#246880 by mr.baileys: Fixed Error when adding duplicate category to contact...

#246880 by mr.baileys: Fixed Error when adding duplicate category to contact form module (with tests).

modules/contact/contact.admin.inc

@@ -112,6 +112,18 @@ function contact_category_edit_form($form, &$form_state, array $category = array
 function contact_category_edit_form_validate($form, &$form_state) {
   // Validate and each e-mail recipient.
   $recipients = explode(',', $form_state['values']['recipients']);
+
+  // When creating a new contact form, or renaming the category on an existing
+  // contact form, make sure that the given category is unique.
+  $category = $form_state['values']['category'];
+  $query = db_select('contact', 'c')->condition('c.category', $category, '=');
+  if (!empty($form_state['values']['cid'])) {
+    $query->condition('c.cid', $form_state['values']['cid'], '<>');
+  }
+  if ($query->countQuery()->execute()->fetchField()) {
+    form_set_error('category', t('A contact form with category %category already exists.', array('%category' => $category)));
+  }
+
   foreach ($recipients as &$recipient) {
     $recipient = trim($recipient);
     if (!valid_email_address($recipient)) {

modules/contact/contact.test

@@ -94,6 +94,11 @@ class ContactSitewideTestCase extends DrupalWebTestCase {
     $this->addCategory($category = $this->randomName(16), implode(',', array($recipients[0], $recipients[1], $recipients[2])), '', FALSE);
     $this->assertRaw(t('Category %category has been saved.', array('%category' => $category)), t('Category successfully saved.'));
 
+    // Try adding a category that already exists.
+    $this->addCategory($category, '', '', FALSE);
+    $this->assertNoRaw(t('Category %category has been saved.', array('%category' => $category)), t('Category not saved.'));
+    $this->assertRaw(t('A contact form with category %category already exists.', array('%category' => $category)), t('Duplicate category error found.'));
+
     // Clear flood table in preparation for flood test and allow other checks to complete.
     db_delete('flood')->execute();
     $num_records_after = db_query("SELECT COUNT(*) FROM {flood}")->fetchField();