Drupal 8: Writing secure code

Whether you are writing a PHP snippet or an entire module, it is important to keep your code secure.

How to fix "The following module is missing from the file system"

This warning is new in Drupal since 7.38 (@todo). It is caused by a wrong module_load_include/drupal_get_path/drupal_get_filename or any other module (in)directly calling drupal_get_filename without checking if the module exists with module_exists.

The warning can also be caused by a wrong record in the system table of Drupal. This wrong record can be caused by removing a module without uninstalling it.

Functions - In Twig Templates


The url and path function are defined in close parallel to those found in \Symfony\Bridge\Twig\Extension\RoutingExtension







// This function will receive a renderable array, if an array is detected.
render_var(), for internal use don't use.

How to use Validate Data Module

The purpose of the "Validate Data" module is allow the developer to add a validation test to any field available on a node or webform. This function is not attached to the node so you can use the same "validators" on different fields and on different nodes. You have the option of selecting one or more jQuery Validator and/or a PHP Validator on any one field.


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