89 lines
4.6 KiB
Markdown
89 lines
4.6 KiB
Markdown
[[!template id=plugin name=comments author="[[Simon_McVittie|smcv]]"]]
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[[!tag type/useful]]
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This plugin adds "blog-style" comments. The intention is that on a non-wiki site
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(like a blog) you can lock all pages for admin-only access, then allow otherwise
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unprivileged (or perhaps even anonymous) users to comment on posts.
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When using this plugin, you should also enable [[htmlscrubber]] and either [[htmltidy]]
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or [[htmlbalance]]. Directives are filtered out by default, to avoid commenters slowing
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down the wiki by causing time-consuming processing. As long as the recommended plugins
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are enabled, comment authorship should hopefully be unforgeable by CGI users.
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The plugin adds a new [[ikiwiki/PageSpec]] match type, `postcomment`, for use
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with `anonok_pagespec` from the [[plugins/anonok]] plugin or `locked_pages` from
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the [[plugins/lockedit]] plugin. Typical usage would be something like:
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locked_pages => "!postcomment(*)"
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to allow non-admin users to comment on pages, but not edit anything. You can also do
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anonok_pages => "postcomment(*)"
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to allow anonymous comments (the IP address will be used as the "author").
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There are some global options for the setup file:
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* `comments_shown_pagespec`: pages where comments will be displayed inline, e.g. `blog/*`
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or `*/discussion`.
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* `comments_open_pagespec`: pages where new comments can be posted, e.g.
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`blog/* and created_after(close_old_comments)` or `*/discussion`
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* `comments_pagename`: if this is e.g. `comment_` (the default), then comments on the
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[[sandbox]] will be called something like `sandbox/comment_12`
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* `comments_allowdirectives`: if true (default false), comments may contain IkiWiki
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directives
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* `comments_commit`: if true (default true), comments will be committed to the version
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control system
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* `comments_allowauthor`: if true (default false), anonymous commenters may specify a
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name for themselves, and the \[[!meta author]] and \[[!meta authorurl]] directives
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will not be overridden by the comments plugin
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Templates that will display comments (by default that means `comments_display.tmpl`)
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can use the following additional `<TMPL_VAR>`s:
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* `COMMENTUSER`: the authenticated/verified user name, or undefined if the user was not signed in
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* `COMMENTIP`: the remote IP address, or undefined if not known (this is not currently recorded
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for users who are signed in, who are assumed to be vaguely accountable)
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* `COMMENTAUTHOR`: a "prettier" version of the authenticated/verified user name (e.g. OpenIDs are
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formatted the same way as in [[RecentChanges]]), or the result of localizing "Anonymous" if the
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user was not signed in
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* `COMMENTAUTHORURL`: if the user was signed in with an OpenID, that URL; if the user was signed
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in with some other username, a CGI URL that redirects to their user page (if any)
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This plugin also adds a `\[[!comment]]` directive which is used when storing comments. This
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directive shouldn't be used on pages that are edited in the usual way.
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This plugin aims to close the [[todo]] item "[[todo/supporting_comments_via_disussion_pages]]",
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and is currently available from [[smcv]]'s git repository on git.pseudorandom.co.uk (it's the
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`comments-rebase1` branch). A demo wiki with the plugin enabled is running at
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<http://www.pseudorandom.co.uk/2008/ikiwiki/demo/>; the
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[sandbox page](http://www.pseudorandom.co.uk/2008/ikiwiki/demo/sandbox/#comments) has some
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examples of comments.
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Known issues:
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* Needs code review
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* The access control via postcomment() is rather strange (see [[discussion]] for more details)
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* There is some common code cargo-culted from other plugins (notably inline and editpage) which
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should probably be shared
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* Joey doesn't think it should necessarily use internal pages (see [[discussion]])
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* `\[[!comment]]` should perhaps be `\[[!_comment]]`, or a special filter/htmlize hook rather
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than being a directive at all
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* Previews always say "unknown IP address"
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* [[todo/inline_plugin:_ability_to_override_the_feed_name]]
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* [[todo/inline_plugin:_hide_feed_buttons_if_empty]]
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> I haven't done a detailed code review, but I will say I'm pleased you
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> avoided re-implementing inline! --[[Joey]]
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Fixed issues:
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* Joey didn't think the `\[[!comments]]` directive was appropriate; comments now appear
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on pages selected with a [[ikiwiki/pagespec]]
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* Joey thought that raw HTML should always be allowed; it now is
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* tbm wanted anonymous people to be able to enter their name and possibly email
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address; a name and website can now be supplied
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* There is now an indication of who you're signed in as
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* Each comment is now one big \[[!comment]] directive invocation, avoiding previous
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issues with unambiguous and un-spoofable metadata
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