基于选择值的 OOP PHP

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【中文标题】基于选择值的 OOP PHP【英文标题】:OOP PHP based on select values 【发布时间】:2016-02-18 09:03:20 【问题描述】:

我正在使用 php 中的 OOP 进行一些练习,但在提交涉及子类的表单数据时遇到了问题。

我正在尝试做的事情:根据产品的类型(通用、工具或电子)提交表单数据。我担心的是无法提交可以区分不同产品类型的表单。

这是Product Class(基类):

<?php
require_once('connectvars.php');

// Base class!!
class Product 
    // Inheritable properties
    protected $title;
    protected $description;
    protected $price;

    // Getters
    public function getTitle() 
        return $this->title;
    
    public function getDescription() 
        return $this->description;
    
    public function getPrice() 
        return $this->price;
    

    // Setters
    public function setTitle($title) 
        $this->title = $title;
    
    public function setDescription($description) 
        $this->description = $description;
    
    public function setPrice($price) 
        $this->price = $price;
    

    public function insertProduct() 
        $dbc    = mysqli_connect(DB_HOST, DB_USER, DB_PW, DB_NAME);
        $query  = "INSERT INTO addedProducts VALUES (0,'$this->title', '$this->description', '$this->price', '', '', '')";

        mysqli_query($dbc, $query)
            or die("Error adding to database");

        mysqli_close($dbc);
    

?>

这是我创建的子类Tools

<?php
require_once('connectvars.php');
require_once('Product.php');

class Tools extends Product 
    // Defined properties specific to Tools class
    private $shipper;
    private $weight;

    // Getters
    public function getShipper() 
        return $this->shipper;
    
    public function getWeight() 
        return $this->weight;
    

    // Setters
    public function setShipper($shipper) 
        $this->shipper = $shipper;
    
    public function setWeight($weight) 
        $this->weight = $weight;
    

    public function insertTool() 
        $dbc    = mysqli_connect(DB_HOST, DB_USER, DB_PW, DB_NAME);
        $query  = "INSERT INTO addedProducts VALUES (0,'$this->title', '$this->description', '$this->price', '$this->shipper', '$this->weight', '')";

        mysqli_query($dbc, $query)
            or die("Error adding to database");

        mysqli_close($dbc);
    

?>

这是我遇到问题的地方:

<!DOCTYPE html>
<html>
<head>
   <title>Product Entry</title>
</head>
<body>
    <select name="prodType" id="prodType">
        <option value="" selected="selected">Select...</option>
        <option value="general">General</option>
        <option value="tools">Tools</option>
        <option value="electronics">Electronics</option>
    </select>
    <br/><br/>
<?php
//require_once('connectvars.php');
require_once('Product.php');
require_once('Electronics.php');
require_once('Tools.php');

$product    = new Product();
$tool       = new Tools();
$electronic = new Electronics();

if (isset($_POST['submit']) && (isset($_POST['prodType']) == 'general')) 
    $product_form = false;

    $product->setTitle($_POST['title']);
    $product->setDescription($_POST['description']);
    $product->setPrice($_POST['price']);             

    $product->insertProduct();

    /*$tool->setTitle($_POST['title']);
    $tool->setDescription($_POST['description']);
    $tool->setPrice($_POST['price']);
    $tool->setShipper($_POST['shipper']);
    $tool->setWeight($_POST['weight']);
    if (!empty($tool->getTitle()) && !empty($tool->getDescription()) &&     is_numeric($tool->getPrice()) && !empty($tool->getShipper()) && !empty($tool-    >getWeight())) 
        echo 'Tool submitted <br/>';
        //echo '<a href="addProduct.php">Go Back</a>';
        $tool->insertTool();
    
 else 
    $product_form = true;


if ($product_form) 
?>
    <form method="POST" action="<?php echo $_SERVER['PHP_SELF'];?>">
        <label for="title"><strong>Product Title</strong></label>
        <br/>
        <input type="text" id="title" name="title" value="<?php echo $product->getTitle();?>"/>
        <br/><br/>
        <label for="description"><strong>Description</strong></label>
        <br/>
        <input type="text" id="description" name="description" value="<?php echo $product->getDescription();?>"/>
        <br/><br/>
        <label for="price"><strong>Price</strong></label>
        <br/>
        <input type="text" id="price" name="price" value="<?php echo $product->getPrice();?>"/>
        <br/><br/>            
         <!--For Tools -->
        <label for="shipper"><strong>Shipper Info</strong></label>
        <br/>
        <select name="shipper" id="shipper">
            <option value="none" selected="selected">--</option>
            <option value="usps">USPS</option>
            <option value="fedex">FedEx</option>
            <option value="ups">UPS</option>
        </select>
        <br/><br/>
        <label for="weight"><strong>Weight</strong></label>
        <br/>
        <input type="text" id="weight" name="weight" value="<?php echo $tool->getWeight();?>"/>
        <br/><br/>            
         <!--For Electronics -->
        <label for="recyclable"><strong>Recyclable?</strong></label>
        <br/>
        <select name="recyclable" id="recyclable">
            <option value="none" selected="selected">--</option>
            <option value="yes">Yes</option>
            <option value="no">No</option>
        </select>            
        <br/><br/>
        <input type="submit" id="submit" name="submit" value="Submit Product"/>
    </form>
<?php

