class ThreadsController < ApplicationController # GET /api/threads def index threads = Topic.order(updated_at: :desc) render json: threads end # GET /api/threads/:id def show thread = Topic.find(params[:id]) render json: thread end # POST /api/threads def create thread = Topic.new(thread_params) if thread.save render json: thread, status: :created else render json: { errors: thread.errors.full_messages }, status: :unprocessable_entity end end private def thread_params params.require(:thread).permit(:title, :description) end end