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diff --git a/doc/todo/supporting_comments_via_disussion_pages.mdwn b/doc/todo/supporting_comments_via_disussion_pages.mdwn new file mode 100644 index 000000000..420ae4a7e --- /dev/null +++ b/doc/todo/supporting_comments_via_disussion_pages.mdwn @@ -0,0 +1,222 @@ +I would love to see more traditional support for comments in ikiwiki. One +way would be to structure data on the discussion page in such a way that a +"comment" plugin could parse it and yet the discussion page would still be +a valid and usable wiki page. + +For example if the discussion page looked like this: + + # Subject of First Comment + Posted by [Adam Shand](http://adam.shand.net/) at 10:34PM on 14/04/2007 + + Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi consectetuer nunc quis + magna. Etiam non est eget sapien vulputate varius. Vivamus magna. Sed justo. Donec + pellentesque ultrices urna. + + # Subject of the Second Comment + Posted by [Foo Bar](http://foobar.net/) at 11:41PM on 14/04/2007 + + Quisque lacinia, lorem eget ornare facilisis, enim eros iaculis felis, id volutpat nibh + mauris ut felis. Vestibulum risus nibh, adipiscing volutpat, volutpat et, lacinia ut, + pede. Maecenas dolor. Vivamus feugiat volutpat ligula. + +Each header marks the start of a new comment and the line immediately +following is the comments meta data (author, email/url, datestamp). +Hopefully you could structure it in such a way that the scope + +This would allow: + + * A comment plugin to render the comments in "traditional blog" format . + * Possibly even support nesting comments by the header level? + * A comment plugin to create a form at the bottom of the page for people to add comments in the appropriate format to the discussion page + * Still remain usable and readable by people who work via svn. + * When there is ACL support you could mark the discussion page as read only so it could only be updated by the comment plugin (if that's what you wanted) + +Is this simple enough to be sensible? + +-- [[AdamShand]] + +> Well, if it's going to look like a blog, why not store the data the same +> way ikiwiki stores blogs, with a separate page per comment? As already +> suggested in [[discussion_page_as_blog]] though there are some things to +> be worked out also discussed there. +> --[[Joey]] + +>> I certainly won't be fussy about how it gets implemented, I was just trying to think of the lightest weight most "wiki" solution. :-) -- Adam. + +>>> As a side note, the feature described above (having a form not to add a page but to expand it in a formated way) would be useful for other things when the content is short (timetracking, sub-todo list items, etc..) --[[hb]] + +# [[MarceloMagallon]]'s implementation + +I've been looking into this. I'd like to implement a "blogcomments" +plugin. Looking at the code, I think the way to go is to have a +formbuilder_setup hook that uses a different template instead of the +standard editpage one. That template would not display the editcontent +field. The problem that I'm running into is that I need to append the new +content to the old one. + +-- [[MarceloMagallon]] + +> Anything I can do to help? --[[Joey]] + +>> Figured it out. Can you comment on the code below? Thanks. -- [[MarceloMagallon]] + +So, I have some code, included below. For some reason that I don't quite get it's not updating the wiki page after a submit. Maybe it's something silly on my side... + +What I ended up doing is write something like this to the page: + + [[!blogcomment from="""Username""" timestamp="""12345""" subject="""Some text""" text="""the text of the comment"""]] + +Each comment is processed to something like this: + + <div> + <dl> + <dt>From</dt><dd>Username</dd> + <dt>Date</dt><dd>Date (needs fixing)</dd> + <dt>Subject</dt><dd>Subject text</dd> + </dl> + + <p>Text of the comment...</p> + </div> + +. In this way the comments can be styled using CSS. + +-- [[MarceloMagallon]] + +## Code + + #!/usr/bin/perl + package IkiWiki::Plugin::comments; + + use warnings; + use strict; + use IkiWiki '1.02'; + + sub import { + hook(type => "formbuilder_setup", id => "comments", + call => \&formbuilder_setup); + hook(type => "preprocess", id => "blogcomment", + call => \&preprocess); + } + + sub formbuilder_setup (@) { + my %params=@_; + my $cgi = $params{cgi}; + my $form = $params{form}; + my $session = $params{session}; + + my ($page)=$form->field('page'); + $page=IkiWiki::titlepage(IkiWiki::possibly_foolish_untaint($page)); + + # XXX: This needs something to make it blog specific + unless ($page =~ m{/discussion$} && + $cgi->param('do') eq 'edit' && + ! exists $form->{title}) + { + return; + } + + if (! $form->submitted) + { + $form->template(IkiWiki::template_file("makeblogcomment.tmpl")); + $form->field(name => "blogcomment", type => "textarea", rows => 20, + cols => 80); + return; + } + + my $content=""; + if (exists $pagesources{$page}) { + $content=readfile(srcfile($pagesources{$page})); + $content.