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feature-flags.md

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Using feature flags

Feature flags are a convenient way to toggle certain features per user or per session. Enabled feature flags are fetched in 'ApplicationController', so they are available within controllers and views.

Valid feature flags are defined in FeatureFlagService::Store, in FLAGS constant.

Feature flags can be accessed by these helper functions:

feature_enabled?

if feature_enabled?(:new_search)
  @search_engine = :zappy
else
  @search_engine = :sphinx
end

with_feature

with_feature(:new_logging) do
  new_logger.debug("foo")
end

feature_flags

all_features_in_use = feature_flags

Feature flags can be toggled in two ways:

  1. Query params If you're logged in as superadmin, you can append ?enable_feature=<your_flag> to enable the feature for current session

  2. Run a command in console

    • Community-specific flag: FeatureFlagService::API::Api.features.enable(community_id: <community_id>, features: [:<your_flag>])
    • User-specific flag: FeatureFlagService::API::Api.features.enable(community_id: <community_id>, person_id: <person_id>, features: [:<your_flag>])