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How to download files in Zend Framework 2?

I am viewing file upload in ZF2.

I understand that many of you will think this is too vague a question, but what is the best way to create form elements that are slightly processed?

I can’t figure out where to start. I ruled out processing it in the controller, as this would violate the DRY principles. The form object does not seem to have a place to “plug in” any code. The view helper is just for presentation, so there is no point in doing anything. Thus, this leaves an input filter. This also seems wrong.

I was sent to transfer adapters, but the code does not look very ZF2.

I am sorry that this is such a vague question, and I hope that he will fall into pretty ears. He is diligently studying a structure that has very little documentation and is compounded by the fact that my knowledge of zend framework 1 is a little subtle, progress a bit slow.

As soon as I have a good work example, I may find a place to publish.

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5 answers

it's simple:
[In your controller]

$request = $this->getRequest(); if($request->isPost()) { $files = $request->getFiles()->toArray(); $httpadapter = new \Zend\File\Transfer\Adapter\Http(); $filesize = new \Zend\Validator\File\Size(array('min' => 1000 )); //1KB $extension = new \Zend\Validator\File\Extension(array('extension' => array('txt'))); $httpadapter->setValidators(array($filesize, $extension), $files['file']['name']); if($httpadapter->isValid()) { $httpadapter->setDestination('uploads/'); if($httpadapter->receive($files['file']['name'])) { $newfile = $httpadapter->getFileName(); } } }

UPDATE : I found a better way to use file validation using form validation:
Add this class to your module, for example: Application / Validators / File / Image.php

 <?php namespace Application\Validators\File; use Application\Validator\FileValidatorInterface; use Zend\Validator\File\Extension; use Zend\File\Transfer\Adapter\Http; use Zend\Validator\File\FilesSize; use Zend\Filter\File\Rename; use Zend\Validator\File\MimeType; use Zend\Validator\AbstractValidator; class Image extends AbstractValidator { const FILE_EXTENSION_ERROR = 'invalidFileExtention'; const FILE_NAME_ERROR = 'invalidFileName'; const FILE_INVALID = 'invalidFile'; const FALSE_EXTENSION = 'fileExtensionFalse'; const NOT_FOUND = 'fileExtensionNotFound'; const TOO_BIG = 'fileFilesSizeTooBig'; const TOO_SMALL = 'fileFilesSizeTooSmall'; const NOT_READABLE = 'fileFilesSizeNotReadable'; public $minSize = 64; //KB public $maxSize = 1024; //KB public $overwrite = true; public $newFileName = null; public $uploadPath = './data/'; public $extensions = array('jpg', 'png', 'gif', 'jpeg'); public $mimeTypes = array( 'image/gif', 'image/jpg', 'image/png', ); protected $messageTemplates = array( self::FILE_EXTENSION_ERROR => "File extension is not correct", self::FILE_NAME_ERROR => "File name is not correct", self::FILE_INVALID => "File is not valid", self::FALSE_EXTENSION => "File has an incorrect extension", self::NOT_FOUND => "File is not readable or does not exist", self::TOO_BIG => "All files in sum should have a maximum size of '%max%' but '%size%' were detected", self::TOO_SMALL => "All files in sum should have a minimum size of '%min%' but '%size%' were detected", self::NOT_READABLE => "One or more files can not be read", ); protected $fileAdapter; protected $validators; protected $filters; public function __construct($options) { $this->fileAdapter = new Http(); parent::__construct($options); } public function isValid($fileInput) { $options = $this->getOptions(); $extensions = $this->extensions; $minSize = $this->minSize; $maxSize = $this->maxSize; $newFileName = $this->newFileName; $uploadPath = $this->uploadPath; $overwrite = $this->overwrite; if (array_key_exists('extensions', $options)) { $extensions = $options['extensions']; } if (array_key_exists('minSize', $options)) { $minSize = $options['minSize']; } if (array_key_exists('maxSize', $options)) { $maxSize = $options['maxSize']; } if (array_key_exists('newFileName', $options)) { $newFileName = $options['newFileName']; } if (array_key_exists('uploadPath', $options)) { $uploadPath = $options['uploadPath']; } if (array_key_exists('overwrite', $options)) { $overwrite = $options['overwrite']; } $fileName = $fileInput['name']; $fileSizeOptions = null; if ($minSize) { $fileSizeOptions['min'] = $minSize*1024 ; } if ($maxSize) { $fileSizeOptions['max'] = $maxSize*1024 ; } if ($fileSizeOptions) { $this->validators[] = new FilesSize($fileSizeOptions); } $this->validators[] = new Extension(array('extension' => $extensions)); if (! preg_match('/^[a-z0-9-_]+[a-z0-9-_\.]+$/i', $fileName)) { $this->error(self::FILE_NAME_ERROR); return false; } $extension = pathinfo($fileName, PATHINFO_EXTENSION); if (! in_array($extension, $extensions)) { $this->error(self::FILE_EXTENSION_ERROR); return false; } if ($newFileName) { $destination = $newFileName.".$extension"; if (! preg_match('/^[a-z0-9-_]+[a-z0-9-_\.]+$/i', $destination)) { $this->error(self::FILE_NAME_ERROR); return false; } } else { $destination = $fileName; } $renameOptions['target'] = $uploadPath.$destination; $renameOptions['overwrite'] = $overwrite; $this->filters[] = new Rename($renameOptions); $this->fileAdapter->setFilters($this->filters); $this->fileAdapter->setValidators($this->validators); if ($this->fileAdapter->isValid()) { $this->fileAdapter->receive(); return true; } else { $messages = $this->fileAdapter->getMessages(); if ($messages) { $this->setMessages($messages); foreach ($messages as $key => $value) { $this->error($key); } } else { $this->error(self::FILE_INVALID); } return false; } } }

Use in form and add filterInput:

  array( 'name' => 'file', 'required' => true, 'validators' => array( array( 'name' => '\Application\Validators\File\Image', 'options' => array( 'minSize' => '64', 'maxSize' => '1024', 'newFileName' => 'newFileName2', 'uploadPath' => './data/' ) ) ) )

And in your controller:

  $postData = array_merge_recursive((array)$request->getPost(), (array)$request->getFiles()); $sampleForm->setData($postData); if ($sampleForm->isValid()) { //File will be upload, when isValid returns true; } else { var_dump($sampleForm->getMessages()); }
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This is an old question, but in case someone else got here, I found this nice article:

Create a simple file verification upload form

This is a good start to working with files in ZF2.;)

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From what I asked / saw in irc (# Zftalk.2), the file component has not yet been reorganized

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to get $ _FILES, you do the following in the controller:

 $request= $this->getRequest(); if($request->isPost()){ $post= array_merge_recursive($request->getPost()->toArray(), $request->getFiles()->toArray()); print_r($post); }

This post is old, but I hope this helps someone.

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Downloading the factory file and checking scheduled for ZF2.1

While I'm using $ _FILES :(

Check out the following links:

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Source: https://habr.com/ru/post/921654/

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