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Diffstat (limited to 'doc/plugins/write.mdwn')
| -rw-r--r-- | doc/plugins/write.mdwn | 62 |
1 files changed, 52 insertions, 10 deletions
diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn index 8e8c3311e..62bebbeed 100644 --- a/doc/plugins/write.mdwn +++ b/doc/plugins/write.mdwn @@ -609,21 +609,54 @@ page created from it. (Ie, it appends ".html".) Use this when constructing the filename of a html file. Use `urlto` when generating a link to a page. -#### `add_depends($$;@)` +### `deptype(@)` + +Use this function to generate ikiwiki's internal representation of a +dependency type from one or more of these keywords: + +* `content` is the default. Any change to the content + of a page triggers the dependency. +* `presence` is only triggered by a change to the presence + of a page. +* `links` is only triggered by a change to the links of a page. + This includes when a link is added, removed, or changes what + it points to due to other changes. It does not include the + addition or removal of a duplicate link. + +If multiple types are specified, they are combined. + +#### `use_pagespec($$;@)` + +Passed a page name, and [[ikiwiki/PageSpec]], returns a list of pages +in the wiki that match the [[ikiwiki/PageSpec]]. + +The page will automatically be made to depend on the specified +[[ikiwiki/PageSpec]], so `add_depends` does not need to be called. This +is significantly more efficient than calling `add_depends` +followed by `pagespec_match_list`. You should use this anytime a plugin +needs to match a set of pages and generate something based on that list. + +Additional named parameters can be specified: + +* `deptype` optionally specifies the type of dependency to add. Use the + `deptype` function to generate a dependency type. +* `limit` is a reference to a function, that is called and passed a page, + and must return true for the page to be included. +* `sort` specifies a sort order for the list. See + [[ikiwiki/PageSpec/sorting]] for the avilable sort methods. +* `reverse` if true, sorts in reverse. +* `num` if nonzero, specifies the maximum number of matching pages that + will be returned. +* `list` makes it only match amoung the specified list of pages. + Default is to match amoung all pages in the wiki. + +#### `add_depends($$;$)` Makes the specified page depend on the specified [[ikiwiki/PageSpec]]. By default, dependencies are full content dependencies, meaning that the page will be updated whenever anything matching the PageSpec is modified. -This default can be overridden by additional named parameters, which can be -used to indicate weaker types of dependencies: - -* `presence` if set to true, only the presence of a matching page triggers - the dependency. -* `links` if set to true, any change to links on a matching page - triggers the dependency. This includes when a link is added, removed, - or changes what it points to due to other changes. It does not include - the addition or removal of a duplicate link. +This can be overridden by passing a `deptype` value as the third parameter. #### `pagespec_match($$;@)` @@ -982,6 +1015,15 @@ an IkiWiki::FailReason object if the match fails. If the match cannot be attempted at all, for any page, it can instead return an IkiWiki::ErrorReason object explaining why. +When constructing these objects, you should also include information about +of any pages whose contents or other metadata influenced the result of the +match. Do this by passing a list of pages, followed by `deptype` values. + +For example, "backlink(foo)" is influenced by the contents of page foo; +"link(foo)" and "title(bar)" are influenced by the contents of any page +they match; "created_before(foo)" is influenced by the metadata of foo; +while "glob(*)" is not influenced by the contents of any page. + ### Setup plugins The ikiwiki setup file is loaded using a pluggable mechanism. If you look |