PonyORM: Mapping is not generated for entity ‘User’

user_6712047 0
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I’m trying to learn and build small app with PonyOrm and Flask. For that I’ve copied example app from Pony’s GitHub. But I still get the same error:

pony.orm.core.ERDiagramError: Mapping is not generated for entity 'User'

I’ve been looking for answers on Google and in Pony documentation, to no avail.

ponyorm flask python
1 Answers

Add this line after the creation of the entity and before you tries to map:

db.generate_mapping(create_tables=True) # create tables

Worked for me.

user_120374760
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