Handle empty field data (#8)

* Handle empty data 	a7423d6
* Fix whitespace 	38d320e
Signed-off-by: Nils Hörrmann <nils.hoerrmann@hananils.de>
* Version 2.7.1 37baf98
Signed-off-by: Nils Hörrmann <nils.hoerrmann@hananils.de>

Author: nilshoerrmann

extension.meta.xml

@@ -21,6 +21,9 @@
 		</author>
 	</authors>
 	<releases>
+		<release version="2.7.1" date="2017-08-10" min="2.6.0" max="2.x.x">
+			- Catch empty field data (prevents empty database rows)
+		</release>
 		<release version="2.7.0" date="2017-05-18" min="2.6.0" max="2.x.x">
 			- Give option to make handle unique or not (default to unique as was before)
 			- Make sure all entries table always have a UNIQUE KEY on the `entry_id` column
@@ -119,4 +122,4 @@
 			- This is a complete rewrite of the old extension, it isn't backwards compatible, so don't try to upgrade.
 		</release>
 	</releases>
-</extension>
+</extension>

fields/field.textbox.php

@@ -531,6 +531,11 @@ public function checkPostFieldData($data, &$message, $entry_id = null) {
 
 		public function processRawFieldData($data, &$status, &$message = null, $simulate = false, $entry_id = null) {
 			$status = self::__OK__;
+
+			if (strlen(trim($data)) == 0) {
+				return array();
+			}
+
 			$formatted = $this->applyFormatting($data);
 
 			$result = array(
@@ -810,7 +815,7 @@ private static function replaceAnds($data) {
 			if (!preg_match('/((\W)and)|(and(\W))/i', $data)) {
 				return $data;
 			}
-			
+
 			// Negative match?
 			if (preg_match('/^not(\W)/i', $data)) {
 				$mode = '-';