Image "likes"

[Sabir]

Hello.

I want implement image "likes" system. I want to use built-in description field to store values (because client needs opportunity to change values by himself). 

I have one problem - how change image description with ajax request? 

For example, I send request via jQuery to file likes.php

<php
include "./index.php";

$gal_page = $wire->pages->get(1188);

//I don't know how can I pass image id or something similar and then select this image
$image_id = $wire->input->get("img_id");

//set OF false
$gal_page->of(false);

//I know that there isn't such method, just for example
$gal_page->images->eq($image_id)->description = "34512";

$gal_page->save();
?>

As you see from code comments, my main problem is saving image id or something else and finding image by this info.

Have you any ideas, how can I implement this?

[Soma]

The file name is the key.

$gal_page->images->get("myjpg.jpg")->description = "34512";

[Sabir]

Soma, thank you very much!)