offers_and_stocks_routes.py

from flask import current_app as app, jsonify, request
from models import Offer, PcObject, Stock

@app.route('/offers/<id>', methods=['GET'])
@login_required
def get_offer(id):
  offer = load_or_404(Offer, id)
  return jsonify(offer._asdict(include=["stocks"]))

@app.route('/stocks', methods=['POST'])
@login_required
def post_stock():
  stock = Stock()
  stock.populateFromDict(request.json)
  PcObject.check_and_save(stock)
  return jsonify(stock._asdict())