diff --git a/term_permissions.info b/term_permissions.info
index 7f8ca95..88edcd1 100644
--- a/term_permissions.info
+++ b/term_permissions.info
@@ -1,4 +1,4 @@
 name = Taxonomy Term Permissions
 description = Allows limiting the selection of specific taxonomy terms by user or role.
-core=6.x
+core = 7.x
 dependencies[] = taxonomy
diff --git a/term_permissions.install b/term_permissions.install
index 1e1b991..dc63804 100644
--- a/term_permissions.install
+++ b/term_permissions.install
@@ -1,12 +1,19 @@
 <?php
+/**
+ * @file
+ * Install, update and uninstall functions for the term_permissions module.
+ *
+ */
+
 
 
 /**
- * Implementation of hook_install()
+ * Implements hook_install().
  */
 function term_permissions_install() {
   $ret = array();
-  $results = drupal_install_schema('term_permissions');
+  // TODO The drupal_(un)install_schema functions are called automatically in D7.
+  $results = array()/*drupal_install_schema('term_permissions')*/;
   $install_pass = TRUE;
   foreach ($results as $result) {
     if (!$result['success']) {
@@ -19,15 +26,23 @@ function term_permissions_install() {
 }
 
 /**
- * Implementation of hook_schema()
+ * Implements hook_schema().
  */
 function term_permissions_schema() {
   $schema = array();
 
   $schema['term_permissions_user'] = array(
     'fields' => array(
-      'tid' => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE),
-      'uid' => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE),
+      'tid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
+      'uid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
     ),
     'primary key' => array(
       'tid',
@@ -37,8 +52,16 @@ function term_permissions_schema() {
 
   $schema['term_permissions_role'] = array(
     'fields' => array(
-      'tid' => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE),
-      'rid' => array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE),
+      'tid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
+      'rid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+      ),
     ),
     'primary key' => array(
       'tid',
@@ -50,8 +73,9 @@ function term_permissions_schema() {
 }
 
 /**
- * Implementation of hook_uninstall().
+ * Implements hook_uninstall().
  */
 function term_permissions_uninstall() {
-  drupal_uninstall_schema('term_permissions');
+  // TODO The drupal_(un)install_schema functions are called automatically in D7.
+  // drupal_uninstall_schema('term_permissions')
 }
diff --git a/term_permissions.module b/term_permissions.module
index e6550b6..d481a21 100644
--- a/term_permissions.module
+++ b/term_permissions.module
@@ -1,12 +1,11 @@
 <?php
-
 /**
  * @file
  * Allows access to terms in a vocabulary to be limited by user or role.
  */
 
 /**
- * Implementation of hook_help().
+ * Implements hook_help().
  */
 function term_permissions_help($path, $arg) {
   switch ($path) {
@@ -18,7 +17,7 @@ function term_permissions_help($path, $arg) {
 }
 
 /**
- * Implementation of hook_menu().
+ * Implements hook_menu().
  */
 function term_permissions_menu() {
   $items = array();
@@ -32,7 +31,7 @@ function term_permissions_menu() {
 }
 
 /**
- * Implementation of hook_form_alter()
+ * Implements hook_form_alter().
  *
  * @param $form
  *   The form to alter.
@@ -62,9 +61,13 @@ function term_permissions_form_alter(&$form, $form_state, $form_id) {
     // Pull in any stored users in the database.
     $allowed_users = array();
     if (!empty($form['tid']['#value'])) {
-      $result = db_query("SELECT uid FROM {term_permissions_user} WHERE tid = %d", $form['#term']['tid']);
-      while($uid = db_result($result)) {
-        $u = user_load($uid);
+      $result = db_select('term_permissions_user')
+        ->fields('term_permissions_user')
+        ->condition('tid', $form['#term']['tid'])
+        ->execute();
+
+      foreach ($result as $row) {
+        $u = user_load($row->uid);
         $allowed_users[] = $u->name;
       }
     }
@@ -82,14 +85,20 @@ function term_permissions_form_alter(&$form, $form_state, $form_id) {
       '#weight' => -10,
     );
 
