ActiveStorage File Attachment Validation : <p>Is there a way to validate attachments with ActiveStorage? For example, if I want to validate the content type or the file size?</p>

<p>Something like Paperclip's approach would be great!</p>

<pre><code>  validates_attachment_content_type :logo, content_type: /\Aimage\/.*\Z/
  validates_attachment_size :logo, less_than: 1.megabytes
</code></pre>
