from peewee import IntegrityError, Model as BaseModel class Model(BaseModel): """ Common Model class that fix create_or_get method with using CompositeKey. https://stackoverflow.com/questions/35167628/peewee-create-or-get-error-in-model-with-compositekey """ @classmethod def create_or_get(cls, **kwargs): try: with cls._meta.database.atomic(): return cls.create(**kwargs), True except IntegrityError: query = [] for field_name, value in kwargs.items(): field = getattr(cls, field_name) field_is_primary_key = ( field.name in cls._meta.primary_key.field_names if cls._meta.composite_key else field.primary_key ) if field.unique or field_is_primary_key: query.append(field == value) return cls.get(*query), False