How to get uploadedFile array from PHP form - php

Question

I am new to PHP. I succeeded in uploading single image to a form and saving it in the database. But when I modify that to upload multiple images, I get an error saying
The form's view data is expected to be an instance of class Symfony\Component\HttpFoundation\File\File, but is a(n) array.
class SatelliteImages
{
/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var array
*/
private $files= array();
/**
* Get id
*
* #return int
*/
public function getId()
{
return $this->id;
}
/**
*Set files
*
* #param UploadedFile[] $files
*/
public function setFiles($files)
{
$this->files = $files;
//return $this;
}
/**
* Get files
*
* #return UploadedFile[]
*/
public function getFiles()
{
return $this->files;
}
/**
* #param satelliteImage[] $images
*
* #return satelliteImage[]
*
*/
public function upload($images){
foreach ($this->getFiles() as $key => $file) {
$images[$key]->setImage(file_get_contents($file));
}
return $images;
}
}
This is the SatelliteImage entity(single image)
class satelliteImage
{
/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var float
*
* #ORM\Column(name="latitude", type="float")
*/
private $latitude;
/**
* #var float
*
* #ORM\Column(name="longitude", type="float")
*/
private $longitude;
/**
* #var string
*
* #ORM\Column(name="image", type="blob", nullable=true))
*/
private $image;
/**
* #ORM\Column(type="string", length=255, nullable=true)
*/
public $path;
/**
* Get id
*
* #return int
*/
public function getId()
{
return $this->id;
}
/**
* Set latitude
*
* #param float $latitude
*
* #return satelliteImage
*/
public function setLatitude($latitude)
{
$this->latitude = $latitude;
return $this;
}
/**
* Get latitude
*
* #return float
*/
public function getLatitude()
{
return $this->latitude;
}
/**
* Set longitude
*
* #param float $longitude
*
* #return satelliteImage
*/
public function setLongitude($longitude)
{
$this->longitude = $longitude;
return $this;
}
/**
* Get longitude
*
* #return float
*/
public function getLongitude()
{
return $this->longitude;
}
/**
* Set image
*
* #param string $image
*
* #return satelliteImage
*/
public function setImage($image)
{
$this->image = $image;
return $this;
}
/**
* Get image
*
* #return string
*/
public function getImage()
{
return $this->image;
}
/**
* Get path
*
* #return string
*/
public function getPath()
{
return $this->path;
}
public function getAbsolutePath()
{
return null === $this->path
? null
: $this->getUploadRootDir().'/'.$this->path;
}
public function getWebPath()
{
return null === $this->path
? null
: $this->getUploadDir().'/'.$this->path;
}
protected function getUploadRootDir()
{
// the absolute directory path where uploaded
// documents should be saved
return __DIR__.'/../../../../web/'.$this->getUploadDir();
}
protected function getUploadDir()
{
// get rid of the __DIR__ so it doesn't screw up
// when displaying uploaded doc/image in the view.
return 'uploads/documents';
}
/**
* #Assert\File(maxSize="6000000")
*/
private $file;
/**
* Sets file.
*
* #param UploadedFile $file
*/
public function setFile(UploadedFile $file = null)
{
$this->file = $file;
}
/**
* Get file.
*
* #return UploadedFile
*/
public function getFile()
{
return $this->file;
}
public function upload()
{
// the file property can be empty if the field is not required
if (null === $this->getFile()) {
return;
}
$imgFile=$this->getFile();
$this->setImage(file_get_contents($imgFile));
// clean up the file property as you won't need it anymore
$this->file = null;
}
}
In my controller, how can I create an array of images and pass it to the above function?
/**
* #Route("/uploads", name="upload_images")
*
*/
public function uploadImages(Request $request)
{
$images=new Images();
$form = $this->createForm(ImageFile::class, $images);
$form->handleRequest($request);
$em=$this->getDoctrine()->getManager();
$images->upload(????);
}
ImageFile class:
class ImageFile extends AbstractType
{
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('files', FileType::class, array(
'attr' => array(
'accept' => 'image/*',
'multiple' => 'multiple'
)
))
->add('save',SubmitType::class,array('label'=>'Insert Image','attr'=>array('class'=>'btn btn-primary','style'=>'margin-bottom:15px')))
;
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => SatelliteImages::class
));
}
}

Answer 1

This code right here is a problem:
/**
* #Assert\File(maxSize="60000000")
*/
private $files= array();
You need to fix that. You are asserting it's a file, but then you specify that it's an array!
EDIT #2
Your upload function has a problem too. You are returning the same parameter that you are passing in ($images). So you need to change it like so:
/**
* #param satelliteImage[] $images
*
* #return satelliteImage[]
*
*/
public function upload($images){
foreach ($this->getFiles() as $key => $file) {
$img[$key]->setImage(file_get_contents($file));
}
return $img;
}
EDIT #3
The buildForm function seems ok. In your Controller, I think you need to create the class and load the form like this:
$images = new SatelliteImages();
$form = $this->createFormBuilder($images);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$images = $form->getData();
$em = $this->getDoctrine()->getManager();
$em->persist($images);
$em->flush();
return $this->redirectToRoute('some_path');
}
Can you try it? Not sure if that's the problem or not.

Answer 2

SOLUTION
I managed to resolve previous issue by changing 'FileType' to 'CollectionType' in imageFile class's buildForm() function
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('files', CollectionType::class, array(
'attr' => array(
'accept' => 'image/*',
'multiple' => 'multiple'
)
))
->add('save',SubmitType::class,array('label'=>'Insert Image','attr'=>array('class'=>'btn btn-primary','style'=>'margin-bottom:15px')))
;
}
I also changed the 'files' like this
/**
* #var array
*/
private $files;
public function __construct()
{
$this->files = new ArrayCollection();
}
However, when I do that, the 'browse images' button disappears from the view. Any suggestions to fix that?
I also tried removing the construct() function. When I do that, it gives me an error in the controller saying "invalid argument supplied for foreach"