AttributeError when giving a column name in the model

[ghost]

There's my model:

class Document(BaseModel):
    __tablename__ = 'dcm_documents'
    __searchable__ = ['title', 'description', 'document']

    id = db.Column('dcm_id', db.Integer, primary_key=True)
    title = db.Column('dcm_title', db.String, unique=True)
    description = db.Column('dcm_description', db.String)

This will trigger an AttributeError because Flask-WhooshAlchemy tries to access the model attributes by their names in the table not in the model class:

AttributeError: 'Document' object has no attribute 'dcm_id'