-    $allowed_roles = array();
+
+        $allowed_roles = array();
     if (!empty($form['tid']['#value'])) {
-      $result = db_query("SELECT rid FROM {term_permissions_role} WHERE tid = %d", array($form['tid']['#value']));
-      while($rid = db_result($result)) {
-        $allowed_roles[] = $rid;
+      $result = db_select('term_permissions_role')
+        ->fields('term_permissions_role')
+        ->condition('tid', $form['#term']['tid'])
+        ->execute();
+
+      foreach ($result as $row) {
+        $allowed_roles[] = $row->rid;
       }
     }
 
+
     // Now, lets do the Roles table.
     $form['access']['role'] = array(
       '#type' => 'checkboxes',
@@ -107,35 +116,38 @@ function term_permissions_form_alter(&$form, $form_state, $form_id) {
 
   // This is the node add / edit form. If a different selector is used from
   // another contributed module, we do nothing so as to not break the form.
-  if (isset($form['type']) && isset($form['#node']) && isset($form['taxonomy']) && (!variable_get('taxonomy_override_selector', FALSE)) && $form['type']['#value'] .'_node_form' == $form_id) {
-    foreach($form['taxonomy'] as $vid => $vocabulary) {
-      if (!is_array($vocabulary) || !isset($vocabulary['#options'])) {
+    if (isset($form['type']) && isset($form['#node']) && (!variable_get('taxonomy_override_selector', FALSE)) && $form['type']['#value'] .'_node_form' == $form_id) {
+    $types = array('taxonomy_term_reference'); // Field types we are looking for
+
+    foreach($form as $field_name => $field) {
+      if(!$field_info = field_info_field($field_name)) // Should be handled by the field API
+        continue;
+
+      $options = &$form[$field_name][$form[$field_name]['#language']]['#options'];
+      if (!in_array($field_info['type'], $types) || !isset($options)) {
         continue;
       }
-      $total_terms = count($vocabulary['#options']);
-      foreach($vocabulary['#options'] as $terms) {
-        if (!isset($terms->option)) {
+
+      foreach($options as $tid => $name) {
+        if($tid == "_none")
           continue;
+
+        // Now we have the term ID, check to see if the current user has
+        // access to the term.
+        global $user;
+        if (!term_permissions_allowed($tid, $user)) {
+          unset($options[$tid]);
         }
-        foreach($terms->option as $tid => $term) {
-          // Now we have the term ID, check to see if the current user has
-          // access to the term.
-          global $user;
-          if (!term_permissions_allowed($tid, $user)) {
-            $total_terms--;
-            unset($terms->option[$tid]);
-          }
-          // If the user doesn't have access to any of the terms in the
-          // vocabulary, remove the form item entirely.
-          if ($total_terms <= 0) {
-            if ($vocabulary['#required']) {
-              drupal_set_message(t("Your account doesn't have permission to use any of the terms in the %vocabulary vocabulary. Your account must be given permission to use at least one term in the %vocabulary vocabulary to be able to add or edit the %content-type content type.", array('%vocabulary' => $vocabulary['#title'], '%content-type' => node_get_types('name', $form['type']['#value']))), 'warning');
-              watchdog('term_permissions', '%user was blocked from accessing the %content-type form as they do not have permission to use any terms in the <a href="@vocabulary-url">%vocabulary</a> vocabulary.', array('%user' => isset($user->name) ? $user->name : variable_get('anonymous', 'Anonymous'), '%content-type' => node_get_types('name', $form['type']['#value']), '@vocabulary-url' => url('admin/content/taxonomy/' . $vid), '%vocabulary' => $vocabulary['#title']), WATCHDOG_WARNING, l(t('edit vocabulary'), 'admin/content/taxonomy/' . $vid));
