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krisleech/locking.md

Created January 13, 2015 16:03
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locking.md

Data referenced in code

Sometimes data is referenced in code, for example a dynamically created "tab" has a key (it's unique id).

If we want to fetch that tab in our code, we do Tab.find_by_key('organisations'). This will break if a user deletes this tab.

Locking some fields of an entity should solve this.

EntityLock(entity_class, entity_uuid, attributes, reason)

EntityLock.lock(entity)
EntityLock.lock(entity, [key, name])
EntityLock.locked?(entity)
EntityLock.locked?(entity, for: attributes)

# attributes can be an array or hash (keys will be taken).

The entity would not know about locking and it would be up to a repository or service object to check.

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