dvr($input, $return = FALSE, $name = NULL) The output is displayed in the page header, making this a good choice if your theme doesn’t print the $messages variable. Uses var_dump() to pretty-print a variable to the browser (without using krumo). You can use the $name parameter to distinguish between different calls to dpr(). Set the second parameter to TRUE if you want to return a string instead of printing it. dpr($input, $return = FALSE, $name = NULL) Pretty-prints a variable to the browser (without using krumo). If, for some reason, you are not using Krumo, you can use the $name parameter to distinguish between different calls to dvm(). The output of this function is harder to read than the Krumo-based output of dpmt(), but it can be useful if you need to copy and paste it to another application. Uses var_dump() to print a variable to the ‘message’ area of the page using drupal_set_message(). If, for some reason, you are not using Krumo, you can use the $name parameter to distinguish between different calls to dpm(). Because the Devel module now comes with Krumo, the output is compact and unobtrusive. You can use this function to keep track of one or more variables when you’re working on the code running your site. Prints a variable to the ‘message’ area of the page using drupal_set_message(). Go to Administer → Build → Modules and enable the Devel module.Download and install the latest version of the Devel module from.See the Drupal handbook for more information. These modules are not covered in this guide. (Note that this module doesn’t work if Drupal for Firebug is enabled.) Theme developer: Displays theme API information for theme developers.Devel generate: Generates dummy users, nodes, and taxonomy terms.In addition to the core module, the Devel package contains some other useful modules: Post corrections or additions in the issue queue. This guide has a companion module available at. It covers the Devel contrib module, the Drupal for Firebug contrib module and Firefox extension, the FirePHP library, and the combination of NetBeans and Xdebug. Replace the word template with your theme name or you will end up with a WSOD.This page gives a brief overview of some of the tools you can use to make Drupal development and debugging easier. Geofield integrates well with OpenLayers, but in this case I don’t want the overhead of OpenLayers and don’t need to actually display the maps on the node.įirst, create the template_preprocess_field function in the template.php file of your theme. In this example I’m going to take a geofield and change its output to provide a link to a Google Map. When overriding the you’ll end up with a new file for every field you override (something like ). So it could take a large amount of code to build a functioning node override.įewer files to manage. When you override the output of the file to adjust a single field output you are also taking on the responsibility of outputting every field in the specific manner you want. Processing an efficient php function will always be faster than Drupal’s template override system, looking for the right file and processing it. There are a number of reasons why you would want to use this function as apposed to overriding or in your theme: The function template_preprocess_field can be used to manipulate just the markup of the field in the $variables array before it’s output to your theme. Sometimes it would be great to just override the field itself without touching the field values in the database. Overriding the output of an individual field on a node can be done by overriding the node template, but it sure does feel like overkill for just one field.
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