PostHog

How Reflag integrates with PostHog to query analytics based on feature access filters

With the PostHog integration, you can attach feature access properties to users and groups on PostHog. This will enable you to query analytics based on feature access filters.

Get available features from Reflag

In this example, we're using the @reflag/browser-sdk:

//init
const reflag = new ReflagBrowserSDK.ReflagClient({
  publishableKey: "pub_prod_5eS0G5hX4ZOpwoAw1CKTeP",
  user: {
    id: "u1234",
    name: "Rasmus Makwarth",
  },
});

//get features
const features = reflag.getFeatures();

This will return JSON with all available features for the authenticated user:

"features": {
    "export-to-csv": {
        "isEnabled": true,
        "key": "export-to-csv",
        "targetingVersion": 2
    },
    ...
}

Add as property on PostHog

We can forward all features or pick certain features and send access state to PostHog:

posthog.identify("u1234", {
  name: "Rasmus Makwarth",
  features: {
    "export-to-csv": {
      isEnabled: true,
    },
  },
});

Which will look like this on PostHog:

You may want to add the property to the user's group as well.