diff -r 2ac491548d8d -r 531d5458782f www/includes/db_inventory_hops.php
--- a/www/includes/db_inventory_hops.php	Tue Jan 22 20:27:45 2019 +0100
+++ b/www/includes/db_inventory_hops.php	Tue Jan 22 22:46:58 2019 +0100
@@ -11,81 +11,74 @@
 }
 mysqli_set_charset($connect, "utf8" );
 
-// get data and store in a json array
-$query = "SELECT * FROM inventory_hops ORDER BY origin,name";
-if (isset($_GET['insert'])) {
-	// INSERT COMMAND
-	$sql  = "INSERT INTO `inventory_hops` SET name='" . mysqli_real_escape_string($connect, $_GET['name']);
-	$sql .= "', alpha='" . $_GET['alpha'];
-	$sql .= "', beta='" . $_GET['beta'];
-	$sql .= "', humulene='" . $_GET['humulene'];
-	$sql .= "', caryophyllene='" . $_GET['caryophyllene'];
-	$sql .= "', cohumulone='" . $_GET['cohumulone'];
-	$sql .= "', myrcene='" . $_GET['myrcene'];
-	$sql .= "', hsi='" . $_GET['hsi'];
-	$sql .= "', type='" . $_GET['type'];
-	$sql .= "', form='" . $_GET['form'];
-	$sql .= "', notes='" . mysqli_real_escape_string($connect, $_GET['notes']);
-	$sql .= "', origin='" . mysqli_real_escape_string($connect, $_GET['origin']);
-	$sql .= "', substitutes='" . mysqli_real_escape_string($connect, $_GET['substitutes']);
-	($_GET['always_on_stock'] == 'true') ? $sql .= "', always_on_stock='1" : $sql .= "', always_on_stock='0";
-	$sql .= "', inventory='" . floatval($_GET['inventory']) / 1000.0;
-	$sql .= "', cost='" . $_GET['cost'];
-	$sql .= "', production_date='" . $_GET['production_date'];
-	$sql .= "', tht_date='" . $_GET['tht_date'];
-	$sql .= "', total_oil='" . $_GET['total_oil'];
-	$sql .= "';";
+if (isset($_POST['insert']) || isset($_POST['update'])) {
+	if (isset($_POST['insert'])) {
+		$sql  = "INSERT INTO `inventory_hops` SET ";
+	}
+	if (isset($_POST['update'])) {
+		$sql  = "UPDATE `inventory_hops` SET ";
+	}
+
+	$sql .= "name='" . mysqli_real_escape_string($connect, $_POST['name']);
+	$sql .= "', alpha='" . $_POST['alpha'];
+	$sql .= "', beta='" . $_POST['beta'];
+	$sql .= "', humulene='" . $_POST['humulene'];
+	$sql .= "', caryophyllene='" . $_POST['caryophyllene'];
+	$sql .= "', cohumulone='" . $_POST['cohumulone'];
+	$sql .= "', myrcene='" . $_POST['myrcene'];
+	$sql .= "', hsi='" . $_POST['hsi'];
+	$sql .= "', type='" . $_POST['type'];
+	$sql .= "', form='" . $_POST['form'];
+	$sql .= "', notes='" . mysqli_real_escape_string($connect, $_POST['notes']);
+	$sql .= "', origin='" . mysqli_real_escape_string($connect, $_POST['origin']);
+	$sql .= "', substitutes='" . mysqli_real_escape_string($connect, $_POST['substitutes']);
+	($_POST['always_on_stock'] == 'true') ? $sql .= "', always_on_stock='1" : $sql .= "', always_on_stock='0";
+	$sql .= "', inventory='" . floatval($_POST['inventory']) / 1000.0;
+	$sql .= "', cost='" . $_POST['cost'] . "'";
+	if ($_POST['production_date'] == '')
+		$sql .= ", production_date=NULL";
+	else
+		$sql .= ", production_date='" . $_POST['production_date'] . "'";
+	if ($_POST['tht_date'] == '')
+		$sql .= ", tht_date=NULL";
+	else
+		$sql .= ", tht_date='" . $_POST['tht_date'] . "'";
+	$sql .= ", total_oil='" . $_POST['total_oil'];
+	if (isset($_POST['insert'])) {
+		$sql .= "';";
+	}
+	if (isset($_POST['update'])) {
+		$sql .= "' WHERE record='" . $_POST['record'] . "';";
+	}
+	syslog(LOG_NOTICE, $sql);
+
 	$result = mysqli_query($connect, $sql);
 	if (! $result) {
 		syslog(LOG_NOTICE, "db_inventory_hops: ".$sql." result: ".mysqli_error($connect));
 	} else {
-		syslog(LOG_NOTICE, "db_inventory_hops: inserted ".$_GET['name']);
+		if (isset($_POST['update'])) {
+			syslog(LOG_NOTICE, "db_inventory_hops: updated record ".$_POST['record']);
+		} else {
+			$lastid = mysqli_insert_id($connect);
+			syslog(LOG_NOTICE, "db_inventory_hops: inserted record ".$lastid);
+		}
 	}
 	echo $result;
 
