Feb 212017
 

Introduction

Delighted

hook_schema is one of those methods where you are happy to have a usable documentation on the api website. It is pretty much self-explanatory and you don’t have to look for hours on third parties websites to get some usable information. 🙂

  • hook_schema on api.drupal.org and don’t forget to select your Drupal version!
  • $DRUPAL_ROOT\core\lib\Drupal\Core\Database\database.api.php: another file which describes the Database API array structure!
  • Schema Reference on drupal.org for D7. Yeah, there is no D8 version of the docs… Hopefully, nothing has changed between D7 and D8.

After some research, I found the files which are responsible for schema to SQL statement conversion:

File location Method name
$DRUPAL_ROOT\core\includes\schema.inc drupal_install_schema (8.2.x)
$DRUPAL_ROOT\core\includes\database.inc (deprecated) db_create_table (8.2.x) (deprecated)
$DRUPAL_ROOT\core\lib\Drupal\Core\Database\Schema.php protected createTable (8.2.x)
$DRUPAL_ROOT\core\lib\Drupal\Core\Database\Driver\{mysql,sqlite,pgsql}\Schema.php
$DRUPAL_ROOT\core\lib\Drupal\Core\Database\Driver\{mysql,sqlite,pgsql}\Schema.php

The code

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