Module development and code questions

Hi , i have content type named: "exams_and_assignments" and a field named: "field_exams_assignments_files"

i want to give permission to all teachers to add files to the node, but prevent them to edit other's uploaded files.

so, i made a custom module to disable field values in dispaly form : 

Hello,

I need to share sessions table between 2 sites (same domain, eg. .mysite.com). In drupal 7, i have already build this in settings.php.

I have created a new database for this.

On drupal 10/11, this seems different, because we cannot achieve this on the database definition in the settings.php. But maybe that's a mistake.

Should I use another method, create a custom service for this?

Thanks for your help.

Hi there,

Could someone please guide me on how to validate forms within an iframe? Specifically, I am working with forms such as:

"entity-browser-browse-files-modal-form"
"entity-browser-browse-files-form"

function hook_form_alter(&$form, &$form_state, $form_id) {
 // Add Custom validation
}

I would appreciate any advice or examples on how to properly handle form validation inside an iframe context.

Thank you in advance for your help!

Hello all!  While developing our Drupal site, we have set up some additional custom roles and assigned permissions to these roles.  As developers, we configure these incrementally and test on our development environment. Once this is tested and working, what is the best way to transfer all these custom roles and assigned permissions to test and production environments, such that the site administrators do not need to go into the Drupal administration page manually to re-configure and assign all these custom roles and assigned permissions? Should I build some custom module to handle this?

I am building a custom multi-step form with back/forward buttons. 

When a user clicks 'next' it saves the current steps values in form storage like this:
 

$storage['values'][$this->step] = $form_state->getValues();
$form_state->setStorage($storage);

When the user clicks 'Back', I am pulling the values out of storage and setting them to $form_state->setUserInput(); like this:
 

I am developping a custom module  that sends notifications.

The sending  service is more or less as follows