Best way to get group id from site id

Question

I am able to get the group id using graph filtering logic for mailNickname. Is this the best approach? Another workaround I found out was using proxyAddresses. Later, found out proxyAddresses doesn't always contains the SPO:SPOsiteId@SPOtenant

Answer 1

Hi @Sanskaar Patni

Per my research, proxyAddresses is not recommended to retrieve group id. Some proxyAddresses of groups are not set, so we are unable to get the properties. You can refer to the following document

User doesn't have the mailNickName or proxyAddresses attribute set

Currently the best way to get group id is to filter by mailNickname or displayName. Please refer to the following api

https://graph.microsoft.com/v1.0/groups?$filter=startswith(displayName,'Test')

https://graph.microsoft.com/v1.0/groups?$filter=mailNickname eq 'Test'&$select=id

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Answer 2

Hi @Sanskaar Patni,

Thanks for reaching out.

To get the group details based on site id or name, please refer the below 2 approaches.

I would recommend the solution 1 since for some of the groups proxyAddresses will not set.

Solution1:

Run the below graph api to get the SharePoint site associated group details:

• https://graph.microsoft.com/v1.0/groups?$filter=mail eq '{Site_Name}@{Tenant_Name}.onmicrosoft.com' 
• Ex:  https://graph.microsoft.com/v1.0/groups?$filter=mail eq'******@xxxx.onmicrosoft.com'
• Please note that we have to use the Site Name property here (don't use site's display name), which is site's internal name and will not change even site name has been changed.

Solution2:

Run the below graph Api to get the site details based on the site URL.

• https://graph.microsoft.com/v1.0/sites/{host_name}:/sites/{siteurlname}
• EX: https://graph.microsoft.com/v1.0/sites/xxxx.sharepoint.com:/sites/test
• ID property from above graph call response is a unique ID that is a composite of the following values. Get the site collection unique ID.
• "id": "host_name,site_collection_unique_ID,site_unique_ID"
• Run the below graph api to get the group details based on the information collected from above.
• https://graph.microsoft.com/v1.0/groups?$filter=proxyAddresses/any(x:startswith(x, 'SPO:SPO_{Site_collection_unique_ID}@SPO_{Tenant_ID}'))

Hope this helps.

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Answer 3

You can get it from the SP site's drive

https://graph.microsoft.com/v1.0/sites/siteID/drive?$select=owner

And it's under the group object.