Filter that allows only files of special types(pdf, doc etc)

Questions Components & MVC
,
1

Do we have input filters that allows the user to upload file of specific types (pdf, doc, ,.odt etc) and do not permit to upload files of type - .png, jpg etc.

2

Please have a look at the validators for files in the documentation:

3

In the following snippet the execution never goes into the MyValidator:

 private function addInputFilter() 
    {   
        $inputFilter = new InputFilter();        
        
        // File Input
        $fileInput = new FileInput('fieldOne');
        
        $isRequired = false;		
        if($this->scenario == 'create')
            $isRequired = true;
        $fileInput->setRequired($isRequired);
        
        $fileInput->getFilterChain()->attachByName(
            'filerenameupload',
            [
                'target'    => './data/documents/formtemplate',
                'use_upload_extension' => true,
            ]
        );
        $inputFilter->add($fileInput);
        $this->setInputFilter($inputFilter);		
        // Only allow 'pdf
        $fileValidator = new MimeType('application/pdf');
		// Perform validation
        if ($fileValidator->isValid('./myfile.pdf')) {
            // file is valid
        }	
              
        $inputFilter->add([
            'name'     => 'fieldOne',
            'required' => true,               
            'validators' => [
                [
                    'name'    => MyValidator::class,
                    'options' => [
                        'item' => $this->fieldOne,
                        'scenario' => $this->scenario,
                        'itemType' => 'fieldOne',
                        'max' => 128,
                    ],
                ],
            ],
        ]);

    }

My objective is to have the file-type validation logic in MyValidator, that is the following code segment need to be in MyValidator:

 $fileValidator = new MimeType('application/pdf');
		// Perform validation
        if ($fileValidator->isValid('./myfile.pdf')) {
            // file is valid
        }

But I am stuck in the basic thing - execution don’t go in there at all.

4

Add the Mime validator to your input filter:

$inputFilter = new Laminas\InputFilter\InputFilter();
$inputFilter->add(
    [
        'type'       => Laminas\InputFilter\FileInput::class,
        'name'       => 'fieldOne',
        'required'   => $this->scenario === 'create',
        'filters'    => [
            [
                'name'    => Laminas\Filter\File\RenameUpload::class,
                'options' => [
                    'target'               => './data/documents/formtemplate',
                    'use_upload_extension' => true,
                ],
            ],
            // add here other filters…
        ],
        'validators' => [
            [
                'name'    => Laminas\Validator\File\MimeType::class,
                'options' => [
                    'mimeType' => 'application/pdf',
                ],
            ],
            // add here other validators…
        ],
    ]
);