callyb

pset7 buy

Mar 18th, 2017
157
Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
  1. @app.route("/buy", methods=["GET", "POST"])
  2. @login_required
  3. def buy():
  4. """Buy shares of stock."""
  5. if request.method == "GET":
  6. return render_template("buy.html")
  7.  
  8. # if user reached route via POST
  9. if request.method == "POST":
  10. # ensure symbol was submitted
  11. if not request.form.get("symbol") and request.form.get("number_stocks"):
  12. return apology("symbol required")
  13.  
  14. else:
  15. #lookup the stock using the symbol and define vars
  16. details = lookup(request.form.get("symbol"))
  17. symbol = request.form.get("symbol")
  18. price = details["price"]
  19. quantity = int(request.form.get("number_stocks"))
  20. total = price * quantity
  21. user = session["user_id"]
  22.  
  23.  
  24. #ensure the stock is valid
  25. if price == None:
  26. return apology("this stock is not valid")
  27.  
  28. else:
  29. #get cost of stocks and deduct from balance in users account
  30. sum_req = round(price * quantity,2)
  31. balance = db.execute("SELECT cash FROM users WHERE id = :id", id = session["user_id"])
  32. balance = round(balance[0]['cash'])
  33. remaining = balance - sum_req
  34.  
  35. if balance < sum_req:
  36. return apology("You do not have sufficient funds for this transaction, please try again")
  37.  
  38. else:
  39. #insert transaction into 'transactions' table
  40. db.execute ("UPDATE users SET cash = :cash WHERE id = :id", cash = remaining, id = session["user_id"])
  41. db.execute ("INSERT INTO 'transactions' (users_id, symbol, number, price, date, total_cost) VALUES (user, symbol, quantity, price, datetime('now'), total)")
  42.  
  43. #check if stock is already in the 'portfolio' table
  44. existing_symbol = db.execute ("SELECT symbol = :symbol, number = :number FROM 'users' WHERE users_id = :id", symbol = symbol, number = number, id = user)
  45. #if so add new stock to existing quantity
  46. if existing_symbol:
  47. db.execute ("UPDATE 'portfolio' SET number = number + :quantity, current_value = :new_value where id = :id", quantity=quantity, new_value = (number +quantity)*price, id=user)
  48.  
  49. #if not insert new record
  50. else:
  51. db.execute ("INSERT INTO 'portfolio' (users_id, symbol, number, current_value) VALUES (users_id, symbol, number, current_values)")
  52. #placeholder for now
  53. return render_template("success.html")
RAW Paste Data

Adblocker detected! Please consider disabling it...

We've detected AdBlock Plus or some other adblocking software preventing Pastebin.com from fully loading.

We don't have any obnoxious sound, or popup ads, we actively block these annoying types of ads!

Please add Pastebin.com to your ad blocker whitelist or disable your adblocking software.

×