Assignment

Rasuvaeff\Yii3AbTesting\Assignment

Class · rasuvaeff/yii3-ab-testing · Source

The outcome of resolving a subject into a variant.

Two independent axes describe it: DecisionReason says why this variant rather than the hash bucket, AssignmentSource says where the value came from. They replace the four overlapping booleans of v1, which could not express a sticky-served forced variant and, worse, could not tell a disabled experiment apart from a targeting miss once serialized.

Constructor

new Assignment(
    string $experiment,
    string $variant,
    string $subjectId,
    DecisionReason $reason = DecisionReason::Assigned,
    AssignmentSource $source = AssignmentSource::Computed,
    ?AssignmentContext $context = null,
    ?string $configurationId = null,
)

Properties

Property	Type	Readonly	Description
experiment	string	yes
variant	string	yes
subjectId	string	yes
reason	DecisionReason	yes
source	AssignmentSource	yes
context	?AssignmentContext	yes
configurationId	?string	yes

Methods

isVariant()

isVariant(string $variant): bool

isFallback()

isFallback(): bool

Served the fallback variant, for either of the two reasons.

isForced()

isForced(): bool

Overridden explicitly, bypassing targeting and any store.

isTargetingMismatch()

isTargetingMismatch(): bool

Fell back because the targeting rules did not match the context.

isSticky()

isSticky(): bool

Replayed from an AssignmentStore rather than computed.