I have a field called field_price. How do I get that field on my page to display Free when the value is $0.00, and the actual value every other time?

I tried to intercept the loading of the field by doing things like:

// do stuff

// do stuff

// do stuff

etc.. etc.. etc..

I tried so many different permutations of the above as modules, template, changing function names etc... But none of them ever fire. I know I have the Field module enabled.

What am I doing wrong?

Note: I am using drupal 7


2 Answers 2


Ok, i figured it out. I put this code into my template.php of my theme:

function johncustom_field__field_price(&$variables) {
        if($variables['element'][0] == '$0.00') return 'Free';
        else return $variables['element'][0];

I also had to clear the cache several times before this function would fire.


I believe hook_field_formatter_view is the answer for your question. It says

Build a renderable array for a field value.

Using above hook in a custom module you can change the field value !

For Example, if your custom module name is johncustom then your function inside module file should be

function johncustom_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
  $element = array();
  // Change display type & Check for your field here
  switch ($display['type']) {
    // Override check plain
    case 'taxonomy_term_reference_plain':
      foreach ($items as $delta => $item) {
        $element[$delta] = array(
          '#markup' => mymodule_crazy_fun_plain($item['value']),
  return $element;
  • Ok thanks. let's say I have a module called johncustom. So would my hook be called johncustom_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) ? I tried putting that in my module but it doesn't fire. Commented Oct 6, 2012 at 5:04
  • Any suggestions on why my function is not firing? I tried putting a die() statement in the code you provided. But it doesn't fire. Eveyr other function/hook in my johncustom.module is firing. I made sure I have Field UI and Field modules installed and enabled. Is there somethign else I need to check/do? Commented Oct 6, 2012 at 5:19
  • Do this to verify , put drupal_set_message("I am in John custom module"); just above $element = array(); and go to any node view page where you are displaying fields. Check message is appearing or not !
    – Anil Sagar
    Commented Oct 6, 2012 at 5:21
  • I did as you say. The message is not appearing on any of my pages. ANy other ideas? Commented Oct 6, 2012 at 5:26
  • 2
    @John That hook is only fired for modules implementing field formatters, you can't use it to alter other modules' implementations of a formatter
    – Clive
    Commented Oct 6, 2012 at 13:16

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