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1 | <?php |
2 | |
3 | namespace MediaWiki\Page; |
4 | |
5 | use MediaWiki\Title\Title; |
6 | |
7 | /** |
8 | * Convenience trait for conversion to PageIdentity. |
9 | * |
10 | * For the cross-wiki aware code, this should be used instead of PageIdentity::getId |
11 | * until Title is dropped. Before transition to PageIdentity, Title could exist for |
12 | * foreign wikis with no indication about it (Title does not have $wikiId). |
13 | * It was very brittle, but it worked. Until Title is deprecated in the codebase, |
14 | * most of the PageIdentity instances passed around are Titles. So for cross-wiki access, |
15 | * stricter domain validation of PageIdentity::getId will break wikis. |
16 | * |
17 | * Additionally, loose checks on Title regarding whether the page can exist or not |
18 | * have been depended upon in a number of places in the codebase. |
19 | * |
20 | * This trait is only supposed to be used in cross-wiki aware code, and only exists until |
21 | * code up the stack is guaranteed not to pass Title. |
22 | * |
23 | * @internal |
24 | */ |
25 | trait LegacyArticleIdAccess { |
26 | /** |
27 | * Before transition to PageIdentity, Title could exist for foreign wikis. |
28 | * It was very brittle, but it worked. Until Title is deprecated in the codebase, |
29 | * most of the PageIdentity instances passed around are Titles. |
30 | * So for cross-wiki access, stricter domain validation of PageIdentity::getId |
31 | * will break wikis. This method supposed to exist only for the transition period |
32 | * and will be removed after. |
33 | * |
34 | * Additionally, loose checks on Title regarding whether the page can exist or not |
35 | * have been depended upon in a number of places in the codebase. |
36 | * |
37 | * @param PageIdentity $title |
38 | * @return int |
39 | */ |
40 | protected function getArticleId( PageIdentity $title ): int { |
41 | if ( $title instanceof Title ) { |
42 | return $title->getArticleID(); |
43 | } |
44 | return $title->getId( $this->getWikiId() ); |
45 | } |
46 | |
47 | /** |
48 | * Get the ID of the wiki this revision belongs to. |
49 | * |
50 | * @return string|false The wiki's logical name, of false to indicate the local wiki. |
51 | */ |
52 | abstract protected function getWikiId(); |
53 | } |