形態
<?php include '../view/header.php'; ?>
<div id="main">
<h1>Add Athlete</h1>
<form action="index.php" method="post" id="add_product_form">
<input type="hidden" name="action" value="add_product" />
<label>Country:</label>
<select name="category_id">
<?php foreach ($categories as $category) : ?>
<option value="<?php echo $category['categoryID']; ?>">
<?php echo $category['categoryName']; ?>
</option>
<?php endforeach; ?>
</select>
<br />
<label>Code:</label>
<input type="input" name="code" />
<br />
<label>First Name:</label>
<input type="input" name="first_name" />
<br />
<label>Last Name:</label>
<input type="input" name="last_name" />
<br />
<label> </label>
<input type="submit" value="Add Athlete" />
<br /> <br />
</form>
<p><a href="index.php?action=list_products">View List of Olympic Athletes</a></p>
</div>
<?php include '../view/footer.php'; ?>
フォームからの入力を取り込むPHPは
<?php
require('../model/database.php');
require('../model/product_db.php');
require('../model/category_db.php');
if (isset($_POST['action'])) {
$action = $_POST['action'];
} else if (isset($_GET['action'])) {
$action = $_GET['action'];
} else {
$action = 'list_products';
}
if ($action == 'list_products') {
// Get the current category ID
$category_id = $_GET['category_id'];
if (!isset($category_id)) {
$category_id = 1;
}
// Get product and category data
$category_name = get_category_name($category_id);
$categories = get_categories();
$products = get_products_by_category($category_id);
// Display the product list
include('product_list.php');
} else if ($action == 'delete_product') {
// Get the IDs
$product_id = $_POST['product_id'];
$category_id = $_POST['category_id'];
// Delete the product
delete_product($product_id);
// Display the Product List page for the current category
header("Location: .?category_id=$category_id");
} else if ($action == 'show_add_form') {
$categories = get_categories();
include('product_add.php');
} else if ($action == 'add_product') {
$category_id = $_POST['category_id'];
$first_name = "";
if(isset($_POST['first_name'])){$first_name = $_POST['FirstName'];}
$last_name = "";
if(isset($_POST['last_name'])){$last_name = $_POST['LastName'];}
// Validate the inputs
if (empty($first_name) || empty($last_name)) {
$error = "Invalid product data. Check all fields and try again.";
include('../errors/error.php');
} else {
add_product($category_id, $first_name, $last_name);
// Display the Product List page for the current category
header("Location: .?category_id=$category_id");
}
} else if ($action == 'list_categories') {
$categories = get_categories();
include('category_list.php');
} else if ($action == 'add_category') {
$first_name = $_POST['FirstName'];
// Validate inputs
if (empty($name)) {
$error = "Invalid category name. Check name and try again.";
include('view/error.php');
} else {
add_category($name);
header('Location: .?action=list_categories'); // display the Category List page
}
} else if ($action == 'delete_category') {
$category_id = $_POST['category_id'];
delete_category($category_id);
header('Location: .?action=list_categories'); // display the Category List page
}
?>
とPHP add_product
関数は= text
ないinput
タイプを使用してみてください。 <input type="text" name="last_name" />
など。
このコードには問題があります。
if(isset($_POST['first_name'])){$first_name = $_POST['FirstName'];}
if(isset($_POST['last_name'])){$first_name = $_POST['LastName'];}
は何であれ、あなたはFIRST_NAMEとして渡すと、あなたの$first_name
と$last_name
変数は空になりますLAST_NAME。 $_POST['FirstName'], $_POST['LastName']
を使用してそれぞれの値を設定しているため、実際には存在せず、両方ともNULL
を返します。以下のようにこれらの行を書き換え:MahfuzulAlamの答え@ほか
if(isset($_POST['first_name'])){$first_name = $_POST['first_name'];}
if(isset($_POST['last_name'])){$first_name = $_POST['last_name'];}
どのようなエラーが表示されますか? – ravisachaniya
@ravisachaniyaは、フォームのユーザー入力を受け入れるはずのPHPでは、入力を検証するif文が空であるか、入力が空である場合を実行しません。 –
ようこそスタックオーバーフロー! [ask]と[mcve]を参照してください。 – Mat