76 lines
2.2 KiB
Markdown
76 lines
2.2 KiB
Markdown
[[!meta title="Cannot manage to inject preprocess_tag"]]
|
|
|
|
Hello,
|
|
I am trying to write a plugin that changes the way the
|
|
[[ikiwiki/directive/tag]] [[ikiwiki/directive]] works, and I am trying to do so
|
|
by using the [[inject|plugins/write/#index81h3]] function. The piece of code
|
|
that should (if I understood well the `inject` function) do the trick is :
|
|
|
|
sub import {
|
|
inject(
|
|
name => 'IkiWiki::Plugin::tag::preprocess_tag',
|
|
call => \&my_preprocess_tag
|
|
);
|
|
}
|
|
|
|
Howere, this does not change anything about the effect of the `tag` directive.
|
|
|
|
I have tried some variants, like calling `inject` outside the `import`
|
|
function, or calling `IkiWiki::loadplugin("tag");` to ensure that the
|
|
[[plugins/tag]] is loaded, but none of these things work. Any idea?
|
|
|
|
*Disclaimer:* although proficient in several languages, I am a beginner in Perl.
|
|
|
|
Here is the full code of (a very early version of) my plugin.
|
|
|
|
#! /usr/bin/perl
|
|
require 5.002;
|
|
package IkiWiki::Plugin::parenttag;
|
|
|
|
use warnings;
|
|
use strict;
|
|
use IkiWiki 3.00;
|
|
|
|
my $orig_preprocess_tag=\&preprocess_tag;
|
|
|
|
sub import {
|
|
inject(
|
|
name => 'IkiWiki::Plugin::tag::preprocess_tag',
|
|
call => \&my_preprocess_tag
|
|
);
|
|
}
|
|
|
|
sub my_preprocess_tag(@) {
|
|
print "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nWorking!\n";
|
|
return "TODO";
|
|
}
|
|
|
|
1
|
|
|
|
-- [[Louis|spalax]]
|
|
|
|
> Hello,
|
|
> I managed to replace the tag original `preprocess_tag` function, using a different approach than using `inject`:
|
|
>
|
|
> my $orig_preprocess_tag;
|
|
>
|
|
> sub import {
|
|
> IkiWiki::loadplugin("tag");
|
|
> $orig_preprocess_tag = \&{$IkiWiki::hooks{preprocess}{tag}{call}};
|
|
> hook(type => "preprocess", id => "tag", call => \&my_preprocess_tag);
|
|
> }
|
|
>
|
|
> And later on, I can call the original `preprocess_tag` function using:
|
|
>
|
|
> $orig_preprocess_tag->(...)
|
|
>
|
|
> The problem is that I am digging into `IkiWiki.pm` package to extract data from `IkiWiki::hooks`, which is not guaranteed to work in the future, contrary to `inject`.
|
|
>
|
|
> Two questions:
|
|
>
|
|
> - how ugly is my solution?
|
|
> - is it possible to use `inject` to replace the `IkiWiki::Plugin::tag::preprocess_tag` function?
|
|
>
|
|
> -- [[Louis|spalax]]
|
|
|