Function delete 

pub async fn delete(
    pool: &PgPool,
    actor: &Actor,
    item_id: Uuid,
) -> AppResult<String>

Deletes an item created by mistake. Only allowed while it has a single in-work revision, is not used in any BOM, not part of any change, no simulation basis, no design that units were built to and – in a restricted group – no affected item of a change request.

Invariants

• Permission: editor role (403); the item is visible to the actor (“not found” otherwise); only its creator (as a member of the group) or an admin may delete it (403).
• Locks: the item row (FOR UPDATE); the project group row (FOR SHARE) when the item has one.
• Audit: item.delete; in an unrestricted group also change_request.remove_item for every change request that named the item.
• Notifications: the people of those change requests (unrestricted groups only).
• Webhooks: none.
• Refused with 409: more than one revision or one not in work, used in a BOM, part of a change, basis of a simulation, units were recorded as built to it (a build record names one of its revisions), or (restricted group) an affected item of a change request.
• Atomic: one transaction.