[[!meta title="Option disp for pagestats directive"]]

[[!toggle id=old text="Old, outdated, monologue"]]

[[!toggleable id=old text="""
Hello,    
here is a proposal to add a new option to [[ikiwiki/directive]]
[[ikiwiki/directive/pagestats]] (from plugin [[plugins/pagestats]]).

This adds global option `pagestats_linktext` (and directive option `linktext`) to specify whether directive `pagestats` should use the page name or the [[title|ikiwiki/directive/meta]] of tags.

Here is a [[patch]], for both code and documentation.

    diff --git a/IkiWiki/Plugin/pagestats.pm b/IkiWiki/Plugin/pagestats.pm
    index 17b26f7..a65fd7a 100644
    --- a/IkiWiki/Plugin/pagestats.pm
    +++ b/IkiWiki/Plugin/pagestats.pm
    @@ -29,11 +29,31 @@ sub getsetup () {
     			rebuild => undef,
     			section => "widget",
     		},
    +		pagestats_linktext => {
    +			type => "string",
    +			example => "title",
    +			description => "Set link text to be whether page title (page) or meta title (title).",
    +			safe => 1,
    +			rebuild => 1,
    +		},
    +}
    +
    +sub linktext ($$) {
    +	# Return the text of the link to a tag, depending on option linktext.
    +	use Data::Dumper;
    +	my $page = $_[0];
    +	my $linktype = $_[1];
    +	if (($linktype eq "title") and (exists $pagestate{$page}{meta}{title})) {
    +		return $pagestate{$page}{meta}{title};
    +	} else {
    +		return undef;
    +	}
     }
     
     sub preprocess (@) {
     	my %params=@_;
     	$params{pages}="*" unless defined $params{pages};
    +	$params{linktext} = $config{pagestats_linktext} unless defined $params{linktext};
     	my $style = ($params{style} or 'cloud');
     	
     	my %counts;
    @@ -78,7 +98,7 @@ sub preprocess (@) {
     		return "<table class='".(exists $params{class} ? $params{class} : "pageStats")."'>\n".
     			join("\n", map {
     				"<tr><td>".
    -				htmllink($params{page}, $params{destpage}, $_, noimageinline => 1).
    +				htmllink($params{page}, $params{destpage}, $_, noimageinline => 1, linktext => linktext($_, $params{linktext})).
     				"</td><td>".$counts{$_}."</td></tr>"
     			}
     			sort { $counts{$b} <=> $counts{$a} } keys %counts).
    @@ -101,8 +121,8 @@ sub preprocess (@) {
     			
     			$res.="<li>" if $style eq 'list';
     			$res .= "<span class=\"$class\">".
    -			        htmllink($params{page}, $params{destpage}, $page).
    -			        "</span>\n";
    +							htmllink($params{page}, $params{destpage}, $page, linktext => linktext($page, $params{linktext})).
    +							"</span>\n";
     			$res.="</li>" if $style eq 'list';
     
     		}
    diff --git a/doc/ikiwiki/directive/pagestats.mdwn b/doc/ikiwiki/directive/pagestats.mdwn
    index 8d904f5..56970e6 100644
    --- a/doc/ikiwiki/directive/pagestats.mdwn
    +++ b/doc/ikiwiki/directive/pagestats.mdwn
    @@ -37,4 +37,6 @@ links:
     The optional `class` parameter can be used to control the class
     of the generated tag cloud `div` or page stats `table`.
     
    +The optional `linktext` parameter can be used to control the text that is displayed for each tag. It can be `page` (the name of the page is used) or `title` (the title, according to the [[ikiwiki/directive/meta]] [[ikiwiki/directive]], is used). This option can be set globally in the setup using option `pagestats_linktext`; default is `page`.
    +
     [[!meta robots="noindex, follow"]]
    diff --git a/doc/plugins/pagestats.mdwn b/doc/plugins/pagestats.mdwn
    index 347e39a..6a72a9a 100644
    --- a/doc/plugins/pagestats.mdwn
    +++ b/doc/plugins/pagestats.mdwn
    @@ -4,3 +4,7 @@
     This plugin provides the [[ikiwiki/directive/pagestats]]
     [[ikiwiki/directive]], which can generate stats about how pages link to
     each other, or display a tag cloud.
    +
    +Their is one global option for the setup file:
    +
    +* `pagestats_linktext` controls the text that is displayed for each tag. If `page` (the default), the name of the page is used; if `title`, its title (according to the [[ikiwiki/directive/meta]] [[ikiwiki/directive]]) is used.

