[Question] Why is `BaseResource._ids` yielding primary keys twice ?

[cans]

The BaseResource._ids property yields all so called primary keys twice, once as the value of the attribute itself, once as the value of the attribute cast to a string with str.

Several questions about that:

• Why doing so ? What is the use case ?
• If there is a use case indeed, nothing prevents me to use an array, dict or object attribute as a key. What would be the meaning of str(object) ?

Not convinced that works well and since it is not used anywhere in the code, not sure there actually is a need for this.

Also as a side note, I think the name _pks is very much misleading. An entity can only have several keys but only one primary key (which is where I guess pk in _pks is coming from).

I welcome any feedback on this. Thanks in advance.

[martyzz1]

I'll have to come back to you on this. Off the top of my head I think this was part of the original inherited code from the heroku.py project.