def buy():
form = BuyForm()
if form.validate_on_submit():
query_symbol = form.symbol.data
query_quantity = form.shares.data
share = get_quote(query_symbol)
buy_price = float(share['price'])
transaction_value = buy_price * query_quantity
if transaction_value > current_user.cash:
flash('Not enough cash to proceed with the purchase')
return redirect(url_for('main_bp.quote'))
owned_stock = Stock.is_owned(query_symbol, current_user)
if owned_stock:
owned_stock.shares += query_quantity
else:
stock = Stock(symbol=query_symbol,
shares=query_quantity,
buy_price=buy_price,
owner=current_user)
db.session.add(stock)
current_user.cash -= transaction_value
db.session.commit()
transaction = Transaction(user_id=current_user.id,
stock_id=Stock.is_owned(
query_symbol, current_user).id,
buy_price=buy_price,
shares=query_quantity)
db.session.add(transaction)
db.session.commit()
flash(
f"You bought {query_quantity} {query_symbol} shares at £ {buy_price:0.2f} each"
)
return redirect(url_for('main_bp.index'))
flash('Something went wrong, please try again')
return redirect(url_for('main_bp.quote'))
def sell():
form = SellForm()
choices = [(stock.symbol, stock.symbol) for stock in current_user.stocks]
form.symbol.choices = choices
if form.validate_on_submit():
query_symbol = form.symbol.data
query_quantity = form.shares.data
owned_stock = Stock.is_owned(query_symbol, current_user)
if not owned_stock:
flash('You do not own this stock')
return redirect(url_for('main_bp.sell'))
if query_quantity > owned_stock.shares:
flash('You do not have enough shares to sell')
return redirect(url_for('main_bp.sell'))
share = get_quote(query_symbol)
sell_price = float(share['price'])
flash(
f"You sold {query_quantity} {query_symbol} shares at {sell_price:0.2f} each"
)
current_user.cash += query_quantity * sell_price
owned_stock.shares -= query_quantity
transaction = Transaction(user_id=current_user.id,
stock_id=owned_stock.id,
sell_price=sell_price,
shares=query_quantity)
db.session.add(transaction)
db.session.commit()
return redirect(url_for('main_bp.index'))
return render_template('sell.html', form=form)