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ReferencePeople and contact

LanguageValues and typesStandard typesPeople and contact

Uprn

On this page

A Unique Property Reference Number, the identifier for a property in Great Britain.

Use it to refer to a building or plot in data from Ordnance Survey or local government. To write to someone, use PostalAddress.

Shape

One value, held as text in one set form, with no parts: 100023336956.

Example

example
Uprn("100023336956")

Uprn(raw) checks the text, and text that isn't one breaks the format rule.

text.parse(raw, as: Uprn) reads one from text that comes from outside. Text that isn't one at all fails malformed, such as 0, 0100023336956 or 1000233369561.

Good to know

  • It is text, not a number, even though it holds only digits. It has up to 12 digits and can't start with a zero.
  • == tells you whether two are the same. < and list.sort_by don't take it.
  • A field that holds one counts as personal data (contact), so you don't mark it yourself.

In JSON

A string, in a request, a response or json.write:

json
"1""100023336956"

Details

Text form, storage, how it is shown, and operations

Uprn is in the group People and contact, and has been in Jadpo since 0.1.0.

Text form

text.from writes one standard text form, the same form text.parse reads back: 1 and 100023336956.

How it is stored

It is stored in one column named for the field, of type text. 100023336956 is stored as '100023336956'.

How it is shown to people

text.format(value, locale:) shows it to people in their locale.

With locale: Locale.en_gb:

Value Shown
1 1
100023336956 100023336956

Operations

It also takes text.parse, text.from, text.format, json.read, json.write and ==. How every standard type behaves says how they work.

Markdown for agents: /docs/types/type-uprn.md.Built from Jadpo main at aee2e8f.