modify output from REST API - integration

[sammarcow]

i need a simple integration to return fields with certain parameters on utilizing of Post.   I basically need to rename some of the fields on the response body.     Does ServiceNow have the ability to retrieve the results of a Post, utilize server side code and generate a new return body, or will I need to create a web service in order to handle the out-of-box return messages?   I am doing a custom integration for Slack if that matters.    

[sammarcow]

@NeriusNow can the processor read Post properties or only query string?

[drjohnchun]

I've written a blog series on custom building a REST API (only using GET), partly to be able to rename fields. Part 6 is on building a processor. And, yes, processors can do POST:

GQL (Glide Query Language) Part 6: The Processor

Part 4 describes the Script Include that fetches the data; if you want to keep it simple, this may be included in your processor:

GQL (Glide Query Language) Part 4: The Retriever

Good luck!

Please feel free to connect, follow, mark helpful / answer, like, endorse.

John Chun, PhD PMP

Winner of November 2016 Members' Choice Award

[drjohnchun]

Also, if you're using JSON, you might want to make a note of the below:

g_processor.writeOutput("application/json", new global.JSON().encode(result));   // works in global & scoped
g_processor.writeJSON(result);   // works in scoped only