如何在Sharepoint REST Api中过滤非标准列

Question

Is it possible to determine which columns in a SP List or document library were custom generated by the user? I'm essentially trying to recreate SharePoint's front end in my app, and I want to add columns to my table just like if the user adds a column in SP. My issue is determining which columns are non-standard.

I already know how to get properties for list items/files and I can see my user generated columns in the response. I'm just looking for is there a way to filter for only non-standard columns?

User Generated Column in SP

Column in Results (as well as all other default fields)

Answer 1

We can use the REST API below to get the custom fields from a custom list.

http://sp2013/_api/web/lists/getbytitle('CustomList')/fields?$select=Title&$filter=FromBaseType eq false

For document library use this.

http://sp2013/sites/team/_api/web/lists/getbytitle('Documents')/fields?$select=Title&$filter=FromBaseType eq false and Hidden eq false and CanBeDeleted eq true and substringof('SourceID="{',SchemaXml)

Answer 2

I find the most reliable way to determine whether field is built-in or it a custom one is to utilize SPField.SourceId Property :

Gets either the namespace that defines a built-in field or, if it a custom field, the GUID that identifies the list or Web site where it was created.

In case of SharePoint REST API, SourceId property is not exposed but could be extracted from SchemaXml property

The following example demonstrates how to retrieve all the custom fields from a list:

https://site.sharepoint.com/_api/web/lists/getbytitle('<list title>')/fields?$select=InternalName&$filter=substringof('http://schemas.microsoft.com/sharepoint/v3',SchemaXml) eq false

Once the list of field is retrieved, the values of list items could be retrieved by specifying field names in $select expression:

https://site.sharepoint.com/_api/web/lists/getbytitle('<list title>')/items?$select=<fieldname1>,<fieldname2>

Update

The encountered error

Cannot find resource for the request fields

tells that requested resource(library in this case) could not be found, make sure to provide library title for getbytitle method:

https://site.sharepoint.com/_api/web/lists/getbytitle('<list title>')

                                                      ^^^^^^^^^^^^^^