Is it possible to call getTreatment() function without passing a user ID?

Question

There are scenarios when there is a need to calculate treatment without specifying a user ID, for example, when using a feature flag as a 100% feature toggle; either "On" or "Off". Is there a way to omit the user ID from the getTreatment call?

Answer

The getTreatment function requires a customer ID, which is usually a hash representation of a the current session's customer. The SDK uses the customer ID when the feature flag includes percentage based targeting rules (for example 50% "On" and 50% "Off"). In this case this is not relevant since we are assigning 100% of a single treatment. However, the SDK still requires the customer ID to calculate the treatment.

If the implementation will not use percentage based treatments, then apply a dummy customer ID with any string value.