Generate xml file programmatically

Question

I need to generate an .xml file from my extension. Inside Namespace/Module/view/adminhtml/ui_component/ folder,

I need to do this pro-grammatically because the .xml file will be generated based on data collection, is there a way to do this?

Answer 1

For now i'm using php original function to write/create file inside my extension directory like this:

    public function __construct(
      \Magento\Framework\Module\Dir\Reader $moduleReader
      )
    {
        $this->customAttribute = $customAttribute;
        $baseDir = $moduleReader->getModuleDir('', 'Namespace_Module');
        $this->dir = $baseDir . '/view/adminhtml/ui_component';
    }

    public function writeFile() {
        $dir = $this->dir;
        $fileName = 'test.xml';
        $content =  '<test>Test</test>';

        $myfile = fopen($dir . '/' . $fileName, "w") or die("Unable to open file!");
        try {
          fwrite($myfile, $content);
          fclose($myfile);
        } catch (Exception $e) {
          $this->_logger($e->getMessage());
        }
        return;
     }

if there's more proper way to do it in Magento 2 please let me know, and i will accept the answer for this question, but for now if anyone want to use this as a solution it's working properly for me but i do not recommend it

Answer 2

If you would like to try another way, maybe use Magento\Framework\Filesystem\Io\File and Magento\Framework\Convert\ConvertArray. ConvertArray is useful to make an xml file from a multidimensional array and File can write it for you (and check permissions, create directories and more). Here is a basic example:

public function __construct(
    \Magento\Framework\Filesystem\Io\File $file,
    \Magento\Framework\Convert\ConvertArray $convertArray
)
{
    $this->file = $file;
    $this->convertArray = $convertArray;
}

public function createMyXmlFile($assocArray, $rootNodeName, $filename = 'file.xml')
{
   // ConvertArray function assocToXml to create SimpleXMLElement
   $simpleXmlContents = $this->convertArray->assocToXml($assocArray,rootNodeName);
   // convert it to xml using asXML() function
   $content = $simpleXmlContents->asXML();
   $this->file->write($filename, $contents);
}

if my array is :

$myArray = array(
  'fruit' => 'apple',
  'vegetables' => array('vegetable_1' => 'carrot', 'vegetable_2' => 'tomato'),
  'meat' => 'none',
  'sweets' => 'chocolate');

and I call my function:

$simpleXmlContents =  $this->convertArray->assocToXml($myArray, 'diner');
$this->file->write($myXmlFile,$simpleXmlContents->asXML());

I would get the following in myfile.xml:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<diner><fruit>apple</fruit><vegetables><vegetable_1>carrot</vegetable_1> 
<vegetable_2>tomato</vegetable_2></vegetables><meat>none</meat> 
<sweets>chocolate</sweets></diner>