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php - 提交 PHP 表单以将数据作为 XML 存储在文件中

问题描述

我已经设置了这个表格，目的是在我向其中添加详细信息时；标题、描述和情感文本字段，然后按提交，这些数据将作为 xml 存储在 php 文件中。

我正在努力设置控制器，以便在我提交表单时它实际存储这些数据。我将在下面提供的示例以前在我将它存储在我的数据库中时有效，但我现在想将它存储为 xml。

项目控制器 

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use Orchestra\Parser\Xml\Facade as XmlParser;

interface OutputType
{
public function generate();
}

//project class has been imported
use App\Project;

class ProjectsController extends Controller
{
public function index()
{
    //because the class has been imported we can reference it like this rather than '\App\Project::all();'
    $projects = Project::all();



//passing the JSON to the view

    return view ('projects.index', ['projects'=> $projects]); //can also use 'compact('projects') instead of the ['projects'=> $projects]
 }



//new method called create

public function create()
{

    return view ('projects.create');

}

//new method called store


public function store()
 {

  if (isset($_POST['submit'])) {
    $xmlType = new XMLType();
    $xmlType->createParent('programme', ['id' => 1])
            ->addElement('name', $_POST['name'], ['type' => 'string'])
            ->addElement('description', $_POST['description'])
            ->addElement('mood', $_POST['mood'])
            ->groupParentAndElements()
            ->createParent('others', ['id' => 2, 'attr' => 'ex'])
            ->addElement('example', 'A value here')
            ->groupParentAndElements();

    //whenever you wish to output
    $xmlType->generate();
 }



return view('projects.upload');
}


//changed this from upload to show
public function upload()
{


return view('projects.upload');
}

//changed this from upload to show
public function show()
{


return view ('projects.upload', compact('user'));
}

public function slider()
{


return view ('projects.upload', compact('user'));
}


}

Database.php（我想将提交的数据存储为 xml

<?
$xmlstr = <<<XML
<?xml version="1.0" encoding="UTF-8"?>
<programmeList>
<programme id="1">
 <name>School of Rock</name>
 <image>images/schoolofrock.jpg</image>
 <description>After being kicked out of a rock band, Dewey Finn becomes a substitute teacher </description>
 <mood>Agitated</mood>
 </programme>
<programme id="2">
<name>Pitch Perfect 2</name>
<image>images/pitchperfect2.jpg</image>
<description>After a humiliating command performance at The Kennedy       Center, the Barden Bellas enter an international competition that no American group has ever won in order to regain their status and right to perform.</description>
 <mood>Fearless</mood>
 </programme>
</programmeList>
XML;
?>

Create.php（查看）

 <link rel="stylesheet" href="CSS/app.css" type="text/css">
 <meta name = "viewport" content="width = device-width, initial-scale = 1">
  <link rel = "stylesheet" href = "https://www.w3schools.com. /lib/w3.css">
<!DOCTYPE html>
<html>
<head>
<title>Upload</title>
</head>
<body>
<!-- Sky logo + Sky cinema logo -->
<div class="box">
  <td style="text-align:center;color:black;font-size:50px;">
     <img src="/images/sky.png"  title="Sky" alt="Sky" width="auto" height="125" />
   </td>
   <td style="text-align: right;position: relative; color:black;font-size:50px;">
     <img src="/images/sky_cinema.png"  title="sky_cinema" alt="Sky" width="auto" height="125" />
   </td>
</div>

<div>
<ul class="w3-navbar w3-black">
<li><a href="/projects/upload">Moodslider Home</a></li>
<li><a href="/projects/create">Upload Content</a></li>
</ul>
</div>


<div>
     <h1>Upload a movie</h1>
</div>
<!--post request followed by an action which states where the data will be posted/returned -->

 <form method="POST" action="/projects">


 <form action="/projects/upload" method="post" enctype="multipart/form-data">
 {{ @csrf_field() }}
 <h4>Movie Title</h4><input type="text" name="name">
  <br/>
 <h4>Movie Description</h4><textarea name="description" rows="5" cols="50" wrap="physical">
 </textarea>
 <h4>Movie Emotion</h4>
  <input type="radio" name="mood" value="Agitated">Agitated<br>
  <input type="radio" name="mood" value="Calm">Calm<br>
  <input type="radio" name="mood" value="Happy">Happy<br>
  <input type="radio" name="mood" value="Sad">Sad<br>
  <input type="radio" name="mood" value="Tired">Tired<br>
  <input type="radio" name="mood" value="WideAwake">Wide Awake<br>
  <input type="radio" name="mood" value="Scared">Scared<br>
  <input type="radio" name="mood" value="Fearless">Fearless<br>
  <br/>
  Choose a file to upload: <input type="file" name="fileToUpload" id="fileToUpload" />
  <br/>
  <br/>
  <input type="submit" value="submit" name="submit" />
  </form>
</form>

</body>
</html>

XML类型

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

//import the interface above

class XMLType implements OutputType
{
    protected $xml;
    protected $parentElement;
    protected $elementGroup;

    public function __construct()
    {
        $this->xml= new \DOMDocument('1.0', 'ISO-8859-15');
    }

    public function createParent($type, $attributes = [])
    {
        $this->parentElement = $this->xml->createElement($type);
        $this->addAttributes($this->parentElement, $attributes);
        return $this;
    }

    private function addAttributes(&$element, $attributes)
    {
        if (sizeof($attributes) > 0) {
            foreach($attributes as $type => $value) {
                $element->setAttribute($type, $value);
            }
        }
    }

    public function addElement($type, $element, $attributes = [])
    {
         $this->elementGroup = $this->xml->createElement($type, $element);
         $this->addAttributes($this->elementGroup, $attributes);
         return $this;
    }

    public function groupParentAndElements()
    {
        $this->parentElement->appendChild($this->elementGroup);
        return $this;
    }

    public function generate()
    {
        $this->xml->appendChild($this->parentElement);
        print $this->xml->saveXML(); //here I am saving and printing but you can change to suit your needs. It is at this point it is ready to generate the XML
    } 

