Feature: #82177 - add file size validator

See Issue #82177

Description

A new ExtbaseValidator called FileSizeValidator has been added which is able to validate a file resource regarding its file size. This validator has 2 options:

  • minimum

The minimum file size to accept. Use the format <size>B|K|M|G. For example: 10M means 10 megabytes.

  • maximum

The maximum file size to accept. Use the format <size>B|K|M|G. For example: 10M means 10 megabytes.

Please keep in mind that the maximum file size also depends on php.ini settings.

Example configuration:

validators:
  -
    identifier: FileSize
    options:
      minimum: 1M
      maximum: 10M

This validator can also be used within the form editor for file and image upload elements.

Impact

A file upload element can be validated regarding its file size. It is possible to add, remove and edit the FileSizeValidator for file upload elements like ImageUpload and FileUpload within the form editor.