This is the rails api endpoint of a YodleeAPI integration. All calls are restricted with jwt before_filter :authenticate_user_from_token in application controller still have some work to-do to finish up.

yodlee_controller.rb

class YodleeController < ApplicationController

  # return json schema for bank login requirements
  def login_requirements
    # bank info saved in db search by param passed from front-end application
    bank = Bank.find(params[:content_service_id])
    # use bank to make yodlee api call to return json schema
    login_requirements = bank.yodlee.login_requirements
    render json: login_requirements
  end

  #return banks 1-10
  def bank_info
    bank = Bank.limit(10)
    render json: bank
  end

  #use yodlee to login to users bank account and store data
  def send_bank_info
    user = current_user
    # front-end application passes which bank user would like to create account with
    bank = Bank.find(params[:content_service_id])
    #create new account with yodlee to auto gen yodlee username and password
    account = Account.create!(user: user, bank: bank)
    #bank credentials stored to variable to send to yodlee
    bank_credentials = params['bankCredentials']
    #make yodlee account call to get users bank information
    account.yodlee.create(bank_credentials)
  end

  # get users bank data
  def retrieve_bank_data
    user = current_user
    account = user.accounts.first

    #make yodlee call to return data to db
    data = account.yodlee.transaction_data
    #save data in jsonb datatype in postgres
    yodlee_datum = YodleeDatum.create!({
        data: data
    })
    yodlee_datum.reload

    render json: yodlee_datum
  end

  ## todo ##
  # create sql queries to analyse data
  # create new action to render lending decision

end