Apex rest API with get and post in the same time [duplicate]

Question

I have a scenario where I need to do a httpPost to save a value from the request parameter and then return some other fields for the same object fields using httpget.

So, my parameter would be something like this:

String opptyId = RestContext.request.params.get('opportunityId');
String nameOfComp = RestContext.request.params.get('newname'); 

Now, I need to update this field nameOfComp from the request param based on opportunityId from the req param.

Once the update is done, I need to get some more data from the same object including the nameOfComp which i have inserted.

Can this be done within one service and single URL mapping?

Answer 1

You can perform all the apex operations in your @http post method and return response. The actions will be synchronously performed in salesforce.

You do not need another service unless you are running some asynchronous action. Note that below code is for demonstration purpose and has sudo code to help you figure it.

@RestResource(urlMapping='/OppService/v1/*')
 global with sharing class OppService {

 @HttpPost
 global static String oppService(){
    RestRequest req = RestContext.request;
    RestResponse res = Restcontext.response;
    String opptyId = RestContext.request.params.get('opportunityId');
    String nameOfComp = RestContext.request.params.get('newname'); 
    // perform your DML
    insert opp;
    // Execute SOQL
     Opportunity opp = [Select Id,Name FROM opportunity where Id=: opp.Id];
     // Additional query and logic
    // Return the response
      return opp;
   }
}