これが機能していたので、新しいカテゴリを追加すると、Quantity
このエラーが発生します。
Undefined offset: 0 in (the form values)
未定義のオフセットがどこにあるかわかりません。どんな助けでも大歓迎です。
また、mysql が減価償却されていることも知っていますが、変更する前に動作させたいと考えています。
注意として、すべてのデータは編集フォームにリコールされ、処理するとそのエラーが発生します
また、クエリが検証され、実行されます。
編集機能
function edit_product($id, $name, $description, $price, $quantity, $picture, $category) {
$id = (int) $id;
$category = (int) $category;
$name = mysql_real_escape_string($name);
$description = mysql_real_escape_string($description);
$price = mysql_real_escape_string($price);
$quantity = (int) $quantity;
$picture = mysql_real_escape_string($picture);
mysql_query("UPDATE `shop` SET
`prod_id` = {$category},
`name` = '{$name}',
`description` = '{$description}',
`price` = '{$price}',
`quantity` = '{$quantity}',
`picture` = '{$picture}'
WHERE `id` = {$id}");
echo mysql_error();
}
ページを編集
$post = get_posts($_GET['id']);
if ( isset($_POST['name'], $_POST['description'], $_POST['price'], $_POST['quantity'], $_POST['picture'], $_POST['category']) ) {
$errors = array();
$name = trim($_POST['name']);
$description = trim($_POST['description']);
$price = trim($_POST['price']);
$quantity = trim($_POST['quantity']);
$picture = trim($_POST['picture']);
if ( empty($name) ) {
$errors[] = 'You need to supply a title';
} else if ( strlen($name) > 255 ) {
$errors[] = 'Title cannot be longer than 255 characters';
}
if ( empty($description) ) {
$errors[] = 'You need to supply text';
}
if ( empty($price) ) {
$errors[] = 'You need to supply text';
}
if ( empty($quantity) ) {
$errors[] = 'You need to supply text';
}
if ( empty($picture) ) {
$errors[] = 'You need to supply text';
}
if (! category_exists('id', $_POST['category']) ) {
$errors[] = 'Category does not exist';
}
if ( empty($errors) ) {
edit_product($_GET['id'], $name, $description, $price, $quantity, $picture, $_POST['category']);
header("Location: ../admin/edit_products.php?id={$post[0]['post_id']}");
die();
}
}
?>
.....
<label for="name">Title</label>
<input type="text" name="name" value="<?php echo $post[0]['name']; ?>"><br/>
<label for="price">price</label>
<input type="text" name="price" value="<?php echo $post[0]['price']; ?>"><br/>
<label for="sale">Quantity</label>
<input type="text" name="quantity" value="<?php echo $post[0]['quantity']; ?>"><br/>
<label for="picture">Picture</label>
<input type="text" name="picture" value="<?php echo $post[0]['picture']; ?>"><br/>
<label for="description">Description</label>
<textarea name="description" rows="15" cols="50"><?php echo $post[0]['description']; ?></textarea><br/>
<label for="prod_id">Category</label>
<select name="category">
<?php
foreach ( get_categories() as $category ) {
$selected = ( $category['name'] == $post[0]['name'] ) ? " selected" : '';
?>
<option value="<?php echo $category['id']; ?>" <?php echo $selected; ?>> <?php echo $category['name']; ?></option>
--------------
Post 関数を取得 - 要求どおり。
function get_posts($id = null, $cat_id = null) {
$posts = array();
$query ="SELECT `shop`.`id` AS `post_id` , `products_cat`.`id` AS `category_id` , `shop`.`name` , `description` , `price` , `quantity` , `picture`
FROM `shop`
INNER JOIN `products_cat` ON `shop`.`prod_id` = `products_cat`.`id` ";
if ( isset($id) ) {
$id = (int) $id;
$query .= " WHERE `shop`.`id` = {$id}";
}
if ( isset($cat_id) ) {
$cat_id = (int) $cat_id;
$query .= " WHERE `products_cat`.`id` = {$cat_id}";
}
$query .= " ORDER BY `shop`.`price` DESC";
$query = mysql_query($query);
echo mysql_error();
while ( $row = mysql_fetch_assoc($query) ) {
$posts[] = $row;
}
return $posts;
}