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The 35 articles still in their seed form previously carried a banner reading "Seed article. ... Domain stewards should expand, restructure, and refine as needed." For a community preview, that phrasing reads as "TODO left in production" to first-time visitors. Replace all three banner variants (performance-seeded, security-seeded, community-ported) with a single positive invitation: > Contributions welcome — open a PR to refine or extend this article. Content and structure of the articles are unchanged; only the leading quote block differs. Articles that had their banner fully stripped in the earlier triage pass (the showcase-grade ten) are unaffected.
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Do not expose sensitive data in event publishers
Contributions welcome — open a PR to refine or extend this article.
Description
Events in AL are extensibility contracts. Every subscriber — third-party, internal, or installed after the fact — receives the full set of event parameters. Parameters that carry secrets, pre-authorization state, or variables the publisher relies on for access control effectively become public, and var-parameters can be mutated by a subscriber to alter publisher behaviour.
Best Practice
Design event signatures to carry only the data a subscriber legitimately needs. Do not pass SecretText, credential material, or flags the publisher depends on for access control. If a subscriber needs to veto an action, model it as a separate OnBefore event whose Handled pattern is documented — not as a general-purpose var Boolean callers can flip.
See sample: do-not-expose-sensitive-data-in-event-publishers.good.al.
Anti Pattern
An OnBeforeElevateAccess publisher that exposes var CanAccess: Boolean — any subscriber installed on the tenant can flip it to true and escalate. Or a publisher that passes a SecretText parameter it obtained internally, handing it to every subscriber.
See sample: do-not-expose-sensitive-data-in-event-publishers.bad.al.