-              drupal_access_denied();
-              exit();
-            }
-            unset($form['taxonomy'][$vid]);
+        // If the user doesn't have access to any of the terms in the
+        // vocabulary, remove the form item entirely.
+        if (count($options) <= 1) {
+          if ($vocabulary['#required']) {
+            drupal_set_message(t("Your account doesn't have permission to use any of the terms in the %vocabulary vocabulary. Your account must be given permission to use at least one term in the %vocabulary vocabulary to be able to add or edit the %content-type content type.", array('%vocabulary' => $vocabulary['#title'], '%content-type' => node_get_types('name', $form['type']['#value']))), 'warning');
+            watchdog('term_permissions', '%user was blocked from accessing the %content-type form as they do not have permission to use any terms in the <a href="@vocabulary-url">%vocabulary</a> vocabulary.', array('%user' => isset($user->name) ? $user->name : variable_get('anonymous', 'Anonymous'), '%content-type' => node_get_types('name', $form['type']['#value']), '@vocabulary-url' => url('admin/content/taxonomy/' . $vid), '%vocabulary' => $vocabulary['#title']), WATCHDOG_WARNING, l(t('edit vocabulary'), 'admin/content/taxonomy/' . $vid));
+            drupal_access_denied();
+            exit();
           }
+          unset($form[$field_name]);
         }
       }
     }
@@ -154,7 +166,7 @@ function term_permissions_validate($form, &$form_state) {
   if (!empty($form_state['values']['access']['user'])) {
     $allowed_users = drupal_explode_tags($form_state['values']['access']['user']);
     foreach ($allowed_users as $name) {
-      if (!(user_load(array('name' => $name)))) {
+      if (!(array_shift(user_load_multiple(array(), array('name' => $name))))) {
         form_set_error('search_user', t('The user %name does not exist.', array('%user' => $name)));
       }
     }
@@ -172,20 +184,42 @@ function term_permissions_validate($form, &$form_state) {
  */
 function term_permissions_submit($form, &$form_state) {
   // For each user, save the term ID and the user ID.
-  db_query("DELETE FROM {term_permissions_user} WHERE tid = %d", $form_state['values']['tid']);
+  // TODO Please review the conversion of this statement to the D7 database API syntax.
+  /* db_query("DELETE FROM {term_permissions_user} WHERE tid = %d", $form_state['values']['tid']) */
+  db_delete('term_permissions_user')
+  ->condition('tid', $form_state['values']['tid'])
+  ->execute();
   if (!empty($form_state['values']['access']['user'])) {
     $allowed_users = drupal_explode_tags($form_state['values']['access']['user']);
-    foreach($allowed_users as $name) {
-      $u = user_load(array('name' => $name));
-      db_query("INSERT INTO {term_permissions_user} (tid, uid) VALUES (%d, %d)", $form_state['values']['tid'], $u->uid);
+    foreach ($allowed_users as $name) {
+      $u = array_shift(user_load_multiple(array(), array('name' => $name)));
+      // TODO Please review the conversion of this statement to the D7 database API syntax.
+      /* db_query("INSERT INTO {term_permissions_user} (tid, uid) VALUES (%d, %d)", $form_state['values']['tid'], $u->uid) */
+      $id = db_insert('term_permissions_user')
+  ->fields(array(
+        'tid' => $form_state['values']['tid'],
+        'uid' => $u->uid,
+      ))
+  ->execute();
     }
   }
 
