How to use shared state to aggregate data and use across modify request/ modify response rule

Mock an API request body to use data from the response of another API. This can be done by aggregating the response body in $sharedState.

Note: $sharedState is only available in extension version > 24.8.13 and desktop app > v1.7.1

Steps to aggregate data in modify response rule

1. Create a new modify response rule

2. Select dynamic javascript modification

3. Write javascript code to aggregate the data from response body in $sharedState

   Copyfunction modifyResponse(args) {
     const {method, url, response, responseType, requestHeaders, requestData, responseJSON} = args;
     // Change response below depending upon request attributes received in args
     const productList=responseJSON.products;
     const currency=responseJSON.currency;
     // Store data in $sharedState
     $sharedState.productList=productList;
     $sharedState.currency=currency;
   
     return response;
   }
   

Step to use the aggregated data in modify request body

1. Create a new modify request body rule

2. Select dynamic javascript modification

3. Write javascript code to aggregate the data from response body in $sharedState

   Copyfunction modifyRequestBody(args) {
     const { method, url, body, bodyAsJson } = args;
     //Retreive data from $sharedState
     const products = $sharedState.productList;
     const currency = $sharedState.currency;
   
     return {
       ...bodyAsJson,
       products,
       currency
     }
   }