Professional CodeIgniter, Thomas Myer
Chapter 5: Building a Shopping Cart
115
Notice that in the code below, the
$TOTALPRICE
variable is taken from the totalprice session variable.
One more thing that ' s important to note: You may be wondering why there ' s a class assignment of
" process " on each form field that contains the product count. In the upcoming sections, you ' re going to
be adding some Ajax handlers to update the form, and you ' re going to filter the form fields by class
name. It ' s a handy trick made available to you by the Prototype library -- more on this in the section
" Adding Update Functionality to the Shopping Cart " later in this chapter.
" process " on each form field that contains the product count. In the upcoming sections, you ' re going to
be adding some Ajax handlers to update the form, and you ' re going to filter the form fields by class
name. It ' s a handy trick made available to you by the Prototype library -- more on this in the section
" Adding Update Functionality to the Shopping Cart " later in this chapter.
$TOTALPRICE = $_SESSION[`totalprice'];
if (count($_SESSION[`cart'])){
foreach ($_SESSION[`cart'] as $PID =
>
$row){
$data = array(
`name' =
>
"li_id[$PID]",
`value'=
>
$row[`count'],
`id' =
>
"li_id_$PID",
`size' =
>
5,
`class' =
>
`process'
);
echo "
<
tr valign='top'
>
\n";
echo "
<
td
>
". form_input($data)."
<
/td
>
\n";
echo "
<
td id='li_name_".$PID."'
>
". $row[`name']."
<
/td
>
\n";
echo "
<
td id='li_price_".$PID."'
>
". $row[`price']."
<
/td
>
\n";
echo "
<
td id='li_total_".$PID."'
>
".$row[`price'] * $row[`count']."
<
/td
>
\n";
echo "
<
/tr
>
\n";
}
$total_data = array(`name' =
>
`total', `id'=
>
'total', `value' =
>
$TOTALPRICE);
echo "
<
tr valign='top'
>
\n";
echo "
<
td colspan='3'
>
&
nbsp;
<
/td
>
\n";
echo "
<
td
>
$TOTALPRICE ".form_hidden($total_data)."
<
/td
>
\n";
echo "
<
/tr
>
\n";
echo "
<
tr valign='top'
>
\n";
echo "
<
td colspan='3'
>
&
nbsp;
<
/td
>
\n";
echo "
<
td
>
".form_submit(`submit', `checkout')."
<
/td
>
\n";
echo "
<
/tr
>
\n";
}else{
//just in case!
echo "
<
tr
>
<
td
>
No items to show here!
<
/td
>
<
/tr
>
\n";
}//end outer if count
?
>
<
/table
>
<
/form
>
<
/div
>
At this point, you should have something similar to the view illustrated in Figure 5 - 4 .
c05.indd 115
c05.indd 115
6/10/08 5:35:17 PM
6/10/08 5:35:17 PM