Make your plugin compatible to Admidio 5

Admidio 5 uses Bootstrap 5. So therefore you have to convert your Bootstrap customizations to Bootstrap 5. View Migration document of Bootstrap 5.

The entry list of the parameter $options has changed. The entry helpTextIdInline is replaced by the existing entry helpTextId.

Within the scripts groups-roles/lists_show.php and groups-roles/mylist.php the parameterrol_ids was replaced by role_list. With the name changed also the content of the parameter has changed. The old parameter expects a comma separated list of role IDs e.g. 3,5,7, the new parameter expects a comma separated list of role UUIDs e.g. 006bd130-34d4-4b86-9e82-b1464ad60a0b,1525af50-1b2b-45ce-8a07-35b0b1eb5a5e,56920e00-761c-495a-b43d-082eda94a145

Admidio 5 now use the icon set of bootstrap https://icons.getbootstrap.com/ . Therefore you need to change all icons in your plugin. Search in your html code for icons like fa fas-iconname and replace it with an icon from bootstrap like bi bi-iconname .

Admidio 5 starts to use namespaces. Therefore some changes in your scripts are neccessary:
Instead of Language::translateIfTranslationStrId() use Admidio\Infrastructure\Language::translateIfTranslationStrId()
Instead of Language::isTranslationStringId() use Admidio\Infrastructure\Language::isTranslationStringId()

If you have used the class TableAccess then you must now use the Entity class which has the same methods but another name and uses namespaces. So your existing code like

$myDatabaseObject = new TableAccess($gDb, 'adm_my_table', 'myt');

must now look like this:

use Admidio\Infrastructure\Entity\Entity;
 
$myDatabaseObject = new Entity($gDb, 'adm_my_table', 'myt');

If you have used several classes of Admidio like SecurityUtils you must now integrate the following line at the top of your file

use Admidio\Infrastructure\Utils\StringUtils;

The following methods have changed their names for better understanding about the functions of that method:
Users::manageRoles() changes to Users::isAdministratorRoles()
Users::assignRoles() changes to Users::isAdministratorRoles()
Users::editUsers() changes to Users::isAdministratorUsers()