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walterdavis/gist:4444209

Last active December 10, 2015 13:58
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gistfile1.php
<?php
class Product extends MyActiveRecord{
function sell($q){
if($this->quantity - $q >= 0){
$this->quantity -= $q;
}else{
$this->add_error('quantity', 'You can only purchase ' . $this->quantity . ' of this item');
}
}
}
// Handle a form submission, if it exists
if(isset($_POST['order'])){
$errors = $order = array();
foreach($_POST['order'] as $key => $val){
if($product = MyActiveRecord::FindById('Product', $key)){
$product->sell($val);
if(count($product->get_errors()) > 0){
$errors[$key] = $product->get_errors();
}else{
$product->save();
$order[] = urlencode($product->name . ':' . $val);
}
}
}
if(count($errors) > 0){
//show errors (ugly style)
die(print_r($errors, true));
}else{
header('Location: http://your.mals.cart.server/order_page?order[]=' . implode('&order[]=', $order);
}
}
// Show a list of products for sale with a form to buy them
function q($id){
if(isset($_POST['order'][$id]))
return $_POST['order'][$id];
return '';
}
$products = MyActiveRecord::FindAll('Product', 'quantity > 0', 'name ASC');
$out = '<!DOCTYPE html><html><head><meta charset="utf-8" /><title>Store</title></head><body><form action="" method="post"><ul>';
foreach($products as $product){
$out .= '<li>' . $product->name . ': ' . $product->price . '<br />' . $product->description . '<br /><input name="order[' . $product->id . ']" value="' . q($product->id) . '" /></li>';
}
print $out . '</ul><p><input type="submit" value="Place Order"/></p></form></body></html>';
?>
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