def tickets_reserved(flow=None, currency=None):
if current_user.is_anonymous:
return redirect(url_for('users.login', next=url_for('.tickets_reserved', flow=flow)))
basket = Basket(current_user, get_user_currency())
basket.load_purchases_from_db()
basket.save_to_session()
if currency in CURRENCY_SYMBOLS:
set_user_currency(currency)
return redirect(url_for('tickets.pay', flow=flow))
def tickets_reserved(flow=None, currency=None):
if current_user.is_anonymous:
return redirect(
url_for("users.login", next=url_for(".tickets_reserved", flow=flow))
)
basket = Basket(current_user, get_user_currency())
basket.load_purchases_from_db()
basket.save_to_session()
if currency in CURRENCY_SYMBOLS:
set_user_currency(currency)
return redirect(url_for("tickets.pay", flow=flow))
def handle_ticket_selection(form, view: ProductView, flow: str,
basket: Basket):
"""
For consistency and to avoid surprises, we try to ensure a few things here:
- if the user successfully submits a form with no errors, their basket is updated
- if they don't, the basket is left untouched
- the basket is updated to match what was submitted, even if they added tickets in another tab
- if they already have tickets in their basket, only reserve the extra tickets as necessary
- don't unreserve surplus tickets until the payment is created
- if the user hasn't submitted anything, we use their current reserved ticket counts
- if the user has reserved tickets from exhausted tiers on this view, we still show them
- if the user has reserved tickets from other views, don't show and don't mess with them
- this means the user can combine tickets from multiple views into a single basket
- show the sold-out/unavailable states only when the user doesn't have reserved tickets
We currently don't deal with multiple price tiers being available around the same time.
Reserved tickets from a previous tier should be cancelled before activating a new one.
"""
if form.currency_code.data != get_user_currency():
set_user_currency(form.currency_code.data)
# Commit so we don't lose the currency change if an error occurs
db.session.commit()
# Reload the basket because set_user_currency has changed it under us
basket = Basket.from_session(current_user, get_user_currency())
form.add_to_basket(basket)
if not any(basket.values()):
empty_baskets.inc()
if view.type == "tickets":
flash("Please select at least one ticket to buy.")
elif view.type == "hire":
flash("Please select at least one item to hire.")
else:
flash("Please select at least one item to buy.")
basket.save_to_session()
return redirect(url_for("tickets.main", flow=flow))
# Ensure this purchase is valid for this voucher.
voucher = Voucher.get_by_code(basket.voucher)
if voucher and not voucher.check_capacity(basket):
basket.save_to_session()
if voucher.is_used:
flash("Your voucher has been used by someone else.")
else:
flash(f"You can only purchase {voucher.tickets_remaining} adult "
"tickets with this voucher. Please select fewer tickets.")
return redirect(url_for("tickets.main", flow=flow))
app.logger.info("Saving basket %s", basket)
try:
# Convert the user's basket into a purchase.
basket.create_purchases()
basket.ensure_purchase_capacity()
db.session.commit()
except CapacityException as e:
# Damn, capacity's gone since we created the purchases
# Redirect back to show what's currently in the basket
db.session.rollback()
no_capacity.inc()
app.logger.warn("Limit exceeded creating tickets: %s", e)
flash(
"We're very sorry, but there is not enough capacity available to "
"allocate these tickets. You may be able to try again with a smaller amount."
)
return redirect(url_for("tickets.main", flow=flow))
basket.save_to_session()
if basket.total != 0:
# Send the user off to pay
return redirect(url_for("tickets.pay", flow=flow))
else:
return handle_free_tickets(flow, view, basket)