Create Secondary Dependent Lookup Field with Graph API: A Step-by-Step Guide

In this article, we will explore how to create a secondary dependent lookup field using Microsoft Graph API. This feature is particularly useful in SharePoint and Microsoft 365 environments, where you need to fetch data from another list or table based on a parent field.

Prerequisites

• Basic understanding of Microsoft Graph API and SharePoint
• Access to Microsoft Graph API and SharePoint with necessary permissions
• Familiarity with JSON data structures and RESTful APIs

Understanding Secondary Dependent Lookup Fields

A secondary dependent lookup field is a type of field that retrieves data from another list or table based on a parent field. For example, if you have a list of customers and a separate list of orders, you can create a secondary dependent lookup field to fetch the order details based on the customer ID.

Benefits of Secondary Dependent Lookup Fields

• Improved data consistency and accuracy
• Enhanced user experience with automatic data population
• Reduced data redundancy and improved data management

Creating a Secondary Dependent Lookup Field with Graph API

To create a secondary dependent lookup field with Graph API, follow these steps:

1. Identify the parent field and the dependent field. In our example, the customer ID is the parent field, and the order details are the dependent field.

2. Use the Microsoft Graph API to fetch the data from the dependent list or table. You can use the GET / lists/{listId}/items endpoint to fetch the data.

3. Use the parent field value to filter the dependent data. For example, you can use the $filter query parameter to filter the data based on the customer ID.

4. Create a new field in your SharePoint list or table to store the dependent data. You can use the POST / lists/{listId}/fields endpoint to create a new field.

5. Configure the field to use the Graph API to fetch the dependent data. You can use the GET / lists/{listId}/fields/{fieldId} endpoint to update the field configuration.

Example Graph API Request

Here is an example Graph API request to create a secondary dependent lookup field:

POST https://graph.microsoft.com/v1.0/sites/{siteId}/lists/{listId}/fields
{
    "displayName": "Order Details",
    "type": "lookup",
    "lookupListId": "{dependentListId}",
    "lookupFieldInternalName": "OrderID",
    "parentFieldInternalName": "CustomerID"
}

Conclusion

In this article, we have demonstrated how to create a secondary dependent lookup field using Microsoft Graph API. This feature can greatly improve data consistency and user experience in SharePoint and Microsoft 365 environments. By following the steps outlined in this article, you can create secondary dependent lookup fields to fetch data from another list or table based on a parent field.

Remember to replace the placeholders with your actual list and field IDs, and adjust the API requests according to your specific requirements.

Frequently Asked Questions

If you’re stuck on how to create a secondary dependent lookup field using Graph API, don’t worry, we’ve got you covered! Below are some frequently asked questions and answers to get you started.