The code was immutable, which made a typo permanent. It cannot be freely mutable
either, and not only because hosts.datacenter references it: each host's DNS name
was minted from it and registered at the provider, the machine's own hostname was
set from it as it was built, the counter handing out those numbers is keyed by
it, and every past order stores it as plain text with no foreign key to follow.
Renaming a code with hosts in it is not a rename — it is a datacenter called hel
full of machines called fsn-01.
So it is editable exactly while nothing references it, which is the case that
matters: a typo noticed shortly after creating one. Once a host or an order
depends on it the field is disabled and says what is holding it, with the
numbers. The lock is recomputed from the database on every save, never read back
from the property the browser returns.
Alongside it, an optional free-text field for the specific datacenter —
fsn-dc-15. A provider runs several within one location, on separate power and
separate uplinks, and two entries both reading "Falkenstein (fsn)" are not a
choice anybody can make. Nothing keys off it; the code remains the identifier.
Also renames the country loop variables in the edit modal. They were $code and
$name — the component's own properties — and shadowed them for the rest of the
file. Harmless while nothing below the loop read them, which stopped being true
the moment the code became an editable field above it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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