  }

标签： phpxmllaravel

解决方案

界面

        interface OutputType
        {
            public function generate();
        }

XML文件类

            //import the interface above

        class XMLType implements OutputType
        {
            protected $xml;

            protected $parentElement;
            protected $elementGroup;


            protected $parentList = [];
            protected $elementList = [];

            public function __construct()
            {
                $this->xml= new \DOMDocument('1.0', 'ISO-8859-15');
            }

            public function createParent($type, $attributes = [])
            {
                $this->parentElement = $this->xml->createElement($type);
                $this->addAttributes($this->parentElement, $attributes);

                return $this;
            }

            private function addAttributes(&$element, $attributes)
            {
                if (sizeof($attributes) > 0) {
                    foreach($attributes as $type => $value) {
                        $element->setAttribute($type, $value);
                    }
                }
            }

            public function addElement($type, $element, $attributes = [])
            {
                 $this->elementGroup  = $this->xml->createElement($type, $element);
                 $this->addAttributes($this->elementGroup, $attributes);
                 $this->elementList[] = $this->elementGroup;
                 return $this;
            }

            /**
             *  We wish to trigger this every time you want to ad d a new parent to
             *  hold new elements! So the program knows to close
             *  the previous one before starting a new and mesh all into one single
             *  element, which we do not want to!
            **/
            public function groupParentAndElements()
            {
                foreach($this->elementList as $prevElements) {
                    $this->parentElement->appendChild($prevElements);
                }

                $this->parentList[] = $this->parentElement;
                $this->elementList = [];

                return $this;
            }

            public function generate()
            {
                //Uses filled parentList where each parent contains its child elements to generate the XML
                foreach ($this->parentList as $prevParent) {
                    $this->xml->appendChild($prevParent);    
                }

                //here I am saving and printing but you can change to suit your needs.
                //It is at this point it is ready to generate the XML
                print $this->xml->saveXML(); 
            } 

        }

您希望在哪里使用 XML 类

            if (isset($_POST['submit'])) {
                $xmlType = new XMLType();
                $xmlType->createParent('programme', ['id' => 1])
                        ->addElement('name', $_POST['name'], ['type' => 'string'])
                        ->addElement('description', $_POST['description'])
                        ->addElement('mood', $_POST['mood'])
                        ->groupParentAndElements()
                        ->createParent('others', ['id' => 2, 'attr' => 'ex'])
                        ->addElement('example', 'A value here')
                        ->groupParentAndElements();

                //whenever you wish to output
                $xmlType->generate();
            }

输出

            <programme id="1">
                <name type="string">
                    //your post name
                </name>
                <description>
                    //your post description
                </description>
                <mood>
                    //your post mood
                </mood>
            </programme>
            <others id="2" attr="ex">
               <example>
                   A value here
               </example>
            </others>

您可以随时向该类添加额外的元素，如注释、类型等，这将取决于您的 XML 需求。只需要遵循结构甚至更进一步:)

工作代码示例

将 XML 内容存储到文件中

interface FileCreationContract
{
    public function create($content);
}


class XMLFile implements FileCreationContract
{

    const REGEX_EXTENTION_LOOKOUT = '/\.[^.]+$/';
    const EXTENTION = '.xml';

    protected $path;
    protected $filename;

    public function __construct ($filename, $path = '')
    {
        $this->filename = $filename;
        $this->parseFilename();

        if (empty($this->path)) {
            $this->path = realpath(__DIR__);
        }
    }

    /**
     * If programmer mistakes and adds extention, removes it to make sure the wrong extention was not added;
     */
    private function parseFilename()
    {
        if ( strpos($this->filename, self::EXTENTION) === FALSE ) {
            $this->filename = preg_replace(self::REGEX_EXTENTION_LOOKOUT, '', $this->filename) . self::EXTENTION;
        }

        if (empty($this->filename)) {
            $this->filename = 'default-name'.self::EXTENTION;
        }
    }

    /**
     * @return mixed
     */
    public function getPath ()
    {
        return $this->path;
    }

    /**
     * @param mixed $path
     *
     * @return XMLFile
     */
    public function setPath ($path)
    {
        $this->path = $path;
        return $this;
    }

    /**
     * @return mixed
     */
    public function getFilename ()
    {
        return $this->filename;
    }

    /**
     * @param mixed $filename
     *
     * @return XMLFile
     */
    public function setFilename ($filename)
    {
        $this->filename = $filename;
        $this->parseFilename();
        return $this;
    }

    public function create ($content)
    {
        $file = fopen($this->path.$this->filename, 'w') or die("Unable too open file!"); //I recommend throwing an exception here!
        fwrite($file, $content);
        fclose($file);
    }

}

在您的控制器上，在构建 XML 内容之后

...
$xmlFile = new XMLFile('database.php', 'path/to/your/public/folder/');
$xmlFile->create($xmlType->generate());
...

注意：从课堂上替换print为return您的generate()方法XMLType

这个新类将确保您的文件名遵循预期.xml的保存格式。在调用之前，您始终可以覆盖路径以在构造函数级别保存文件或调用->setPath('new/path/');替换它create()；

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