Property talk:P2679

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author of foreword
person who wrote the preface, foreword, or introduction of the book but who isn't an author of the rest of the book

Represents	introducer (Q98196947)
Data type	Item
Domain	According to this template: books According to statements in the property: document (Q49848), version, edition or translation (Q3331189), written work (Q47461344) or collection of literary works (Q108329152) When possible, data should only be stored as statements
Allowed values	person (note: this should be moved to the property statements)
Example	Bottroper Protokolle (Q15771066) → Martin Walser (Q57387) Després del procés, què? (Q111628502) → Jordi Cuixart i Navarro (Q21530373)
Tracking: usage	Category:Pages using Wikidata property P2679 (Q63078692)
See also	author of afterword (P2680)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties By value of property Most statements Fewest statements Most sitelinks Most linked wikis Total of sitelinks on items Most identifiers Fewest identifiers Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P2679 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2,711 Main statement 2,698 99.5% of uses Qualifier 9 0.3% of uses Reference 4 0.1% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Type “document (Q49848), version, edition or translation (Q3331189), written work (Q47461344), collection of literary works (Q108329152)”: item must contain property “instance of (P31)” with classes “document (Q49848), version, edition or translation (Q3331189), written work (Q47461344), collection of literary works (Q108329152)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2679#Type Q49848, Q3331189, Q47461344, Q108329152, SPARQL

Value type “human (Q5), fictional character (Q95074)”: This property should use items as value that contain property “instance of (P31)”. On these, the value for instance of (P31) should be an item that uses subclass of (P279) with value human (Q5), fictional character (Q95074) (or a subclass thereof). (Help)

List of violations of this constraint: Database reports/Constraint violations/P2679#Value type Q5, Q95074, hourly updated report, SPARQL

Item “instance of (P31)”: Items with this property should also have “instance of (P31)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P2679#Item P31, hourly updated report, search, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2679#Entity types

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2679#Scope, SPARQL

Qualifiers “series ordinal (P1545), object named as (P1932), author given names (P9687), author last names (P9688), object has role (P3831)”: this property should be used only with the listed qualifiers. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2679#allowed qualifiers, SPARQL

Recommended qualifier

Qualifier has edition or translation (P747) is recommended with this property if editions of the work have their own items. If editions do not have their own items, another unique identifier such as ISBN-13 (P212) may be used to qualify the property. Swpb (talk) 19:22, 29 March 2016 (UTC)

Constraint P106 Q19839393

Hi y'all,

I'm wondering: is the constraint occupation (P106) preface author (Q19839393) really a good idea? I mean preface author (Q19839393) is not really a occupation (P106), only stricto sensu or anecdotically, these people are not "known" to be preface author (Q19839393) and it would be hard to find a reference for that.

Meanwhile, for the numbers, for 426 uses of this property there is 389 constraint violations… Obviously, we can add the occupation (P106) automatically but that brings us back to my first point, is it really something we want?

Pinging the top users of this property and the person who added this constraint: @Manu1400, Ambre Troizat, Envlh, Newnewlaw, Ankry:

Cheers, VIGNERON (talk) 08:08, 25 March 2019 (UTC)

I think the constraint is wrong and unneeded. Being preface author (Q19839393) is most often an accidental activity. Ankry (talk) 08:17, 25 March 2019 (UTC)

Hi, every one !

I do think the same that Ankry : being a "prefacier" is most often an accidental activity. For myself, you can take it off. Thanks a lot. --Ambre Troizat (talk) 17:55, 2 April 2019 (UTC)

I agree that preface author (Q19839393) should not be considered as an occupation (P106). The property occupation (P106) should be used for something that made the person notable by the sources, not something that is anecdotal. — Envlh (talk) 14:13, 13 April 2019 (UTC)

@Manu1400, Ankry, Ambre Troizat, Envlh: in 2+ weeks: 3 in favor, 0 opposition; I removed this constraint. Cheers, VIGNERON (talk) 09:31, 14 April 2019 (UTC)

Consolidation into P50?

This property strikes me a s a little over-specialised. There are many parts of a book or other text that may have a specific author (some books will have different authors for each chapter). Would it not be more versatile to use author (P50) with the qualifier that it applies to part (P518) foreword (Q1358138)? T.Shafee(evo&evo) (talk) 02:56, 18 October 2020 (UTC)

Property for deletion

This was listed at Wikidata:Properties for deletion/P2679, but kept. --- Jura 10:33, 9 February 2022 (UTC)

Gender neutral labels in French

Following this request for comments, the French label now includes the male and the female form. PAC2 (talk) 18:55, 17 June 2022 (UTC)