Anúncios

Inserir anúncios ou outros banners podem ser úteis para wikis, especialmente para pequenas wikis que precisam de anúncios para gerar dinheiro para compensar gastos com servidores. Colocar anúncios pode ser desafiador para usuários que nunca tiveram conhecimento do MediaWiki. Alguns dos desafios podem incluir:

• Necessário de encontrar uma maneira de colocar o anúncio em todas as páginas da wiki – adicionar o código manualmente em cada página, o que é possivel com um modelo, que pode não ser muito eficaz.
• Considerações de segurança – Algumas tags HTML e JavaScript não podem ser adicionadas nas páginas, impedindo que o código seja colado em páginas únicas ou no site notice. Disponibilizar essa funcionalidade é muito perigoso e vai resultar no seu website ser hackeado.
• Manter o código em um local apropriado – Alguém com conhecimento do MediaWiki HTML pode adicionar um banner ao arquivo PHP de skin relevante, mas ele vai ser destruido durante todas as atualizações. Também pode ser difícil para alguém saber onde colocar o código.

Scripts e extensões para colocar anúncios

• Category:Advertising extensions

Adicionar banners a skins em locais diferentes do site notice

Todas as skins modernas suportam a adição de banners na barra de baixo e abaixo do skin usando o SkinAfterPortlet (desde MW 1.35) e o SkinAfterContent hooks. Nenhuma extensão ou skin especial pode ser necessária.

	public function onSkinAfterPortlet( $skin, $portletName, &$html ) {
		$key1 = 'AD1'; // <== Place this key in the MediaWiki:Sidebar
		$key2 = 'AD2'; // <== Place this key in the MediaWiki:Sidebar
		$html_snippet1 = '<div style="">Potential banner location.</div>';
		$html_snippet2 = '<div style="">Potential banner location.</div>';
		$sidebar_elements = [];
		$sidebar_elements[$key1] = $html_snippet1;
		$sidebar_elements[$key2] = $html_snippet2;

		if ( array_key_exists( $portletName, $sidebar_elements ) ) {
			$element = $sidebar_elements[$portletName];
			if ( !empty( $element ) ) {
				$html = $element;
				return true;
			}
		}
	}

	public function onSkinAfterContent( &$data, $skin ) {
		$data .= '<div style="">Potential banner location on the bottom.</div>';
	}

The following information is outdated. The collapsible feature has been removed from the Vector skin. The collapsible navigation portals are now provided by the CollapsibleVector extension which will have to be installed additionally.

• https://gist.github.com/Inquisitor-Sasha/6759008

  One of the problems with placing advertising in the Vector sidebar is that the sections are collapsible, meaning that many visitors will not see advertisements if they are not properly put it. The problem is that locking a sidebar section open requires technical server side scripting that some users might not want to do. This script places the code of the banner above the title of the section, and displays whether or not the section is expanded.

  To use this script, add it to the MediaWiki:Vector.js page and change the referenced ID of the sidebar section to the ID of the section where you want to add the banner.

---

Howto

There are a number of existing advertisement extensions for MediaWiki that may serve as examples of how it can be done.

There are a few different ways to inject ad banners into a MediaWiki skin:

• Edit the skin template itself (e.g. skins/Vector.php for the Vector skin) and add the banner code in a suitable location. This is a fairly quick and easy solution, but suffers from the problem that you'll need to redo it every time you upgrade MediaWiki (or upgrade your skin, if you're using a non-standard one).
• Find a suitable hook to inject the banner code into the skin. If you're just doing this for your own wiki, you can simply write the hook code directly into your LocalSettings.php (or into a separate PHP file that you include from there, if you prefer), but you could also turn it into a full MediaWiki extension (which basically just means, at a minimum, putting it in a separate file and adding a bit of boilerplate code).
• Alas, finding the right hook for the job may not always be trivial. For injecting ads into the sidebar, the SkinBuildSidebar hook may be convenient; SkinAfterContent might work for footer ads, and for top ads, you could maybe (ab)use the SiteNoticeAfter hook.
• Create a parser tag extension that allows you to add a custom tag like ‎<adshere /> to your pages to inject the ad banner code at that location. Straightforward, but requires you put the tag on any page that you want ads on (or in an interface message, if you can find a suitable one; tip: try appending the parameter uselang=qqx to URLs to see which messages are used where).
• Find a suitably located interface message which is treated as raw HTML, and put your ad code there directly. Alas, there aren't many such messages, and the trend is towards getting rid of the few that are left.
• For ads that can be injected with JavaScript only, you can simply put the code in MediaWiki:Common.js (or in the appropriate skin-specific JS page).