Update 07-advanced.md, document isAbsolute for $get

[Lockyc]

Added missing documentation of $get function. Found the solution in #4843 by @danharrin

Description

I was having difficulty accessing property values which I was unable to resolve until I stumbled across @danharrin's solution. I had come across the isAbsolute property, but i did not realise it was the absolute path of the Livewire component.

I have added the information @danharrin provided with a code example in the appropriate section of the Advanced Forms page.

Visual changes

Functional changes

• Code style has been fixed by running the composer cs command.
• Changes have been tested to not break existing functionality.
• Documentation is up-to-date.

[danharrin]

Thanks! Going to keep this out of the documentation still though, as it's tricky to explain how to find the correct absolute path (do you choose data or mountedActionData or something else)? I think it might cause more confusion than it's worth, and I want to encourage users to use ../../ to traverse the state paths instead. Maybe it will get simpler in the future.

[Lockyc]

👍 ok no worries, I figured that might be the case.
I hoped it would just help the next person find the solution and figure it out with some troubleshooting.

I only found the ../../ traversal pattern after this pr.
Its documented in the Repeater documentation, not with the rest of the $get documentation.
I'm not sure it would have solved my problem anyway.