Validate Uploaded File Extension

[Jamie Jackson]

Has anyone come up with a validator for checking file upload extensions?

I know the nuts and bolts for this, but I don't know how to make it happen in VT.

Nuts & Bolts:

• Get the file name in JS: document.getElementById("attach_99").value
• Get the file name in Lucee: 
  function getUploadFileName(required string formFieldName) {
  return getPageContext().formScope().getUploadResource(formFieldName).getName();
  }

I tried to see if I could manage to get the client-side part working with existing constructs, but it's not working:

...

<uform:fieldset legend="blah">

  <uform:field label="Attach File TEXT" name="attach_99" isRequired="false" type="file" />

</uform>

...

...

{"name":"attach_99","desc":"changeme",

"rules": [

{"type":"regex", "params" : [

{"name":"regex","value":".*\.pdf"}

]}

]

}

...

As a text input, this works fine.

For now, I'm doing server-side validation (separate from any explicit VT rules) and performing an addFailure() to add the issue into the validation object, but I'm not sure how to tackle the client-side.

Thanks,

Jamie