hub

Returns the regional DPLA hub's display name, derived from the Commons media contributed by (P9126) (Wikimedia partnership) chain. Each DPLA-determined file has two publisher entries by design — DPLA itself (Digital Public Library of America (Q2944483)) and the regional hub that aggregates the contributing institution's records (e.g. Plains to Peaks Collective (Q83878503) for the Plains to Peaks Collective). This function returns the label of the non-DPLA publisher.

Returns an empty string if no qualifying hub entry is present.

Wikitext usage:

{{#invoke:DPLA|hub}}

subjects

Returns the union of entity subjects (main subject (P921)) and string subjects (DPLA subject term (P4272)), deduplicated by exact match. Entity subjects are rendered as their Wikidata labels (no link); string subjects are rendered verbatim. Order: P921 first (in entity statement order), then any P4272 strings whose verbatim form isn't already covered by a P921 label.

This addresses a gap in the previous {{DPLA metadata}}, which read only P921 — many DPLA items have only the string form because the source data's subject headings (often Library of Congress Subject Headings) don't reconcile to Wikidata QIDs.

Wikitext usage:

{{#invoke:DPLA|subjects}}
{{#invoke:DPLA|subjects|sep= — }}

creator

Returns the creator(s). Each creator (P170) statement may be:

• an entity (, rendered as the Wikidata label),
• a string (rendered verbatim — used when ingestion3 had a creator name string but no entity match), or
• a "somevalue" snak with a author name string (P2093) stated-as qualifier (used when the specific creator identity is unknown but a name string is given by the contributing institution).

Multiple statements are joined with |sep= (default , ). Returns an empty string if no creator statement is present.

Wikitext usage:

{{#invoke:DPLA|creator}}

date

Returns the date. Tries each DPLA-determined inception (P571) (point in time) statement in turn:

• If the mainsnak is a real time value, formats it with the precision recorded in the snak: day → YYYY-MM-DD, month → YYYY-MM, year → YYYY.
• If the mainsnak is a "somevalue" with a object named as (P1932) stated-as qualifier, returns the qualifier text. This is how DPLA encodes circa dates, date ranges, and other non-machine-readable date expressions.

Returns the first usable rendering; empty string if none.

Wikitext usage:

{{#invoke:DPLA|date}}

local_id

Returns a wikitext bullet item with the local identifier prefixed by the appropriate label:

• For NARA items (hub = National Archives and Records Administration (Q518155)), uses U.S. National Archives Identifier (P1225) (NARA archival identifier) with the label National Archives Identifier.
• For all others, uses inventory number (P217) (collection-or-list identifier), prefixed with the institution name from collection (P195).

Returns an empty string if no identifier is present.

Wikitext usage:

{{#invoke:DPLA|local_id}}

hub_qid

Same lookup as {{#invoke:DPLA|hub}}, but returns the bare Q-ID string (e.g. Q83878503) rather than its label. Suitable as input to {{Label}}, {{Institution}}, or further Wikidata data lookups (e.g. fetching the hub's logo or category property). Empty string if no qualifying publisher entry is present.

institution_qid

Returns the Q-ID of the file's institution (from collection (P195), the collection property). Used to address the institution in the partnership prose and to look up the institution's category. By DPLA convention the collection (P195) institution and the Commons media contributed by (P9126) entry with role = repository (Q108296843) (aggregator) are the same Q-ID; this helper uses P195 because it matches the existing {{DPLA}} template's visible-prose convention.

dpla_id

Returns the file's DPLA item ID (the 32-character hex string from DPLA ID (P760)). Used to construct the https://dp.la/item/... link in the partnership info-box and to gate the SDC-presence check in {{DPLA metadata}}. Empty string if absent.

source_catalog_url

Returns the URL from the file's source of file (P7482) (source of file) statement's described at URL (P973) (described at URL) qualifier — i.e. the contributing institution's own page for this item. Used as the target of the "Record in source catalog" link. Empty string if absent.

partner_logo

Returns the |File:=-prefixed page name for the partner logo to show in the partnership info-box. Looks up the hub's Wikidata item for logo image (P154) (logo image) first, then image (P18) (image) as a fallback. If neither is set (or no hub is present), returns File:DPLA square logo.svg.

categories

Emits the full set of DPLA partner / institution categories for this file as wikitext. Replaces the {{DPLA/hub cat}} and {{DPLA/inst cat}} subpages used by the live {{DPLA}} template, and also emits the main parent category. The returned wikitext is one or more Category:Ellipses (punctuation) links, newline-separated:

• Main category — always added: Media contributed by the Digital Public Library of America.
• Hub category — look up content partnership category (P8464) (Commons category) on the hub Q-ID (publisher role). Fallback ...with unknown partner if the hub's Wikidata item has no Commons category property set.
• Institution category — look up content partnership category (P8464) on the institution Q-ID (aggregator role). Fallback ...with unknown institution.
• Contributing-institution categories — one per Commons media contributed by (P9126) statement with role = custodial unit (Q108296919) that has a Commons category property set. No fallback — these are optional.

Wikitext usage (typically placed at the bottom of {{DPLA metadata}}'s body, outside the divbox):

{{#invoke:DPLA|categories}}