Google Apps: Get list of parent/child/sibling files and folders from a Google Drive Folder

A Google Apps Script for Google Sheets to list folders and files from a Google Drive folder

What this is for:

I had a project where I needed to migrate a shared folder to a shared drive instead. I opted to make a GSheet to do all the file listings and then had the sheet generate all items in folder rather than manual entry.

(I'll try to make this into a template for quick use but for now here is a simple how to)

How to use

1. Open a new Google Sheet
2. Go to Extensions > App Scripts, this will open a new tab with an empty "Untitled Project". Feel free to click that area and name your project.
3. Remove the small code they place in the project by default and copy the contents of code.js from this repo and paste into the new project. Hit save.
4. Go back to your GSheet and reload the page
5. You should now see a List Files/Folders menu item pop-in (takes a few seconds)
6. Click the List File/Folders > List All Parent/Child Files and Folders menu item
7. Google is going to prompt you for authorization at this part, go ahead and click Authorize
8. You'll then choose your Google Account from the list
9. You'll get a warning like so, in transparency this is my first go with app scripts so not sure how to verify, if you know please feel free to submit a pull request on this and we can update these directions. Click Advanced > Go to [Your Projects Name] (unsafe). Note, you will probably see your email in the blurred part of the image below.

10. You'll now see a prompt for allowing the script to access your Google Drive, Allow it
11. Now repeat step 6 (Click the List File/Folders > List All Parent/Child Files and Folders menu item)
12. Go to another tab and navigate to a folder in your GDrive and click into that folder, in the navbar you will see the ID for you folder: ex: https://drive.google.com/drive/u/1/folders/[folderIDHere]
13. Copy the folder Id and then paste into the prompt's input from you Google Sheet
14. Give the script a minute or two to run and you should see your things appear, you should see something like so:

Fields List

• Full Path: the full path to the files location
• Name: Name of the file
• Type: Type of file - [https://developers.google.com/drive/api/guides/mime-types](see full list here)
• Date: Date created
• Last updated: Date the file was last updated
• Description: Pulled from the file description you can assign in Google Drive
• Owner Email: Email of the person who owns the file
• Owner Name: Nae of the person who owns the file
• Owner Avatar: Picture of the person who owns the file

Thats about it! Now if you are like me, you have the option of also running the Set Folders Formatting to Bold menu item from the List Files/Folders menu and you should see any line item that is a folder become bold and have a light grey (#f3f3f3) background.

Other things in this file:

• Duplicate Active Tabs - Choose an active tab, choose this menu item, enter a number and viola, duplicates of the tab to whatever number you set
• Formula =sheetnames() creates a list of all the tabs on the workbook.