How to "count" number of attachments to .PDF and return total to form field?

[nmeffert]

I want to attach files to a PDF document using a "attach files" button (script works fine—all is well on this end).

Once files are attached, I would like a total of files attached to show in a form field on the PDF itself. So if there are two files attached, then the field reads "2". If there is one, then the field reads "1".

Thank you in advance!

[try67]

Are you attaching the files as comments or as data objects?

[jvd369]

Hi, I have the same request 4 years later : )

Attachments are added via

this.importDataObject command.

Thank you in advance again!

[try67]

In that case you can use the dataObjects array to know how many attachments there are:

app.alert("There are " + (this.dataObjects==null ? 0 : this.dataObjects.length) + " attachments in this file.",3);

[jvd369]

Hey, I ended up not using it, but this was a helpful answer nonetheless! Thx!

[Denise36837425x8ec]

Where do you put this to have the number show in a form field?  Validate?  Calculate?  Thanks in advance for your assistance.

[try67]

In a calculation script, but be aware it won't update when a new attachment is added, as that doesn't trigger any field-related events. You can put it in a doc-level script (change event.value = ... to this.getField("").value = ... in that case) to update it when the file is opened, though.