How to modify image name before uploading in zend framework 3

Question

I am trying to upload image using zend form class and my current input filter is this

$inputFilter->add([
        "name"                                           => "ImageLogo",
        "required"                                       => false,
        "validators"                                     => [
            [
                "name"                                   => "FileMimeType",
                "options"                                => [
                    "mimeType"                           => [ "image/jpeg", "image/png" ],
                ],
            ],
            [
                "name"                                   => "FileIsImage",
            ],
        ],
        "filters"                                        => [
            [
                "name"                                   => "FileRenameUpload",
                "options"                                => [
                    "target"                             => getcwd() . "/public/uploads/logos",
                    "useUploadName"                      => true,
                    "useUploadExtension"                 => true,
                    "overwrite"                          => true,
                    "randomize"                          => true,
                ],
            ],
        ],
    ]);

It uploads perfectly, but I have some parts that I couldn't able to modify.

First, I would like $entity's Id to be prepended before uploading. Something like, $entity->getId() . $fileName (Confusion: what if I'm adding a new entity. There won't be id)

Second, how would I get file name in controller after validating form. This

if ($form->isValid()) {
 print_r($form->getData());exit();
}

Shows old name.

score 0 · Answer 1 · answered Mar 01 '19 at 18:14

I have a similar application. Here is how I did it if it helps.

I'm not prepending before uploading because as you mentioned the entity id remains uncertain until creation is complete.
I'm uploading first and get the image name on server.

I create the record in db with the tmp_name.

// If form is submitted
if ($this->getRequest()->isPost()) {

    // Merge form data and file data
    $data = array_merge_recursive(
        $this->getRequest()->getPost()->toArray(),
        $this->getRequest()->getFiles()->toArray()
    );

    // Filter and verify form data
    $form->setData($data);

    // If form is valid
    if ($form->isValid()) {
        $data = $form->getData();
        $fileNameOnServer = basename($data['ImageLogo']['tmp_name']);

        // entity repository manages saving into database and return new id
        $newEntityId = $this->_entityRepository->create($data);

        // Here we know the entity ID and the file name on server
    } else {
        // Do something if form is not valid
    }
}

// Do something if form is not submitted (e.g. display form)

Now I have the entity id and the file name. I don't change the file name in DB (the app is happy with the server random name) but from here all the informations are available if you need.

How to modify image name before uploading in zend framework 3

1 Answers1