType': 'bool',
},
'deleted': {
'bsonType': 'bool',
},
}
}
}
As discussed here, I also tried this without success:
db.command(OrderedDict([
('collMod', 'companies'),
('validator', Company.validator),
('validationLevel', validation_level),
]))
If this were successful, would I see validation rules when running the following command?
pprint(db.command('collstats', 'companies'))
Update
I added OrderedDict to both command arguments and the validator. This works... when I run specific tests. It does not work with
python -m unittest discover
I'm using Python 3.6.8, PyMongo 3.8.0, and MongoDB 3.6.3

Answer 1

Usually, it's better to validate a document BEFORE inserting it to the database. In this case, you'll omit errors in schema