From 170479eb857c96d6bd78e6d2f239490aae382cda Mon Sep 17 00:00:00 2001
From: Cristian Torres <cris.torres15@gmail.com>
Date: Mon, 22 Aug 2016 03:23:13 -0600
Subject: [PATCH] Fix on getPreviousRecordID

For some reason it has been returning false then the button for previous record is disabled, so, I changed it to be exactly as ```getNextRecordID``` and it worked
---
 code/extensions/GridFieldBetterButtonsItemRequest.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/code/extensions/GridFieldBetterButtonsItemRequest.php b/code/extensions/GridFieldBetterButtonsItemRequest.php
index 6a6c381..16af597 100755
--- a/code/extensions/GridFieldBetterButtonsItemRequest.php
+++ b/code/extensions/GridFieldBetterButtonsItemRequest.php
@@ -504,9 +504,9 @@ protected function saveAndRedirect($data, $form, $redirectLink) {
      * @return int
      */
     public function getPreviousRecordID() {
-		$map = $this->owner->gridField->getManipulatedList()->column('ID');
+		$map = $this->owner->gridField->getManipulatedList()->limit(PHP_INT_MAX, 0)->column('ID');
 		$offset = array_search($this->owner->record->ID, $map);
-		return ($offset > 0) ? $map[$offset-1] : false;
+		return isset($map[$offset-1]) ? $map[$offset-1] : false;
 	}