Module development and code questions

I have a form with with a referrer field

    $referrer = $_SERVER['HTTP_REFERER'];
    $form['my_referrer'] = [
      '#type' => 'hidden',
      '#value' => $referrer,
    ];

I am submitting the form using ajax.

On ajax handler when I am checking the content of the field using

Hi. I have an SMS plugin which I need to test, but I can't get it to work with any version of Drupal. This is inherited code which isn't going to ultimately be used with Drupal, but I want to test what the prev developer was doing, so I can move forward with the project. I realize this is an unusual topic, but any assistance is greatly appreciated. This is the complete code for the single .php file, which I assume will present a simple page to interact w/ the SMS API for Twilio. 

I desire that if I wrap a node's text in WYSIWYG editor with 4 brackets ([[TEXT]]) this text will be backendly parsed as a link to a node with an alias identical to that text, or, with an H1 identical to that text.

What should be simpler, to instruct the system to search and link for a URL with an identical node alias matching the text or to instruct the system to search and link for a node with an H1 matching the text?

Hi guys i was looking how to get the price of the products.

Im working in a mudule that show the price of the product page in a block.

In commerce documentaton i get this information about how to get product attributes so i try to use this:

$price_attribute = \Drupal\commerce_product\Entity\ProductAttribute::load('price');

And after i try this:

$variation_type = \Drupal\commerce_product\Entity\ProductVariationType::load('price');

In both case i get a null value.

Hello,

I built a custom module with three different GET rest resources. One of the three endpoints provides a list of library items, wich contains files in each entry. I can access the whole list in my Ionic App but when i try to access a file e.g. "https://islandora.traefik.me//sites/default/files/2022-02/pdf-test1 2.pdf" i get the following cors error:

I have a select linked to an entity reference
I select this in a callBack after choosing an employee, displaying only the nodes that the Employee can choose
The management and the filter work well, with the only exception that it does not allow me to save.
Checking the code I noticed that before the customization the array is composed by the ID and then by the description, under the Scren Shot
S.S.
The code to load the affected nodes is this