如何为用户创建一个从对象集合中删除对象的选项？

Question

Here is my code:

$printcoll = $_SESSION['ObjColl'];


for($i = 0;$i < $printcoll->getlineCount();$i++){
$li = $printcoll -> getLineItem($i);
$item = $li->getItem();
if ($item instanceof Product) {
 print "Bike ID - ";
} 
print $item-> getId();


if ($item instanceof Product) {
 print "&nbsp Price &pound"; 

}
print $item-> getPrice();

if ($item instanceof Product) {
 print "&nbsp Quantity - "; 

}

print $li->getQuantity();
echo "</br>";

Here is what the ObjectCollection looks like:

ObjectCollection Object ( [line_items_array:ObjectCollection:private] => Array ( [0] => LineItem Object ( [item:LineItem:private] => Product Object ( [id] => 1 [name] => Yamaha [price] => 10000 ) [quantity:LineItem:private] => 3 ) [1] => LineItem Object ( [item:LineItem:private] => Product Object ( [id] => 4 [name] => Kawasaki [price] => 12000 ) [quantity:LineItem:private] => 7 )

The output of the For loop is:

Bike ID - 1 Price £10000 Quantity - 3

Bike ID - 4 Price £12000 Quantity - 7

The ObjectCollection is made up of Product objects. How do i add an option into the for loop so the user can delete a "Product" object out of the ObjectCollection class?

public function delLineItem($line_item) is the function within the ObjectCollection class. But how do i integrate that into a OPTION in the for loop because the user may or may not to delete it?

So for example, i want the output of the for loop to be :

Bike ID - 1 Price £10000 Quantity - 3 DELETE BUTTON

So if the user clicks on the delete button, it will delete that specific product out of the object collection. Thanks

Answer 1

you have to link back to your current script and create an action, for example called Delete...

Cjeck out the if block to the top, add your code for deleting the item there... Further down you will see a Delete link for activating the action...

$printcoll = $_SESSION['ObjColl'];

//Code for delete operation
if (is_set($_GET['delete'])) {
    $id = $_GET['delete'];
    echo "Deleting $id...";
}


for($i = 0;$i < $printcoll->getlineCount();$i++){
$li = $printcoll -> getLineItem($i);
$item = $li->getItem();
if ($item instanceof Product) {
 print "Bike ID - ";
} 
print $item->getId();

//Add a delete link
print "<a href='" . $_SERVER['PHP_SELF'] . "?delete=" . $i . "'>Delete</a>";


if ($item instanceof Product) {
 print "&nbsp Price &pound"; 

}
print $item-> getPrice();

if ($item instanceof Product) {
 print "&nbsp Quantity - "; 

}

print $li->getQuantity();
echo "</br>";