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- <?php
- /**
- * @file
- * Provide diff field functions for the Date module.
- */
- /**
- * Diff field callback for parsing date fields comparative values.
- */
- function date_field_diff_view($items, $context) {
- $diff_items = array();
- $display = $context['display'];
- $display['settings']['format_type'] = $context['settings']['format_type'];
- $display['settings']['fromto'] = $context['settings']['fromto'];
- foreach ($items as $delta => $item) {
- $date = date_formatter_process('date_default', $context['entity_type'], $context['entity'], $context['field'], $context['instance'], $context['language'], $item, $display);
- switch ($display['settings']['fromto']) {
- case 'both':
- if ($date['value']['formatted'] != $date['value2']['formatted']) {
- $diff_items[$delta] = t('@from to @to', array(
- '@from' => $date['value']['formatted'],
- '@to' => $date['value2']['formatted'],
- ));
- }
- else {
- $diff_items[$delta] = $date['value']['formatted'];
- }
- break;
- case 'value':
- case 'value2':
- $diff_items[$delta] = $date[$display['settings']['fromto']]['formatted'];
- break;
- }
- }
- return $diff_items;
- }
- /**
- * Provide default field comparison options.
- */
- function date_field_diff_default_options($field_type) {
- return array(
- 'format_type' => 'long',
- 'fromto' => 'both',
- );
- }
- /**
- * Provide a form for setting the field comparison options.
- */
- function date_field_diff_options_form($field_type, $settings) {
- $options_form = array();
- $form['format_type'] = array(
- '#title' => t('Choose how render dates and times'),
- '#type' => 'select',
- '#options' => date_format_type_options(),
- '#default_value' => $settings['format_type'],
- '#description' => t('To add or edit options, visit <a href="@date-time-page">Date and time settings</a>.', array('@date-time-page' => url('admin/config/regional/date-time'))),
- '#weight' => 0,
- );
- $form['fromto'] = array(
- '#title' => t('Display'),
- '#type' => 'select',
- '#options' => array(
- 'both' => t('Both Start and End dates'),
- 'value' => t('Start date only'),
- 'value2' => t('End date only'),
- ),
- '#default_value' => $settings['fromto'],
- '#weight' => 1,
- );
- return $options_form;
- }
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