Notice: Undefined index while deleting the item - php

Question

I am trying to delete an entry, But constantly getting these errors:
Notice: Undefined index: wineTypeID in
/storage/ssd5/765/3453765/public_html/wine_action.php on line 33
Notice: Undefined index: wineName in
/storage/ssd5/765/3453765/public_html/wine_action.php on line 34
Notice: Undefined index: wineSize in
/storage/ssd5/765/3453765/public_html/wine_action.php on line 35
Notice: Undefined index: winePrice in
/storage/ssd5/765/3453765/public_html/wine_action.php on line 36
my code looks like this
<?php
// include the connection stream include 'connectYes.php';
// here are the two hiddent fields
// they tell the script is this is an add, update or delete
// and for an update and delete, they pass the id
$action = $_REQUEST["action"];
$id = $_REQUEST["id"];
$wineTypeID = $_REQUEST["wineTypeID"];
$wineName = $_REQUEST["wineName"];
$wineSize = $_REQUEST["wineSize"];
$winePrice = $_REQUEST["winePrice"];
if ($action == 'a') {
$query = "insert into WINE values (
null,
'$wineTypeID',
'$wineName',
'$wineSize',
'$winePrice'
)";
mysqli_query($conn,$query)
or die (mysqli_error());
print "<h3>The Item $wineName is added to the List</h3>";
" </h3>";
}
if ($action == 'u') {
$query = "update WINE
set wineTypeID = '$wineTypeID',
wineName = '$wineName',
wineSize = '$wineSize',
winePrice = '$winePrice'
where wineID = '$id'";
mysqli_query($conn, $query)
or die(mysqli_error());
print "<h3>Update Successful</h3>";
} // end u
if ($action == 'd') {
$query = "delete from WINE
where wineID = '$id'";
mysqli_query($conn, $query)
or die("query failed:" . mysqli_error());
print "<h3>Delete Successful</h3>";
}
?>}
Links to my page :- my page
Link to my files :- Php Files
mysql structure Image :-Mysql structure

Answer 1

Please check you request parameters whether "wineTypeID" paremeter is passing or not.