="\n\n"; + } + my $name=defined $session->param('name') ? + $session->param('name') : gettext('Anonymous'); + my $timestamp=time; + my $subject=defined $cgi->param('comments') ? + $cgi->param('comments') : ''; + my $comment=$cgi->param('blogcomment'); + + $content.=qq{[[!blogcomment from="""$name""" timestamp="""$timestamp""" subject="""$subject""" text="""$comment"""]]\n\n}; + $content=~s/\n/\r\n/g; + $form->field(name => "editcontent", value => $content, force => 1); + } + + sub preprocess (@) { + my %params=@_; + + my ($text, $date, $from, $subject, $r); + + $text=IkiWiki::preprocess($params{page}, $params{destpage}, + IkiWiki::filter($params{page}, $params{text})); + $from=exists $params{from} ? $params{from} : gettext("Anonymous"); + $date=localtime($params{timestamp}) if exists $params{timestamp}; + $subject=$params{subject} if exists $params{subject}; + + $r = qq{<div class="blogcomment"><dl>\n}; + $r .= '<dt>' . gettext("From") . "</dt><dd>$from</dd>\n" if defined $from; + $r .= '<dt>' . gettext("Date") . "</dt><dd>$date</dd>\n" if defined $date; + $r .= '<dt>' . gettext("Subject") . "</dt><dd>$subject</dd>\n" + if defined $subject; + $r .= "</dl>\n" . $text . "</div>\n"; + + return $r; + } + + 1; + +# [[smcv]]'s implementation + +I've started a smcvpostcomment plugin (to be renamed to postcomment if people like it, but I'm namespacing it while it's still experimental) which I think more closely resembles what Joey was after. The code is cargo-culted from a mixture of editpage and inline's "make a blog post" support - it has to use a lot of semi-internal IkiWiki:: functions (both of those plugins do too). It doesn't fully work yet, but I'll try to get it into a state where it basically works and can be published in the next week or two. + +My approach is: + +* Comments are intended to be immutable after posting (so, only editable by direct committers), so they go on internal pages (*._comment); these internal pages are checked in to the RCS (although later I might make this optional) + +* ?do=smcvpostcomment (in the CGI script) gives a form that lets logged-in users (later, optionally also anonymous users) create a new comment + +* \[[!smcvpostcomment]] just inserts a "Post comment" button into the current page, which goes to ?do=smcvpostcomment - it's intended to be used in conjunction with an \[[!inline]] that will display the comments + +* The title (subject line), author and authorurl are set with \[[!meta]] directives, just like the way aggregate does it (which means I'll probably have to disallow the use of those \[[!meta]] directives in the body of the comment, to avoid spoofing - obviously, spoofing can be detected by looking at RecentChanges or gitweb, but the expectation for blog-style comments is that the metadata seen in the comment can be trusted) + +* The initial plan is to have comments hard-coded to be in Markdown, with further directives not allowed - I'll relax this when I've worked out what ought to be allowed! + +I've also updated Marcelo's code (above) to current ikiwiki, and moved it to a "marceloblogcomment" namespace - it's in the "marcelocomments" branch of my repository (see <http://git.debian.org/?p=users/smcv/ikiwiki.git;a=log;h=refs/heads/marcelocomments>). I had to reconstitute the .tmpl file, which Marcelo didn't post here. + +--[[smcv]] + +OK, the postcomment branch in my repository contains an implementation. What +do you think so far? Known issues include: + +* The combination of RSS/Atom links and the "post new comment..." button is + ugly - I need a way to integrate the "new comment" button into the feed links + somehow, like the way inline embeds its own "new blog post..." feature + (I don't think the current way really scales, though) + +* There are some tweakables (whether to commit comments into the VCS, whether + wikilinks are allowed, whether directives are allowed) that are theoretically + configurable, but are currently hard-coded + +* The wikilink/directive disarming doesn't work unless you have + prefixdirectives set (which I just realised) + +* \[[!smcvpostcomment]] now displays the comments too, by invoking \[[!inline]] + with suitable parameters - but it does so in a very ugly way + +* Start-tags in a comment with no corresponding end-tag break page formatting + (unless htmltidy is enabled - inline and aggregate have the same problem) + +* There is no access control, so anonymous users can always comment, and so + can all logged-in users. Perhaps we need to extend canedit() to support + different types of edit? Or perhaps I should ignore canedit() and make the + access control configurable via a parameter to \[[!smcvpostcomment]]? + I'd like to be able to let anonymous (or at least non-admin) users comment + on existing pages, but not edit or create pages (but perhaps I'm being too + un-wikiish). + +--[[smcv]] + +I've updated smcvpostcomment and publicised it as [[plugins/contrib/comments]]. --[[smcv]] + +> While there is still room for improvement and entirely other approaches, +> I am calling this done since smcv's comments plugin is ready. --[[Joey]] + +[[done]] |