Module development and code questions

Hello there,

I need some help related to php. I have connected my DB with frontend web application through PHP. But I have a little bit problem with it. I want to fetch specific record from the database. Can anyone guide me how can I do it. I will appreciate your suggestions.

Thanks in advance.

Regards: [ link spam redacted]

What's going on with the Devel module? I frequently get the following: (In this case I was executing dpm($variables); in a theme_preprocess_menu function but this happens in other situations too.)

The website encountered an unexpected error. Please try again later.
Error: Class "Doctrine\Common\Util\Debug" not found in Drupal\devel\Plugin\Devel\Dumper\DoctrineDebug->export() (line 25 of modules/contrib/devel/src/Plugin/Devel/Dumper/DoctrineDebug.php). 

Hello,

I'm quite new in Drupal environment, sorry beforehand in case I'm asking something obviuos.

I have the scenary where I need to get some info from related entities. What I have seen so far is to construct an array of nodes id and then getting the specific fields. In some cases that is not really efficient.

Is this the only way to do it? Is there any way to "Query join entities getting field values"?.

Scenario example:

Entity1     Entity2    Entitiy3

E1Field1   E2Field1  E3Field1

E1Field2   E2Field2  E3Field2

I have a simple tableselect element inside my form and the tableselect rows are populated using a pager as follows:

Upgrading from Drupal 8.9 to Drupal 9.2.7 and I've run into an issue with a custom module that was created by a past developer.  The error has to do with valid_email_address.  I see that it was deprecated and then removed according to this link (https://api.drupal.org/api/drupal/core%21includes%21common.inc/function/valid_email_address/8.8.x)

Hi All,

I was wondering if anyone has the react_social code. it is no longer available on github.

Thanks in advance.