Index: disqus.field.inc
===================================================================
--- disqus.field.inc	(revision 0)
+++ disqus.field.inc	(revision 1852)
@@ -0,0 +1,153 @@
+<?php
+
+/**
+ * @file
+ * Disqus as field
+ */
+
+/**
+ * Implements hook_field_info().
+ */
+function disqus_field_info() {
+
+  return array(
+    'disqus_comment' => array(
+      'label' => t('Disqus comment'),
+      'description' => t('Disqus comment widget'),
+      'settings' => array(),
+      'instance_settings' => array(),
+      'default_widget' => 'disqus_comment',
+      'default_formatter' => 'disqus_comment',
+    ),
+  );
+}
+
+/**
+ * Implements hook_field_load().
+ */
+function disqus_field_load($entity_type, $entities, $field, $instances, $langcode, &$items) {
+
+  $domain = variable_get('disqus_domain', '');
+  if (!empty($domain)) {
+    $entity_info = entity_get_info($entity_type);
+    foreach ($entities as $entity_id => $entity) {
+      $uri = $entity_info['uri callback']($entity);
+
+      # Core not yet provide entity title-callback.
+      $title = '';
+      if (!empty($entity->title)) {
+        $title = $entity->title;
+      }
+      elseif (!empty($entity->name)) {
+        $title = $entity->name;
+      }
+
+      foreach ($items[$entity_id] as $delta => $item) {
+        $items[$entity_id][$delta] = array(
+          'domain' => $domain,
+          'status' => $item['value'],
+          'url' => url($uri['path'], array('absolute' => true)),
+          'title' => check_plain($title),
+          'identifier' => "{$entity_type}/{$entity_id}",
+          'developer' => variable_get('disqus_developer', FALSE),
+        );
+        dpm($items[$entity_id][$delta]);
+      }
+    }
+  }
+}
+
+function disqus_field_update($entity_type, $entity, $field, $instance, $langcode, &$items) {
+
+  foreach ($items as $i => $item) {
+    if (empty($item['comment_settings']['disqus_status'])) {
+      continue;
+    }
+    $items[$i] = array('value' => $item['comment_settings']['disqus_status']);
+  }
+}
+
+/**
+ * Implements hook_field_is_empty().
+ */
+function disqus_field_is_empty($item, $field) {
+  return FALSE;
+}
+
+/**
+ * Implements hook_field_widget_info().
+ */
+function disqus_field_widget_info() {
+
+  return array(
+    'disqus_comment' => array(
+      'label' => t('Default'),
+      'field types' => array('disqus_comment'),
+      'settings' => array(),
+    ),
+  );
+}
+
+
+/**
+ * Implements hook_field_widget_form().
+ */
+function disqus_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
+
+  switch ($instance['widget']['type']) {
+    case 'disqus_comment':
+      if (!isset($element['comment_settings'])) {
+        $element['comment_settings'] = array(
+          '#type' => 'fieldset',
+          '#access' => user_access('toggle disqus comments'),
+          '#title' => t('Comment settings'),
+          '#collapsible' => TRUE,
+          '#collapsed' => TRUE,
+          '#group' => 'additional_settings',
+          '#weight' => 30,
+        );
+      }
+      $element['comment_settings']['disqus_status'] = array(
+        '#type' => 'checkbox',
+        '#title' => t('Disqus comments'),
+        '#description' => t('Users can post comments using <a href="@disqus">Disqus</a>.', array('@disqus' => 'http://disqus.com')),
+        // @TODO: Check default value
+        '#default_value' => isset($items[$delta]['disqus_status']) ? $items[$delta]['disqus_status'] : TRUE,
+        '#access' => user_access('toggle disqus comments'),
+      );
+      return $element;
+  }
+}
+
+/**
+ * Implements hook_field_formatter_info().
+ */
+function disqus_field_formatter_info() {
+
+  return array(
+    'disqus_comment' => array(
+      'label' => t('Default'),
+      'field types' => array('disqus_comment'),
+    ),
+  );
+}
+
+/**
+ * Implements hook_field_formatter_view().
+ */
+function disqus_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
+
+  $element = array();
+  switch ($display['type']) {
+    case 'disqus_comment':
+      foreach ($items as $delta => $item) {
+        $element[$delta] = array(
+          '#type' => 'disqus',
+          '#disqus' => $item,
+        );
+      }
+      break;
+  }
+  
+  return $element;
+}
Index: disqus.module
===================================================================
--- disqus.module	(revision 1552)
+++ disqus.module	(working copy)
@@ -6,6 +6,11 @@
  */
 
 /**
+ * Support field
+ */
+require_once dirname(__FILE__) . '/disqus.field.inc';
+
+/**
  * Implements hook_help().
  */
 function disqus_help($path, $arg) {
Index: disqus.install
===================================================================
--- disqus.install	(revision 1552)
+++ disqus.install	(working copy)
@@ -39,6 +39,22 @@
 }
 
 /**
+ * Implements hook_field_schema().
+ */
+function disqus_field_schema($field) {
+  $columns = array();
+  switch ($field['type']) {
+    case 'disqus_comment':
+      $columns['value'] = array(
+        'type' => 'int',
+        'not null' => FALSE,
+      );
+      break;
+  }
+  return array('columns' => $columns);
+}
+
+/**
  * Implements hook_uninstall().
  */
 function disqus_uninstall() {