Get Forced Variation
This topic describes the Get Forced Variation method, which returns the forced variation set by Set Forced Variation, or null if no variation was forced.
Returns the forced variation set by Set Forced Variation, or null if no variation was forced.
A user can be forced into a variation for a given experiment for the lifetime of the Optimizely client. This method gets the variation that the user has been forced into. The forced variation value is runtime only and does not persist across application launches.
Version
SDK v3.0, v3.1
Description
Forced bucketing variations take precedence over whitelisted variations, variations saved in a User Profile Service (if one exists), and the normal bucketed variation. Variations are overwritten when Set Forced Variation is invoked.
Note
A forced variation only persists for the lifetime of an Optimizely client.
Parameters
This table lists the required and optional parameters for the Swift SDK.
| Parameter | Type | Description |
|---|---|---|
| experimentKey required | string | The key of the experiment to retrieve the forced variation. |
| userId required | string | The ID of the user in the forced variation. |
Returns
It returns a forced variation if it exists, otherwise returns nil.
Example
let variationKey = optimizely.getForcedVariation(experimentKey: "my_experiment_key",
userId: "user_123")
NSString *variationKey = [optimizely getForcedVariationWithExperimentKey:@"my_experiment_key"
userId:@"user_123"];
Source files
The language/platform source files containing the implementation for Swift is OptimizelyClient.swift.
Updated over 2 years ago