Function update 

pub async fn update(
    pool: &PgPool,
    actor: &Actor,
    id: Uuid,
    settings: AttributeSettings,
) -> AppResult<AttributeDef>

Changes label, unit, choices, item types, order and the active flag (administrators). Key and data type stay.

Invariants

• Permission: admin role (403 otherwise); an unknown definition is “not found”.
• Locks: the definition row (FOR UPDATE).
• Audit: attribute.update.
• Notifications / webhooks: none.
• Atomic: one transaction.