使用循环使用 Codeigniter/Activerecord 执行多个 SQL 插入

Question

我有一个如下所示的数组：

Array
(
[currency] => GBP
[shipping] => 3.5
[tax] => 0
[taxRate] => 0
[itemCount] => 3

[item_name_1] => Proletarian Sparrow
[item_quantity_1] => 2
[item_price_1] => 75

[item_name_2] => Guillemot Colony
[item_quantity_2] => 5
[item_price_2] => 20

[item_name_3] => Dandelion Clock
[item_quantity_3] => 2
[item_price_3] => 50
)

我正在尝试使用循环来提取单个项目的详细信息，并在数据库中为每个项目插入一行。我正在使用 Codeigniter。

我的模型如下所示：

public function set_order($cust_id, $order_data)
{

    // Breaks up order information and creates a new row in the pn_orders tables for each item

    // Get the last row in the orders table so we can work out the next order_id
    $this->db->order_by('order_id', 'desc');
    $this->db->limit(1);
    $query = $this->db->get('pn_orders'); 

    $row = $query->row_array(); 

    // If the resulting array is empty, there are no orders so we can set the order_id to 1. If there is already an order_id, just add 1 to it.
    if (empty($row)) {
        $order_id = 1;
    } else {
        $order_id = $row['order_id'] + 1;
    }

    //echo "<pre>";
    //print_r($order_data);
    //echo "</pre>";

    // The delivery message input has a placeholder. if the user's input is different to this, assign it to $delivery_message.
    if ($this->input->post('delivery_message') == "e.g. if out, leave in porch") {
      $delivery_message = NULL;
    } else {
      $delivery_message = $this->input->post('delivery_message');
    }

    // Set today's date for insertion into the DB
    $date = date('Y-m-d');

    // The order information is clumped together in a single array. We have to split out single items by looping through the array before inserting them into the DB.
    for ($i = 1; $i <= $order_data['itemCount']; $i++) {

        $item = array(
            'order_id' => $order_id,
            'cust_id' => $cust_id,
            'date_ordered' => $date,
            'item_name' => $order_data["item_name_{$i}"],
            'item_quantity' => $order_data["item_quantity_{$i}"],
            'item_price' => $order_data["item_price_{$i}"],
            'payment_method' => $_POST['payment_method'],
            'delivery_message' => $delivery_message
        );

        $this->db->insert('pn_orders', $item);

     }

}

一切似乎都已经到位，但是，只插入了 1 行，我不知道为什么。看起来很简单。

这和 Activerecord 模式有关吗？

谢谢。

Answer 1

先print out数组，看看array structure is correct or not。如果没问题，那么只需像这样使用insert_batch：

for ($i = 1; $i <= $order_data['itemCount']; $i++) {
    $items[] = array(
        'order_id' => $order_id,
        'cust_id' => $cust_id,
        'date_ordered' => $date,
        'item_name' => $order_data["item_name_{$i}"],
        'item_quantity' => $order_data["item_quantity_{$i}"],
        'item_price' => $order_data["item_price_{$i}"],
        'payment_method' => $_POST['payment_method'],
        'delivery_message' => $delivery_message
    );
}
//echo "<pre>";print_r($item);echo "</pre>";die;   uncomment to see the array structure
$this->db->insert_batch('pn_orders', $items);