document aggregateinternal

1 files changed, 38 insertions, 5 deletions

diff --git a/doc/plugins/aggregate.mdwn b/doc/plugins/aggregate.mdwn
index 574c8b125..21a8105d0 100644
--- a/doc/plugins/aggregate.mdwn
+++ b/doc/plugins/aggregate.mdwn
@@ -2,9 +2,9 @@
 [[tag type/useful]]
 
 This plugin allows content from other feeds to be aggregated into the wiki.
-Aggregate a feed as follows
+Aggregate a feed as follows:
 
-	\[[aggregate name="example blog"
+	\[[aggregate name="example blog" dir="example"
 	feedurl="http://example.com/index.rss"
 	url="http://example.com/" updateinterval="15"]]
 
@@ -13,7 +13,9 @@ more frequently than once every 15 minutes, and puts a page per post under
 the example/ directory in the wiki.
 
 You can then use ikiwiki's [[ikiwiki/blog]] support to create a blog of one or
-more aggregated feeds.
+more aggregated feeds. For example:
+
+	\[[inline pages="internal(example/*)"]]
 
 ## setup
 
@@ -31,7 +33,7 @@ crontab entry:
 Alternatively, you can allow `ikiwiki.cgi` to trigger the aggregation. You
 should only need this if for some reason you cannot use cron, and instead
 want to use a service such as [WebCron](http://webcron.org). To enable
-this, enable on `aggregate_webtrigger` in your setup file. The url to
+this, turn on `aggregate_webtrigger` in your setup file. The url to
 visit is `http://whatever/ikiwiki.cgi?do=aggregate_webtrigger`. Anyone
 can visit the url to trigger an aggregation run, but it will only check
 each feed if its `updateinterval` has passed.
@@ -59,9 +61,40 @@ directive:
 * `tag` - A tag to tag each post from the feed with. A good tag to use is
   the name of the feed. Can be repeated multiple times. The [[tag]] plugin
   must be enabled for this to work.
-* `template` - Template to use for creating the html pages. Defaults to
+* `template` - Template to use for creating the aggregated pages. Defaults to
   aggregatepost.
 
 Note that even if you are using subversion or another revision control
 system, pages created by aggregation will *not* be checked into revision
 control.
+
+## internal pages
+
+This plugin creates a page for each aggregated item. 
+
+Currently, by default, these pages have the ".html" extension, and are
+first-class wiki pages -- which allows them to be inlined into blogs
+and even edited.
+
+That turns out to not be ideal for aggregated content, because publishing
+files for each of those pages is a waste of disk space and CPU, and you probably
+don't want to allow them to be edited. So, there is an alternate method
+that can be used, turned on by the `aggregateinternal` option in the setup
+file.
+
+If `aggregateinternal` is enabled, aggregated pages are stored in the source
+directory with a "._aggregate" extension. These pages cannot be edited by
+web users, and do not generate first-class wiki pages. They can only be
+inlined into a blog.
+
+If you are already using aggregate and want to enable `aggregateinternal`,
+you should follow this process:
+
+1. Update all [[PageSpecs|ikiwiki/PageSpec]] that refer to the aggregated
+   pages -- such as those in inlines. Put "internal()" around globs 
+   in those PageSpecs. For example, if the PageSpec was "foo/*", it should
+   be changed to "internal(foo/*)". This has to be done because internal
+   pages are not matched by regular globs.
+2. Use [[ikiwiki-transition]] to move all existing aggregated `.html`
+   files. The command to run is `ikiwiki-transition aggregateinternal $srcdir`
+3. Turn on `aggregateinternal` in the setup file and rebuild the wiki.