ZF 2.4 File Validator Required False Doesn't Work - zend-framework

Question

Today I updated to ZF 2.4 to use float validator but unfortunately i realized that my file upload form field gives unexpected error messages.
Here is my form object
$this->add([
'name' => 'profileimage',
'type' => '\Zend\Form\Element\File',
'attributes' => [
'id' => 'profileimage',
'class' => 'styled',
],
]
);
And Here is my validator
$inputFilter->add([
'name' => 'profileimage',
'required' => false,
'allow_empty' => true,
'priority' => 300,
'filters' => [
['name' => 'StripTags'],
['name' => 'StringTrim'],
],
'validators' => [
[
'name' => '\Zend\Validator\File\IsImage',
],
[
'name' => '\Zend\Validator\File\UploadFile',
],
[
'name' => '\Zend\Validator\File\ImageSize',
'options' => [
'minWidth' => 300,
'minHeight' => 300,
]
],
[
'name' => '\Zend\Validator\File\Size',
'options' => [
'max' => '20MB',
]
],
]
]);
As you see the image upload field is not required and may be empty. But in my form I get these errors:
array (size=1)
'profileimage' =>
array (size=4)
'fileIsImageNotReadable' => string 'File is not readable or does not exist' (length=38)
'fileUploadFileErrorNoFile' => string 'File was not uploaded' (length=21)
'fileImageSizeNotReadable' => string 'File is not readable or does not exist' (length=38)
'fileSizeNotFound' => string 'File is not readable or does not exist' (length=38)
How can I handle this issue? I need to this field to be optional.

Answer 1

change your filter
$inputFilter->add([
'name' => 'profileimage',
'type' => '\Zend\InputFilter\FileInput',
'required' => false,
'allow_empty' => true,
'priority' => 300,
'filters' => [
['name' => 'StripTags'],
['name' => 'StringTrim'],
],
'validators' => [
[
'name' => '\Zend\Validator\File\IsImage',
],
[
'name' => '\Zend\Validator\File\UploadFile',
],
[
'name' => '\Zend\Validator\File\ImageSize',
'options' => [
'minWidth' => 300,
'minHeight' => 300,
]
],
[
'name' => '\Zend\Validator\File\Size',
'options' => [
'max' => '20MB',
]
],
]
]);
read about it here: http://framework.zend.com/manual/current/en/modules/zend.input-filter.file-input.html