-- [[Louis|spalax]]

> Hello,    
> do not accept my patch: it is an ugly hack that works for me, but its too narrow to be merged in IkiWiki:
> 
>   - it assumes the [[ikiwiki/directive/pagestats]] directive only deals with tags, which is wrong;
>   - such a feature (allowing displaying tags using their title), if enabled, should be enabled for the [[plugins/tag]] plugin (and maybe other plugins [[I have in mind|users/spalax]]) as well.
> 
> I cannot manage to find a solution to my problem that suits me.
> 
> # My problem
> 
> On two sites I maintain using IkiWiki, I have tags that:
> 
> - have special characters in it (like [[·|http://en.wikipedia.org/wiki/Interpunct]]) that generate ugly URLs;
> - have subtags (e.g. `math/calculus`, `math/algebra`, `physics/mechanic` etc.).
> 
> That is, having [[ikiwiki/directive/taglink]] or [[ikiwiki/directive/pagestats]] displaying tags using the pagename (that is something derived from the basename of the URL) is not sufficient for me. I would like to be able to display them using their title, their full name (from the `tagbase` parameter), or both.
> 
> # Solution?
> 
> A solution would be to provide a `tagtext` config option, set to one of `page` (use pagename), `title` (use [[ikiwiki/directive/meta]] title), `path` (use path, since the tagbase), `pathtitle` (use path, and use title for each of the subtags); or a boolean `display_tagtitle` and `display_tagpath`, which would handle the way tags are displayed.
> 
> I see at least two drawbacks to this solution:
> 
> - I do not know what would be the default of these options, not to break backward compatibility: [[ikiwiki/directive/taglink]] would suggest `page`, whereas the footer would suggest `path`.
> - The [[ikiwiki/directive/pagestats]] directive would need an optional boolean parameter `tag`, to specify whether to use these options or not.
> 
> # *My* problem ?
> 
> I actually wonder if someone else also have this problem: as far as I can see on other sites using IkiWiki and tags, I would not be surprised if others are satisfyed with the current way tags are displayed: I do not remember having seen subtags, or tags in non-English language with weird characters in them.
> 
> So, I wonder whether this discussion would benefit IkiWiki, or if I should just go on with my hack (or maybe a plugin, but I think it would be quite difficult to do, given that the very same function is used to display tags and to uniquely identify them).
> 
> -- [[Louis|spalax]]
"""]]

I eventually managed to get something that suits me, for the problem described above (I want [[ikiwiki/directive/pagestats]] directive to display [[title|ikiwiki/directive/meta]] rather than page name).

Here is a [[patch]] that adds an option `disp` for the [[ikiwiki/directive/pagestats]], acting exactly the same as option `show` for the [[ikiwiki/directive/map]] directive (but parameter `show` was already used for something else). That is, if one wants its tags displayed using their [[title|ikiwiki/directive/meta]] rather than their page name, she can use param `disp`, is in:

    \[[!pagestats  pages="tags/*" disp=title]]

[[!toggle id=patch text="Patch"]]
[[!toggleable id=patch text="""
    diff --git a/IkiWiki/Plugin/pagestats.pm b/IkiWiki/Plugin/pagestats.pm
    index 17b26f7..8a5e100 100644
    --- a/IkiWiki/Plugin/pagestats.pm
    +++ b/IkiWiki/Plugin/pagestats.pm
    @@ -31,6 +31,19 @@ sub getsetup () {
     		},
     }
     
    +sub linktext ($%) {
    +	# Return the text of the link to a tag, depending on option linktext.
    +	my ($page, %params) = @_;
    +  if (exists $params{disp} && 
    +      exists $pagestate{$page} &&
    +      exists $pagestate{$page}{meta}{$params{disp}}) {
    +    return $pagestate{$page}{meta}{$params{disp}};
    +  }
    +  else {
    +    return undef;
    +  }
    +}
    +
     sub preprocess (@) {
     	my %params=@_;
     	$params{pages}="*" unless defined $params{pages};
    @@ -78,7 +91,7 @@ sub preprocess (@) {
     		return "<table class='".(exists $params{class} ? $params{class} : "pageStats")."'>\n".
     			join("\n", map {
     				"<tr><td>".
    -				htmllink($params{page}, $params{destpage}, $_, noimageinline => 1).
    +				htmllink($params{page}, $params{destpage}, $_, noimageinline => 1, linktext => linktext($_, %params)).
     				"</td><td>".$counts{$_}."</td></tr>"
     			}
     			sort { $counts{$b} <=> $counts{$a} } keys %counts).
    @@ -101,7 +114,7 @@ sub preprocess (@) {
     			
     			$res.="<li>" if $style eq 'list';
     			$res .= "<span class=\"$class\">".
    -			        htmllink($params{page}, $params{destpage}, $page).
    +							htmllink($params{page}, $params{destpage}, $page, linktext => linktext($page, %params)).
     			        "</span>\n";
     			$res.="</li>" if $style eq 'list';
 
"""]]

Regards,  
-- [[Louis|spalax]]

> Saved to my git repository as `contrib/spalax/pagestats-disp`.
> I'd rather find a better name than `disp` for the parameter.
> I think `display` would be an improvement, but that doesn't solve the
> problem of "it's a synonym for show, and non-obvious which is which".
> Maybe `linktext`?
> 
> It's unfortunate that `map` and `pagestats` have different meanings for
> the `show` parameter. I'm tempted to propose a patch that adds something
> like `limit` (by analogy with SQL) or `max` as the canonical name for the
> "number of things to match" parameter, at which point a non-numeric
> `show` could mean this thing. --[[smcv]]

>> [[!template id=gitbranch branch=smcv/pagestats-show
author="[[Louis|spalax]], [[smcv]]"
browse=http://git.pseudorandom.co.uk/smcv/ikiwiki.git/shortlog/refs/heads/pagestats-show]]
>> Here's a branch. It depends on my `ready/limit` branch
>> from [[todo/pick a new canonical name for equivalent of SQL limit]].
>> --[[smcv]]