Question

I wanted to ask what’s the difference between the value in the adressline and the id I get when i use getId().
For example for one document the getId() value is:

t8K_TLQPmKzgB72pY4TblUg

while in the adressline the key is:

0Amu7sNvd2IoudDhLX1RMUVBtS3pnQjcycFk0VGJsVWc

what i figured out so far is that when you encode getId in base64 you get more or less the last part of the key in the adressline

 (base64Encode(t8K_TLQPmKzgB72pY4TblUg) = dDhLX1RMUVBtS3pnQjcycFk0VGJsVWc=).

But I still don’t know what 0Amu7sNvd2Iou stands for, because i have the impression that this parts also is different in older documents, therefore i can’t just combine the key using all the time 0Amu7sNvd2Iou at the beginning

Why I need to know this: my scripts use the getId method but some users fill in their ids manually (they just copypaste it from the key from the adressline). The result is that when i try to compare them although they refer to the same document i can’t match them like they are completly different…

thanks a lot for bringing light into this problem

edit @taras:
i can also open the document with the key and the id. It’s just weird that there are kind of two different id’s for one document. If for example i want to compare if a value somebody copypasted from the adressline to a document is the same as the file i have opened i won’t get a true, even it is the same file

var keyFromHeadline = "0Amu7sNvd2IoudDhLX1RMUVBtS3pnQjcycFk0VGJsVWc"
var id = SpreadsheetApp.getActiveSpreadsheet.getId();
if (keyFromHeadline==id) Browser.msgBox("blabla")

Therefore i would be interested what is the reason for the two different values and how i could match them

Answer 1

If you need to have unique file IDs just normalize them. Everytime a user enters an ID manually just run it trough the fileIdNormalize function:

function fileIdNormalize(id) {
  if (typeof id == 'string' && id.length > 0)
    return DocsList.getFileById(id).getId();
  return '';
}