how to convert the jsp script to slightly. Also where can i get the slightly full documentation for the available tags usage - aem

Question

How to convert the <% String rootpath =currentPage.getAbsoluteParent(3).getPath(); %> code into the SLIGHTLY tag for printing the rootpath value.
Example i can get the currentpage children by using <ul data-sly-list.first="${currentPage.listChildren}">
<li>${child.title}</li>
</ul>
Also where can i get the slightly full documentation for the available tags usage ?

Answer 1

In short, it is not possible.
Sightly is more of a templating language and all your business logic should be achieved either through a Java or Javascript Use API.
To achieve this, you can either use a JS Use API (a simplest example shown below,a file named helper.js residing in the same directory as my sightly HTML).
use(function () {
return {
rootPath: currentPage.getAbsoluteParent(2).getPath()
};
});
And then you can use this in your sightly file as shown below.
<div data-sly-use.helper="helper.js">
${helper.rootPath}
</div>
And additionally, your example list wouldn't run because you have created an object first whereas you are referring to child within the list. It should be
<ul data-sly-list.child="${currentPage.listChildren}">
<li>${child.title}</li>
</ul>
The full documentation of Sightly can be found here. You can get the introduction to Sightly through this experience delivers blogs. The entire Sightly specification can be found here.