Change Details

Spun out of T275807 Readers Web will be A/B testing the existing treatment of the language switcher and a new treatment being worked on as part of #desktop_improvements. The initial cohort will be for **logged-in users only** == AC - [] We should bucketed on a user's centralized ID (global ID) so that they remain consistently bucketed across sites (e.g. If I switch from English to French I should be bucketed the same) - [] When I visit a wiki with the A/B test enabled, I receive either the existing treatment or the new one - [] When I visit a wiki with the A/B test enabled and I have the **magic query string parameter** set then it should have the following effects: | Value | Effect | | --- | --- | | `undefined` | I'm entered into the A/B test and bucketed as usual | | `control` | I see the existing treatment | | `A` | I see the new treatment | # Developer Bucketing should happen on the server side - perhaps adding a class to the body tag to help with bucketing.

Spun out of T275807 Readers Web will be A/B testing the existing treatment of the language switcher and a new treatment being worked on as part of #desktop_improvements. The initial cohort will be for **logged-in users only** == AC - [] We should bucketed on a user's centralized ID (global ID) so that they remain consistently bucketed across sites (e.g. If I switch from English to French I should be bucketed the same) - [] When I visit a wiki with the A/B test enabled, I receive either the existing treatment or the new one - [] When I visit a wiki with the A/B test enabled and I have the **magic query string parameter** set then it should have the following effects: | Value | Effect | | --- | --- | | `undefined` | I'm entered into the A/B test and bucketed as usual | | `control` | I see the existing treatment | | `A` | I see the new treatment | # Developer Notes 1. Bucketing should happen on the server side -- Would adding a class to the body tag to help with bucketing 2. > We should bucketed on a user's centralized ID (global ID) so that they remain consistently bucketed across sites… This change be achieved with the following: ```lang=php $lookup = CentralIdLookup::factoryNonLocal(); $id = null; if ( $lookup ) { $id = $lookup->centralIdFromLocalUser( $user ); } // The central ID lookup failed? if ( !$id ) { $id = $user->getId(); } ```

Spun out of T275807 Readers Web will be A/B testing the existing treatment of the language switcher and a new treatment being worked on as part of #desktop_improvements. The initial cohort will be for **logged-in users only** == AC - [] We should bucketed on a user's centralized ID (global ID) so that they remain consistently bucketed across sites (e.g. If I switch from English to French I should be bucketed the same) - [] When I visit a wiki with the A/B test enabled, I receive either the existing treatment or the new one - [] When I visit a wiki with the A/B test enabled and I have the **magic query string parameter** set then it should have the following effects: | Value | Effect | | --- | --- | | `undefined` | I'm entered into the A/B test and bucketed as usual | | `control` | I see the existing treatment | | `A` | I see the new treatment | # Developer Notes 1. Bucketing should happen on the server side - perhaps -- Would adding a class to the body tag to help with bucketing. 2. > We should bucketed on a user's centralized ID (global ID) so that they remain consistently bucketed across sites… This change be achieved with the following: ```lang=php $lookup = CentralIdLookup::factoryNonLocal(); $id = null; if ( $lookup ) { $id = $lookup->centralIdFromLocalUser( $user ); } // The central ID lookup failed? if ( !$id ) { $id = $user->getId(); } ```