[Pmwiki-users] Preventing "comment spam"
Patrick R. Michaud
pmichaud at pobox.com
Mon Jan 31 08:55:52 CST 2005
On Mon, Jan 31, 2005 at 11:20:32AM +0000, Hans wrote:
> Wednesday, January 19, 2005, 5:32:31 PM, Patrick wrote:
> > 1. rel="nofollow" for all external links (new default for beta20)
> > $UrlLinkFmt =
> > "<a class='urllink' href='\$LinkUrl' rel='nofollow'>\$LinkText</a>";
> > 2. rel="nofollow" for unapproved external links only
> > $UnapprovedLinkFmt =
> > "<a class='apprlink' href='\$LinkUrl' rel='nofollow'>\$LinkText</a>";
> > 3. no rel="nofollow" at all (default for beta19 and earlier)
> > $UrlLinkFmt =
> > "<a class='urllink' href='\$LinkUrl'>\$LinkText</a>";
> > 4. not linking unapproved external links at all
> > $UnapprovedLinkFmt = "\$LinkText";
> [..]
> If one has urlapproval implemented via
> include_once('scripts/urlapprove.php');
> then an unapproved link is not really a link, it is only followed by
> an "approve sites" link, which will trigger action=approvesites.
> So what is the point of $UnapprovedLinkFmt?
If one has url approvals implemented via
include_once('scripts/urlapprove.php'), then unapproved links
are generated using $UnapprovedLinkFmt instead of $UrlLinkFmt.
By default $UnapprovedLinkFmt is set to display the "approve sites"
link, but this isn't a requirement -- a site administrator could
easily set it for a different policy.
One policy (#4 above) would be to disallow unapproved links entirely, by
setting $UnapprovedLinkFmt = "\$LinkText". The url would still display
in the output, but not be a link until someone (manually) added the url's
site to the Main.ApprovedUrls page.
Another policy (#2 above) would be to have unapproved links displayed as
links with the rel='nofollow' attribute, and approved links displayed as links
without rel='nofollow'. Thus:
include_once('scripts/urlapprove.php');
$UnapprovedLinkFmt = "<a rel='nofollow' class='unapprovedlink'
href='\$LinkUrl'>\$LinkText</a>";
$UrlLinkFmt = "<a class='urllink' href='\$LinkUrl'>\$LinkText</a>";
Again, links would appear as unapproved links until someone manually
added a site to the Main.ApprovedUrls page.
The point is that almost any desired policy can be obtained via judicious
settings of $UnapprovedLinkFmt and $UrlLinkFmt.
> It seems to me that if I have urlapproval implemented and I wish to
> have search bots follow the url links then I need to add to config.php
> point 3:
> $UrlLinkFmt = "<a class='urllink' href='\$LinkUrl'>\$LinkText</a>";
> the pre-beta 20 default.
Yes, this is correct -- sorry if I missed that point.
Pm
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