Module development and code questions

Hello,

I have a question. I would appreciate your answer.

How should I provide data to my service correctly? For example in submitForm:

$this->session->set('var1', $name);
$this->session->set('var2', $count);
$form_state->setRedirect('test.task');

Then I have service where I want access the data from session and save in database. Should I read data from session in controller and pass to service by parameter? I guess no but I don't have any other idea. Regards :)

Dear community

I need some help understading why my website is slow (TTFB), I have installed devel module and I can see that for some reason the semaphore table takes a lot of time deleting/inserting records. As I understand this is part of Drupal core but why is it that slow ? 

What can I do to sort this out ?

Hi, I'm creating a series of scripts to programmatically apply durpal coding standards, for "normal" files I've used phpcbf --standard=Drupal and for JS files I've used eslint, which is integrated in drupal's core. Is there any tool to fix the coding errors of twig's templates?

I am creating a custom field widget where a user can click a button and edit some fields in a form inside a dialog modal.

Opening the modal works fine, but I cannot seem to make any buttons inside the modal form react to anything I throw at it.

In the below example, when clicking the "submit" inside the modal form, the "submitAjax" function is not executed, and I receive a standard AjaxResponse in my network debugger. I've tried using different class names "use-ajax" and "use-ajax-submit", I also tied without any.

I have an "entity_reference" field which displays an "entity_autocomplete" form field.

I would like the user to select only one value.

The problem is that the field allows the user to enter multiple values (separated by commas), even though I set the field cardinality to 1 and "Tags" is false by default.

Code:

I need to connect to another database and am planning to use Views Database Connector module to display content from that second database. The second database is a SQL Server View. I configured settings.php to connect to that database but it's not seeing the tables. For testing to make sure my code was working, I connected to another mysql database in a separate server and it worked fine and was able to see the tables from that database through Views Database Connector.

Because this is a View in SQL, do i need additional settings in my configuration?