Using imagecache with the Image or Embedded Media Field modules

Actually, there is a way to use imagecache presets with the image module without patches. It involves creating a View that manually applies the imagecache preset to the image field (not imagefield). You'll need views customfield.

Create a view and add the relationships "Image:File" and "Image:Node." Then add fields "File:path," "Node->title," and "Customfield: PHP Code." Add this to your php customfield script:

Drupal: Add body classes based on user permissions

This one is a little bit more esoteric. I found the need change the page style (via CSS) based on whether the current user had permission to update the current node. Drupal preprocess_page to the rescue!

Just add this snippet to the yourTheme_preprocess_page function in your template.php file. It will add body classes (e.g., user-node-update, user-node-delete) to your page depending on the current user's permission to access the node being viewed.

Escape Views' replacement patterns

Views replacement patterns are great, but they take up valuable variable real-estate. If you need to literally output "[nid]" rather than the value of its corresponding replacement pattern, you might start hitting your head against the wall.

I found this issue to be particularly annoying when using the Prepopulate module, which required CCK field names (with bracketed arrays) to a URL.

Add a Drupal template suggestion for Panels: page-panel.tpl.php

Drupal has a standard array of template suggestions that let you specify which TPL file should be used according to node type, node id, etc. However, there is no default template suggestion for pages generated by Panels.

You can easily fix that by adding a little snippet to your template.php files' preprocess_page() function.