Code generation for the inventory transfer approval function in the PHP inventory management system

Code generation for the inventory allocation approval function in the PHP inventory management system

With the vigorous development of e-commerce, inventory management has become a part of enterprise management that cannot be ignored. Inventory transfer is a common operation for enterprises. It can help enterprises achieve reasonable allocation of inventory, improve inventory utilization, and avoid wastage of funds or fatal problems caused by excess or insufficient inventory. In order to ensure the accuracy and legality of inventory transfers, many companies need to introduce an approval mechanism.

In the PHP inventory management system, it is very important to implement the inventory transfer approval function. This article will use code examples to help readers quickly understand how to write code for the inventory transfer approval function.

1. Database design

First, we need to design a database table to store data related to inventory transfer. The following is a simplified inventory transfer table design example:

CREATE TABLE `inventory_transfer` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `from_warehouse_id` int(11) NOT NULL,
  `to_warehouse_id` int(11) NOT NULL,
  `product_id` int(11) NOT NULL,
  `quantity` int(11) NOT NULL,
  `status` enum('pending','approved','rejected') NOT NULL DEFAULT 'pending',
  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
);

The above table contains the following fields:

• id: the unique identifier of the inventory transfer record Symbol
• from_warehouse_id: Source warehouse ID
• to_warehouse_id: Target warehouse ID
• product_id : Product ID
• quantity: Allocation quantity
• status: Allocation approval status, which can be pending, approved or rejected
• created_at: record creation time

2. Transfer application page

First, we need to create code logic to handle data submission and verification on the transfer application page. The following is a simplified code example for the transfer application page:

<?php
// 处理表单提交
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  // 进行数据验证
  
  // 插入数据到数据库
  
  // 返回成功消息或错误消息
}
?>

<form action="stock_transfer.php" method="post">
  <!-- 表单字段 -->
  <input type="submit" value="Submit">
</form>

In the above code, we use $_SERVER["REQUEST_METHOD"] to check whether it is passed POSTData submitted by method. In actual development, we need to add more data verification and logical judgments here, such as checking whether the warehouse exists, whether the product is available, etc.

3. Transfer approval page

For the transfer approval page, we can create a list to display all transfer records to be approved, and provide an approval button for the administrator to operate. The following is a code example of a simplified transfer approval page:

<?php
// 查询待审批的调拨记录
$sql = "SELECT * FROM inventory_transfer WHERE status = 'pending'";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  while($row = $result->fetch_assoc()) {
    // 显示调拨记录的详细信息和审批按钮
  }
} else {
  echo "No pending transfers.";
}
?>

In the above code, we use a simple SQL query to obtain all transfer records to be approved, and display each record one by one through a loop details and approval button. In actual development, we can design more complex interfaces and approval logic based on actual needs.

4. Transfer approval processing

Finally, we need to create logic to handle the operations in the transfer approval page. The following is a simplified transfer approval processing code example:

<?php
// 处理审批操作
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  $transfer_id = $_POST["transfer_id"];
  $status = $_POST["status"];

  // 更新数据库中的调拨记录状态
  $sql = "UPDATE inventory_transfer SET status = '$status' WHERE id = $transfer_id";
  $conn->query($sql);
  
  // 返回成功消息或错误消息
}
?>

In the above code, we obtain the approval operation information submitted by the user through the POST method, and then update the corresponding transfer record in the database status. In actual development, we can add more operation processing logic according to actual needs, such as sending email notifications, updating inventory data, etc.

Summary:

This article demonstrates through code examples how to implement the inventory transfer approval function in the PHP inventory management system. We can easily implement this function by designing database tables, creating transfer application pages, transfer approval pages and approval processing logic. Of course, in actual development, we need to further optimize and improve according to specific needs, such as adding permission management, displaying approval history, etc. I hope this article will be helpful to readers in developing inventory management systems.

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