How to make such a multiload in yii2?

Question

Yii

Hello.
I have a post update form that generates inputs like this

<input name="Model[imageFiles][25]" type="file">
<input name="Model[imageFiles][36]" type="file">
<input name="Model[imageFiles][89]" type="file">

There can be as many inputs as you like, each has its own id (id of the file in the database)
Question: how can I get these id on the server in order to save the files correctly?

UploadedFile::getInstances($model, 'imageFiles')

returns

array(2) {
  [0]=>
  object(yii\web\UploadedFile)#223 (5) {
    ["name"]=>
    string(6) "bg.jpg"
    ["tempName"]=>
    string(39) "\phpC709.tmp"
    ["type"]=>
    string(10) "image/jpeg"
    ["size"]=>
    int(285557)
    ["error"]=>
    int(0)
  }
  [1]=>
  object(yii\web\UploadedFile)#224 (5) {
    ["name"]=>
    string(8) "matr.jpg"
    ["tempName"]=>
    string(39) "\phpC71A.tmp"
    ["type"]=>
    string(10) "image/jpeg"
    ["size"]=>
    int(10130)
    ["error"]=>
    int(0)
  }
}

i was expecting to get id as array keys.
Or maybe there is another way to pass the file ID when uploading it?

Answer 1

1. Remove from the input(type="file") id images.
2. Add inputs(type="hidden") with id of images in the same sequence as input(type="file")
3. Perform comparison on the server