?>
</body>
</html>

我确信有一个相当简单的解决方案,但我不再正确地考虑这个问题了 -_-。有什么建议吗?

【问题讨论】:

实际行为是什么?有错误提示吗? @FelisCatus,没有错误消息--当我选择“常规”并按提交时,表单清除但没有任何内容发送到数据库 将您的 prodType 选择选项放入表单中。 Thia 可能会解决您的问题 在哪里选择“一般”。我错过了select 框吗? 【参考方案1】:

我会做以下事情:

    将所有计算移至文件顶部。 将您的 prodType 移到表单中。 我总是显示表单。一种是编辑,另一种是创建。但是您需要为“product_id”添加一个隐藏输入

像这样:

<?php
require_once('Product.php');
require_once('Electronics.php');
require_once('Tools.php');

$product    = new Product();
$tool       = new Tools();
$electronic = new Electronics();
if (isset($_POST['submit']))
     $prodType = $_POST['prodType'];
     if($prodType == 'general') 
        $product_form = false;
        $product->setTitle($_POST['title']);
        $product->setDescription($_POST['description']);
        $product->setPrice($_POST['price']);             
        $product->insertProduct();
     else if($prodType == 'tools') 

     else if ($prodType == 'elecronics') 
     else 
        // echo this message in the form. 
        $msg = 'Invalid product type';
    

?>
<!DOCTYPE html>
<html>
<head>
    <title>Product Entry</title>
</head>
<body>
<form method="POST" action="<?php echo $_SERVER['PHP_SELF'];?>">
    <select name="prodType" id="prodType">
        <option value="" selected="selected">Select...</option>
        <option value="general">General</option>
        <option value="tools">Tools</option>
        <option value="electronics">Electronics</option>
    </select>
    <br/><br/>
    <label for="title"><strong>Product Title</strong></label>
    <br/>
    <input type="text" id="title" name="title" value="<?php echo $product->getTitle();?>"/>
    <br/><br/>
    <label for="description"><strong>Description</strong></label>
    <br/>
    <input type="text" id="description" name="description" value="<?php echo $product->getDescription();?>"/>
    <br/><br/>
    <label for="price"><strong>Price</strong></label>
    <br/>
    <input type="text" id="price" name="price" value="<?php echo $product->getPrice();?>"/>
    <br/><br/>            
    <!--For Tools -->
    <label for="shipper"><strong>Shipper Info</strong></label>
    <br/>
    <select name="shipper" id="shipper">
        <option value="none" selected="selected">--</option>
        <option value="usps">USPS</option>
        <option value="fedex">FedEx</option>
        <option value="ups">UPS</option>
    </select>
    <br/><br/>
    <label for="weight"><strong>Weight</strong></label>
    <br/>
    <input type="text" id="weight" name="weight" value="<?php echo $tool->getWeight();?>"/>
    <br/><br/>            
    <!--For Electronics -->
    <label for="recyclable"><strong>Recyclable?</strong></label>
    <br/>
    <select name="recyclable" id="recyclable">
        <option value="none" selected="selected">--</option>
        <option value="yes">Yes</option>
        <option value="no">No</option>
    </select>            
    <br/><br/>
    <input type="submit" id="submit" name="submit" value="Submit Product"/>
</form>
</body>
</html>

注意:您应该使用和学习composer。它是自动加载类文件的必备工具。

【讨论】:

我可以让它正确提交“一般”产品,但不能提交“工具”产品。这是我正在尝试进行的验证:if (isset($_POST['submit']) &amp;&amp; (isset($_POST['prodType']) == 'tools')) //$tool-&gt;insertTool(); 注意:我创建了用于提交一般产品的验证(如您上面建议的)之后,我正在尝试这样做 谢谢!过去几天我一直在“放屁”,而这正是我想要做的!

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