   // For each role, save the term ID and the role ID.
-  db_query("DELETE FROM {term_permissions_role} WHERE tid = %d", $form_state['values']['tid']);
+  // TODO Please review the conversion of this statement to the D7 database API syntax.
+  /* db_query("DELETE FROM {term_permissions_role} WHERE tid = %d", $form_state['values']['tid']) */
+  db_delete('term_permissions_role')
+  ->condition('tid', $form_state['values']['tid'])
+  ->execute();
   if (!empty($form_state['values']['access']['role'])) {
-    foreach(array_keys(array_filter($form_state['values']['access']['role'])) as $rid) {
-      db_query("INSERT INTO {term_permissions_role} (tid, rid) VALUES (%d, %d)", $form_state['values']['tid'], $rid);
+    foreach (array_keys(array_filter($form_state['values']['access']['role'])) as $rid) {
+      // TODO Please review the conversion of this statement to the D7 database API syntax.
+      /* db_query("INSERT INTO {term_permissions_role} (tid, rid) VALUES (%d, %d)", $form_state['values']['tid'], $rid) */
+      $id = db_insert('term_permissions_role')
+        ->fields(array(
+          'tid' => $form_state['values']['tid'],
+          'rid' => $rid,
+        ))
+      ->execute();
     }
   }
 }
@@ -207,38 +241,37 @@ function term_permissions_allowed($tid, $user) {
     return TRUE;
   }
   // Are permissions enabled on this term?
-  if (!(db_result(db_query("SELECT COUNT(1) FROM {term_permissions_user} WHERE tid = %d", $tid)) || db_result(db_query("SELECT COUNT(1) FROM {term_permissions_role} WHERE tid = %d", $tid)))) {
+  if (!(db_query("SELECT COUNT(1) FROM {term_permissions_user} WHERE tid = :tid", array(':tid' => $tid))->fetchField() || db_query("SELECT COUNT(1) FROM {term_permissions_role} WHERE tid = :tid", array(':tid' => $tid))->fetchField())) {
     return TRUE;
   }
   // Permissions are enabled, check to see if this user or one of their roles
   // is allowed.
-  if (db_result(db_query("SELECT uid FROM {term_permissions_user} WHERE tid = %d AND uid = %d", $tid, $user->uid)) || db_result(db_query("SELECT rid FROM {term_permissions_role} WHERE tid = %d AND rid IN (" . implode(', ', array_keys($user->roles)) . ")", $tid))) {
+  // TODO Please convert this statement to the D7 database API syntax.
+  if (db_query("SELECT uid FROM {term_permissions_user} WHERE tid = :tid AND uid = :uid", array(':tid' => $tid, ':uid' => $user->uid))->fetchField() || db_query("SELECT rid FROM {term_permissions_role} WHERE tid = %d AND rid IN (" . implode(', ', array_keys($user->roles)) . ")", $tid)->fetchField()) {
     return TRUE;
   }
   return FALSE;
 }
 
 /**
- * Returns JS array for Taxonomy Term Permissions autocomplete fields. Supports
+ * Returns Json array for Taxonomy Term Permissions autocomplete fields. Supports
  * multiple entries separated by a comma.
  */
 function term_permissions_autocomplete_multiple($string) {
-  // The user enters a comma-separated list of users. We only autocomplete the last user.
+  // The user enters a comma-separated list of users.
+  // We only autocomplete the last user.
   $array = drupal_explode_tags($string);
 
-  // Fetch last tag
+  // Fetch last user.
   $last_string = trim(array_pop($array));
 
   $matches = array();
-  $result = db_query_range("SELECT u.name FROM {users} u WHERE LOWER(u.name) LIKE LOWER('%s%%')", $last_string, 0, 10);
+  $result = db_select('users')->fields('users', array('name'))->condition('name', db_like($last_string) . '%', 'LIKE')->range(0, 10)->execute();
 
-  $prefix = count($array) ? implode(', ', $array) .', ' : '';
+  $prefix = count($array) ? implode(', ', $array) . ', ' : '';
 
-  while ($user = db_fetch_object($result)) {
+  foreach ($result as $user) {
     $matches[$prefix . $user->name] = check_plain($user->name);
   }
-  if (module_exists('devel')) {
-    $GLOBALS['devel_shutdown'] = FALSE;
-  }
-  exit(drupal_json($matches));
+  exit(drupal_json_output($matches));
 }