Dropzone and non-object error - php

Question

I'm trying to implement dropzonejs file upload on my website, but I'm getting this error
{"error":{"type":"Symfony\\Component\\Debug\\Exception\\FatalErrorException","message":"Call to a member function isValid() on a non-object","file":"C:\\Users\\Username\\Desktop\\localhost\\Project\\app\\controllers\\FileController.php","line":147}}
I have this inside the head tag. I check if the file is an Image and then check the dimensions before sending the file in to the controller. If the file is not an image I send it straight to the controller.
<script type="text/javascript">
$(function() {
Dropzone.options.createFile = {
accept: function(file, done) {
// checking if the filetype is an image to check the dimensions
if ((/\.(gif|jpg|jpeg|tiff|png)$/i).test(file.name)) {
var pixels = 0;
var reader = new FileReader();
reader.onload = (function(file) {
var image = new Image();
image.src = file.target.result;
image.onload = function() {
width = this.width;
height = this.height;
if(width < 800 || height < 300) {
done('image is not 800x300 pixels!');
} else {
done();
}
};
});
reader.readAsDataURL(file);
} else {
// if the file is not an image
done();
}
},
url: '/process/create-file',
previewsContainer: ".dropzone-previews",
uploadMultiple: true,
parallelUploads: 100,
maxFiles: 100,
}
});
</script>
This is the stripped controller, I removed a chunk of the code to make it shorter. Because the error is right at the top.
public function postCreateFile()
{
if(!Input::hasFile('file'))
return Response::json('Where is the file?', 400);
$file = Input::file('file');
if($file->isValid()){
// do stuff
}
}
if I add return var_dump($file) before the $file->isValid() line I get this response
array (size=2) '_token' => string 'BtN7aFkEUQvXlaJDzxx28e4WMI08h5bl3VqrEaHR' (length=40) 'file' => array (size=1) 0 => object(Symfony\Component\HttpFoundation\File\UploadedFile)[9] private 'test' => boolean false private 'originalName' => string '65VWl.jpg' (length=9) private 'mimeType' => string 'image/jpeg' (length=10) private 'size' => int 260740 private 'error' => int 0
And here is the form. I have enctype and files set to true, but still I get an error with a message "non-object" as described above.
{{ Form::open(array('class' => 'dropzone', 'id' => 'create-file', 'url' => 'process/create-file', 'enctype' => 'multipart/form-data', 'files' => true)) }}
<div class="dropzone-previews" id="giga-drop">
<div class="fallback">
{{ Form::file('file') }}
</div>
</div>
{{ Form::close() }}
Any ideas why am I getting this error?

Answer 1

Thanks for #Maerlyn for pointing out it was an array.
Also I found this link that I didn't notice when searching before Laravel and Dropzonejs, files are not uploaded correctly
I had to modify my $file variable to this:
$file = Input::file('file'); // didn't work
$file = Input::file('file')[0]; // works