class TransactionsController < ApplicationController def index @transactions = Transaction.all end def new @transaction = Transaction.new end def create @transaction = Transaction.new(transaction_params) respond_to do |format| format.html do if @transaction.save flash[:success] = "Transaction created" redirect_to new_transaction_path else render 'new' end end format.json do head(@transaction.save ? :created : :unprocessable_entity) end end end private def transaction_params t = params.require(:transaction) .permit(:debtor, :creditor, :amount, :message) t.update({ debtor: User.find_by(name: t[:debtor]) || User.zeus, creditor: User.find_by(name: t[:creditor]) || User.zeus, issuer: current_client || current_user }) end end