Lesson 08: Lesson #08 - Node Access & db_rewrite_sql

Update: Now with VictorKane's awesome Class Notes!

This lesson provides an introduction to Drupal's node access system. Initially, we'll create a basic module that uses hook_db_rewrite_sql() to implement a node access restriction system.

Once the concepts are grasped we'll lift the hood on some other Drupal access control modules and see how these work using Drupal's built-in node_grant abilities.

There were 75 participants in IRC and 50 people in the skypecast today.

Basic Node Access Control

• Create a basic module that restricts access to anonymous users but allows access for authenticated users on certain nodes.
• Our personal access table and pre-populating it (for demonstration purposes).
• hook_form_alter() to add a checkbox to the node edit form.
• hook_nodeapi() to create a flag on the node and apply viewing access control.
• hook_db_rewrite_sql() to implement the list view access control.

Hook_perm walkthrough

Dmitri gives us an insight into how hook_perm works - it's easier than you think, and a vital part of permissions control.

Thanks again to Dipen for the lesson notes!