Drupal 7

Have you ever had to sort a view of nodes by a referenced taxonomy term?  In our system, each staff member is entered as a separate node, containing the staff member's name, position and email address, and also containing the department the staff member works in.  The department is a taxonomy reference field.  We then have a view that pulls in each staff member's node, organized by department, and the departments are listed alphabetically.

If you are familiar with the Drupal Redirect module, you know it can be a convenient way of creating redirects from URLs that don't really exist.  For example, you can create a redirect for yoursite.com/music to redirect to another website dedicated to your favorite music. 

The other day we had an error on our Drupal 7 site where users would receive error messages whenever they tried to register for a conference. The site would register them, but the only thing the user would see is a JavaScript dialog box with an AJAX callback error message with some code in it; since the users didn't know that the site had registered them, they kept clicking the register button, getting registered multiple times. Not a desirable state of affairs.

This post was written 06/12/2015 and was migrated over from my Drupal 7 site, which is now offline.  Because of that, certain demonstrations in this post may not be functional.

Recently I had to include a form within an existing set of nodes (using hook_node_view), and this form had to make an AJAX callback. I put the form definition and Ajax callback function in a separate file for convenience. From my_ajax_test.module: