Flatten Properties

Flattens nested event properties into top-level keys joined by a separator, for example a.b.c becomes a__b__c.

Configuration

Option	Description
`Separator` Type: string Required: True	The string used to join nested keys, for example __ turns a.b into a__b.

Using our REST API you can create this transformation like so:

Terminal
# Create a new destination
curl --location 'https://us.i.posthog.com/api/environments/:project_id/hog_functions' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer <POSTHOG_PERSONAL_API_KEY>' \
--data '{
    "type": "transformation",
    "name": "Flatten Properties",
    "inputs": {
        "separator": {
            "value": ""
        }
    },
    "enabled": true,
    "template_id": "template-flatten-properties"
}'