Fine tune node permissions

The default CRUD + view operations on nodes can be fine tuned by using

  1. /**
  2.  * Implements hook_menu_alter().
  3.  */
  4. function mymodule_menu_alter(&$items) {
  5.   $items['node/%node/edit']['access callback'] = '_mymodule_node_edit_form_access';
  6.   $items['node/%node/edit']['access arguments'] = array(1);
  7. }
  8.  
  9. function _mymodule_node_edit_form_access($node) {
  10.   $type = is_string($node) ? $node : $node->type;
  11.   if ($type == 'webform') {
  12.     // Do some additional checks.
  13.       return FALSE;
  14.     }
  15.   }
  16.   // Otherwise use the default access rules.
  17.   return node_access('edit', $node);
  18. }

Note that this can be achieved in some cases by simply using hook_node_access() ...

override a default .tpl.php file in a custom module

to basically use a template file in a custom module use the hook_theme_registry_alter(&$theme_registry) like this

Testing date fields: strtotime tips

Unit testing the creation of a node with a date field could fail because of wrong interpretation of the date by strtotime function

Enable block

There is no available API to programmatically set a block. Like Drupal core does, we have to use db directly.

simpletest: count checkboxes checked

Sometimes it is useful to know exactly the amount of options enabled with a xpath expression

Add a conditional stylesheet for IE

the options of drupal_add_css allow the use of conditional stylesheets

debug drush (and php-cli)

Drush uses the cli version of php so traditional debugging tools and functions don't work.

Create an image style

to create in code, programmatically an image style (previously called image cache preset)

Current path alias

to get the current page alias path use

Unset core stylesheet in a custom theme

by using use hook_css_alter() in template.php

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