The overview of what I'm trying to do is the same as listed in those linked issues and comments: I would like to provide a control where people can pull down files from their OneDrive accounts (both personal and business) and then upload them to my application. As a working example of this, I essentially want to do exactly what ChatGPT recently added with their "Connect to Microsoft OneDrive" file upload feature.
I understand how to set up multitenant in the Azure portal in the AAD registration ("Supported account types" is "Accounts in any organizational directory (Any Microsoft Entra ID tenant - Multitenant) and personal Microsoft accounts (e.g. Skype, Xbox)"). The problem is that the FilePicker requires a baseUrlbefore I know what the user's tenant is going to be - this feels like a catch 22 to me. Here is the relevant section from the doc in the Initiate the Picker section:
To initate the picker you need to create a "window" which can either be an iframe or a popup. Once you have a window you should construct a form and POST the form to the URL {baseUrl}/_layouts/15/FilePicker.aspx with the query string parameters defined.
What I don't understand at all is what I should set that baseUrl value to if I wish to allow any user to authenticate with their OneDrive/Sharepoint account. I think it would really, really help cut down on confusion if the doc just outlined the following cases:
baseUrl assuming it's a single tenant app, i.e. users must belong to the same tenant as where the application was registered.
baseUrl in the multi tenant app case.
baseUrl for personal OneDrive accounts (I haven't tested this yet but the doc already appears to state this as https://onedrive.live.com/picker).
Category
There are a couple of issues around multitenant support for the FilePicker control (#1636 and #1684) that are unfortunately closed, but with no actual good solutions. This seems to be a common problem because there are similar unanswered questions online at https://learn.microsoft.com/en-us/answers/questions/1165692/multi-tenant-setup-for-sharepoint-v8-for-filepicke and https://techcommunity.microsoft.com/t5/onedrive-developer/base-url-used-for-multi-tenants/m-p/3792211.
The overview of what I'm trying to do is the same as listed in those linked issues and comments: I would like to provide a control where people can pull down files from their OneDrive accounts (both personal and business) and then upload them to my application. As a working example of this, I essentially want to do exactly what ChatGPT recently added with their "Connect to Microsoft OneDrive" file upload feature.
I understand how to set up multitenant in the Azure portal in the AAD registration ("Supported account types" is "Accounts in any organizational directory (Any Microsoft Entra ID tenant - Multitenant) and personal Microsoft accounts (e.g. Skype, Xbox)"). The problem is that the FilePicker requires a
baseUrlbefore I know what the user's tenant is going to be - this feels like a catch 22 to me. Here is the relevant section from the doc in the Initiate the Picker section:What I don't understand at all is what I should set that
baseUrlvalue to if I wish to allow any user to authenticate with their OneDrive/Sharepoint account. I think it would really, really help cut down on confusion if the doc just outlined the following cases:Thanks for your assistance.