NullPointerException providing no content fields for a structure with no required fields through APIs

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.4.3.6 CE GA6, 7.4.13 DXP U2, 7.4.3.7 CE GA7, 7.4.13 DXP U3, Master
• Component/s: Headless Delivery API
• Labels:
  • fi-s-headless
  • liferay-update-dxp-3-7413
• Fix Priority: 2
• Sprint: S04E30 - Sea Change
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/111570

When you don't provide content fields in a structured content of a content structure with no required fields, a NullPointerException is thrown when the field has no default value.

Steps to reproduce:

1. Create a Web Content Structure with one non-required field and no default value (or use Basic Web Content)
2. Create a Structured Content through APIs sending a request with only title and contentStructureId

curl -H "Content-Type: application/json" -X POST "http://localhost:8080/o/headless-delivery/v1.0/sites/{siteId}/structured-contents" -d "{\"contentStructureId\": {contentStructureId}, \"title\": \"Test Article\"}" -u "[email protected]:test"

Remember to replace the {siteId} in the path and the {contentStructureId} in the body with valid ids in your portal instance

Result: A 500 Internal Server Error status code is returned and a NullPointerException is logged in the server

Expected Result: The Structured Content is created successfully and a 200 status code is returned