List all files id inside a folder (no subfolders)

Question

How can I list in a spreadsheet all files id that are located inside a folder ? I have the folder id and the folder contains less than 100 files in total.

function list_all_files_inside_one_folder_without_subfolders(){
var sh = SpreadsheetApp.getActiveSheet();
var folder = DriveApp.getFolderById('0sdfsfd......sfdsdfTg'); // I change the folder ID  here 
// Logger.log('Folder name: ' + folder.getFiles());
sh.getRange(1,1,1,1).setValues('fileID');
}

Thanks

Solution

This is quite simple if you read the documentation about how to write in a spreadsheet and how to get Drive's content.

Here is an example you can customize if you want :

function list_all_files_inside_one_folder_without_subfolders(){
  var sh = SpreadsheetApp.getActiveSheet();
  var folder = DriveApp.getFolderById('0B3qSFd3iikE3TERRSHExa29SU3M'); // I change the folder ID  here 
  var list = [];
  list.push(['Name','ID','Size']);
  var files = folder.getFiles();
  while (files.hasNext()){
    file = files.next();
    var row = []
    row.push(file.getName(),file.getId(),file.getSize())
    list.push(row);
  }
   sh.getRange(1,1,list.length,list[0].length).setValues(list);
}

Comments

[miodf]

Many thanks. ;) I have spent 2 hours trying to find a way to do this. And finally I got lost ! Hence my simple question and your very helpful answer that will help other beginners in the future for sure. Thanks again. ;)

[New_2_Code]

Thanks Serge, your script dropped the execution time from 30 min (maxed out) to 120 seconds. ;D

[Serge insas]

You just need to use another while loop on top of the file's one using DriveApp.getFolders()...

[user2240778]

I added this above - while (files.hasNext()){.... var subfolder = DriveApp.getFolders() while (subfolder.hasNext()){ file = subfolder.next(); var row = [] row.push(file.getName(),file.getId(),file.getSize()) list.push(row); } It give me the sub folder ID's how do I get the file ID's within the sub folders.

[Serge insas]

Put it the the other way, loop through the folders and inside that loop look for the files and get their names and sizes.

[user2240778]

I'm sorry, I'm not sure of this, this is what I have and its only giving me all the folder ID's but not file IDs within the folders. - while (subfolders.hasNext()){ file = subfolders.next(); var row = [] row.push(file.getName(),file.getId(),file.getSize()) list.push(row); while (files.hasNext()){ file = files.next(); var row = [] row.push(file.getName(),file.getId(),file.getSize()) list.push(row); } }

[Serge insas]

I'll write an update in another answer, it will be easier to read

[user2240778]

Let us continue this discussion in chat.

[DanCue]

@Sergeinsas Did you write up the solution with folders on another answer? Can you provide that link?

[Serge insas]

sorry for the late answer... stackoverflow.com/questions/15813879/…

[DanCue]

@Sergeinsas Thank you. The linked solution lists only folders. I need a solution to do both files and folders. I think I will be posting a question for it.