RE: cut out the name of a document

erikae9994 — Wed, 07 Jun 2023 16:16:35 GMT

Really useful... Thank you so much!

RE: cut out the name of a document

Mike Schmitt — Tue, 06 Jun 2023 20:14:31 GMT

I think you need to understand what index() does -- when you give it a number as the second parameter, it attempts to return a corresponding array position from the source data. Since a text string is really just an array of characters, it will return you the letter at that position of the string. Note this isn't really a conventional use of index() (and not every function will treat a string as an array of characters), but that's what it's doing here, and from what I can tell it's totally unrelated to what you're really after.

I believe you might have some success using the "fileNames" parameter of FileUploadField and your expression rule. Personally, I'd opt instead to just use a user-facing validation similar to the following:

a!localVariables(
  local!file: null(),

  a!fileUploadField(
    saveInto: local!file,
    value: local!file,
    maxSelections: 1,
    validations: {
      if(
        len(fv!files.name) > 5,
        "filename too long (5 characters for this example)",
        null()
      )
    }
  )
)

...which will simply provide some feedback like this:

However I assume (but haven't tried per se) that you could instead use the "fileNames" parameter as I mentioned to auto-truncate the filename - note that, as far as I can tell, the change doesn't happen until Form Submission time, so you'll need to experiment with it some.

a!localVariables(
  local!file: null(),

  a!fileUploadField(
    saveInto: local!file,
    value: local!file,
    maxSelections: 1,
    
    fileNames: left(fv!file.name, 5)  /* insert your own length here */
    
    /*validations: {
      if(
        len(fv!files.name) > 5,
        "filename too long (5 characters for this example)",
        null()
      )
    }*/
  )
)

RE: cut out the name of a document

markansink — Tue, 06 Jun 2023 17:28:09 GMT

You can use left(ri!text,100) to get the first 100 characters of the string.

See docs.appian.com/.../fnc_text_left.html for more details