How To Use / Reference Field Values Generated In The Same Json Schema

I am trying to create mock data by using the json-server in combination with the json-schema-faker. I was trying to use the $ref property but I understood that this only references

Solution 1:

I'd like to share here a solution that I found. In my case, I required to generate the same value for the fields password and password_confirmation using json-schema-faker, and something that worked for me was, assign a new property in the faker library and put the new property name inside the faker schema. Here the code:

import faker from 'faker';
import jsf from 'json-schema-faker';

// here we generate a random password using faker
const password = faker.internet.password();
// we assign the password generated to a non-existent property, basically here you create your own property inside faker to save the constant value that you want to use.
faker.internet.samePassword = () => password;
// now we specify that we want to use faker in jsf
jsf.extend('faker', () => faker);
// we create the schema specifying the property that we have created above
const fakerSchema = {
   type: 'object',
   properties: {
      password: {
         faker: 'internet.samePassword',
         type: 'string'
      },
      password_confirmation: {
         faker: 'internet.samePassword',
         type: 'string'
      }
   }
};
// We use the schema defined and voilá!
let dataToSave = await jsf.resolve(fakerSchema);


/*
This is the data generated
{
   password: 'zajkBxZcV0CwrFs',
   password_confirmation: 'zajkBxZcV0CwrFs'
}
*/