Enum can't be serialized anymore after upgrade to 7.6.2 about python-arango HOT 2 CLOSED

Hello @sushi2all,

Unfortunately, the update_match method (among others, see 7.6.1) had to be refactored, due to their usage of _api/simple HTTP API, which has been long deprecated since ArangoDB 3.4.

The simple queries provided by the /_api/simple endpoint were limited in functionality and internally resorted to AQL queries anyway. Therefore, we kept the driver methods that used to rely on them, but adapted them to use AQL instead. Apart from being safer and up-to-date, users might notice even a performance improvement from this.

Because the filters (e.g. your match dict) have to be part of an AQL query, they are Json serialized now. Normally this shouldn't pose any problems, but there are corner cases, such as with Enum. You'll have to make your Enum Json serializable. There are several ways to go about this, but I would suggest inheriting from str:

class QueueType(str, Enum):
  OPERATOR = 'o'
  EQUIPMENT = 'e'
  SITE = 's'

Similarly, if your Enum is int-based, you can inherit from IntEnum.

Let me know if this helps!

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Your suggestion worked, thank you! 🙏🏻

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