-} else if (isset($_GET['update'])) {
-	// UPDATE COMMAND
-	$sql  = "UPDATE `inventory_hops` SET name='" . mysqli_real_escape_string($connect, $_GET['name']);
-	$sql .= "', alpha='" . $_GET['alpha'];
-	$sql .= "', beta='" . $_GET['beta'];
-	$sql .= "', humulene='" . $_GET['humulene'];
-	$sql .= "', caryophyllene='" . $_GET['caryophyllene'];
-	$sql .= "', cohumulone='" . $_GET['cohumulone'];
-	$sql .= "', myrcene='" . $_GET['myrcene'];
-	$sql .= "', hsi='" . $_GET['hsi'];
-	$sql .= "', type='" . $_GET['type'];
-	$sql .= "', form='" . $_GET['form'];
-	$sql .= "', notes='" . mysqli_real_escape_string($connect, $_GET['notes']);
-	$sql .= "', origin='" . mysqli_real_escape_string($connect, $_GET['origin']);
-	$sql .= "', substitutes='" . mysqli_real_escape_string($connect, $_GET['substitutes']);
-	($_GET['always_on_stock'] == 'true') ? $sql .= "', always_on_stock='1" : $sql .= "', always_on_stock='0";
-	$sql .= "', inventory='" . floatval($_GET['inventory']) / 1000.0;
-	$sql .= "', cost='" . $_GET['cost'];
-	$sql .= "', production_date='" . $_GET['production_date'];
-	$sql .= "', tht_date='" . $_GET['tht_date'];
-	$sql .= "', total_oil='" . $_GET['total_oil'];
-	$sql .= "' WHERE record='" . $_GET['record'] . "';";
+} else if (isset($_POST['delete'])) {
+	// DELETE COMMAND
+	$sql = "DELETE FROM `inventory_hops` WHERE record='".$_POST['record']."';";
 	$result = mysqli_query($connect, $sql);
 	if (! $result) {
 		syslog(LOG_NOTICE, "db_inventory_hops: ".$sql." result: ".mysqli_error($connect));
 	} else {
-		syslog(LOG_NOTICE, "db_inventory_hops: updated record ".$_GET['record']);
-	}
-	echo $result;
-
-} else if (isset($_GET['delete'])) {
-	// DELETE COMMAND
-	$sql = "DELETE FROM `inventory_hops` WHERE record='".$_GET['record']."';";
-	$result = mysqli_query($connect, $sql);
-	if (! $result) {
-		syslog(LOG_NOTICE, "db_inventory_hops: ".$sql." result: ".mysqli_error($connect));
-	} else {
-		syslog(LOG_NOTICE, "db_inventory_hops: deleted record ".$_GET['record']);
+		syslog(LOG_NOTICE, "db_inventory_hops: deleted record ".$_POST['record']);
 	}
 	echo $result;
 
 } else {
 	// SELECT COMMAND
+	$query = "SELECT * FROM inventory_hops ORDER BY origin,name";
 	$result = mysqli_query($connect, $query) or die("SQL Error 1: " . mysqli_error($connect));
 	while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC)) {
 		$hops[] = array(