substance display and preferred name interplay

[cmgrulke]

As a curator I want to not put in display names if it should be the same as the preferred name So that I don't have to manage redundant information

POST https://api.chemreg.epa.gov/substances PATCH https://api.chemreg.epa.gov/substances/{id} GET https://api.chemreg.epa.gov/substances GET https://api.chemreg.epa.gov/substances/{id}

Acceptance Criteria:

• display_name is not required (is nullable)
• If the display name is stored as null, the api on get should return the preferred_name as the display_name on GET requests.

[debboutr]

Audio from ticketting...

[michael-barbour]

Example of newly functioning POST with null display_name.

225-substance-display-name.postman_collection.zip