In your theme’s template.php:

function MYTHEME_form_alter(&$form, &$form_state, $form_id) {
  switch ($form_id){
    case 'views_form_commerce_cart_form_default':
      $form['actions']['checkout']['#value'] = 'Buy / Kaufen';
      break;
  }
}

When you have more than 100 Blocks things get messy on Drupal’s Block Admin Interface. If you ever went crazy because of weird issues when dragging and dropping blocks to change their weight and/or region you probably have hit Drupal’s internal limit of handling weights from -50 to +50 or otherwise said, 100 items.

It can be fixed by setting the variable drupal_weight_select_max to a higher value. This can be done in various ways, here’s how its implemented in a deploy script.

function dgm_deploy_update_7011() {
  variable_set('drupal_weight_select_max', 250);
}

For a recent project we needed to automatically change a Node’s field value upon saving with a computed value. For an unrelated reason we needed this value to be in a regular text field, so using Computed Field was off the table.

It turned out to be really simple to accomlish with a minimal amount of custom code.

<?php
/*
 * Changes the value of field_marker to a string made up of the
 * Node's type and the value of it's category taxonomy term
 * Slashes will be replaced with deshes, spaces get removed
 * Must make sure that the following exists:
 *  - text field "field_marker"
 *  - node types "gesuch" and "angebot"
 *  - taxonomy reference field "field_category"
 */

// Helper function to keep our code
function save_marker_category($node) {
  if($node->type == 'gesuch' || $node->type == 'angebot') {

    $find = array('/', ' ');
    $replace = array('-', '');

    $category_object = taxonomy_term_load($node->field_category['und'][0]['tid']);
    $category =  trim(strtolower(str_replace($find, $replace, $category_object->name)));

    $type = $node->type;
    $node->field_marker['und'][0]['value'] = $type.'_'.$category;

    // Save the new value
    field_attach_update('node', $node);
  }
}

function MYMODULE_node_update($node) {
  save_marker_category($node);
}

function MYMODULE_node_insert($node) {
  save_marker_category($node);
}