Create a documentSet using graph API - configuration - microsoft-graph-api

Question

I implemented with Graph API several calls to create a document set.
I followed the answer posted here concerning the possibility of creating a DocumentSet in SharePoint here : Is it possible to create a project documentset using graph API?
For this i followed those steps :
1. Getting the library driveId :
`GET https://graph.microsoft.com/v1.0/sites/${siteId}/lists/${listId}?$expand=drive`
2. Creating the folder:
POST https://graph.microsoft.com/v1.0/drives/${driveId}/root/children
I have to pass an object:
{
"name": ${nameOfTheFolder},
"folder": {},
}
3. Getting the Sharepoint itemId:
4. Updating the document library:
`PATCH https://graph.microsoft.com/v1.0/sites/${siteId}/lists/${listId}/items/${sharepointIds.listItemId}`
and passing a body:
{
"contentType": {
"id": "content-type-id-of-the-document-set"
},
"fields": {
//whatever fields you want to set
}
}
I have questions concerning the folder creation and the updating:
What is expected in the folder object ?
{
"name": ${nameOfTheFolder},
"folder": {},
}
Concerning the path step:
{
"contentType": {
"id": "content-type-id-of-the-document-set"
},
"fields": {
//whatever fields you want to set
}
}
I have several questions :
Let's consider i have a document type called invoices. Which id is expected for document type id ?
finally how do i pass the fields ? let's say i want to pass 3 fields : invoiceId, claimId, clientId.
Graph API is great but some more information would be helpful. thanks !

Answer 1

I have questions concerning the folder creation and the updating: What is expected in the folder object ?
The folder object (sent as {}) is there to tell graph API that you are creating a folder and not a file. It is a property of the drive item
Let's consider i have a document type called invoices. Which id is expected for document type id ?
This is the id contentType subfield of the list item you are patching
ally how do i pass the fields ? let's say i want to pass 3 fields : invoiceId, claimId, clientId.
You just pass them with repective values like below. See Update listItem
{
"invoiceId": "value",
"claimId": "value"
...
}

Answer 2

One point I didn't express correctly was to know what id is expected here :
{
"contentType": {
"id": "content-type-id-of-the-document-set"
},
"fields": {
//whatever fields you want to set
}
}
I retrieved the different content types of my site by calling this kind of URL and check if the content type exists.
https://graph.microsoft.com/v1.0/sites/${siteId}/lists/${listId}/contentTypes
From the result i retrieve in a Value object the id.
The id looks like this :
0x0120D5200082903AB771604546844DB2AC483D905B00E58445A7D..........

Answer 3

In modern SharePoint, you can also get the Content Type ID from the UI by browsing to SharePoint Site > Site Settings > Site content types > <ContentTypeName> > Content Type ID.
Content Type ID
Not sure if this is easier than via graph, but it's another option at least.