Support for Prices and attaching Price items to subscriptions

[NomanGul]

I set up the localstripe package in my python backend but It's throwing Bad Request error here:

                trial_end = (date.today() + relativedelta(months=+1)).strftime('%s')
                subscription_items = [{
                    "price": "price_xxxxxxxxxxxxxxx"
                }]
                subscription = stripe.Subscription.create(
                    customer=customer.id,
                    trial_end=trial_end,
                    items=subscription_items,
                )

I searched into the GitHub issues but found nothing related. after that, I dig into the source code of localstripe and found out localstripe did not support price items yet and localstripe only supports plan items.

localstripe/localstripe/resources.py

Lines 2353 to 2369 in 591f3b5

	for item in items:
	assert type(item.get('plan', None)) is str
	if item.get('quantity', None) is not None:
	item['quantity'] = try_convert_to_int(item['quantity'])
	assert type(item['quantity']) is int
	assert item['quantity'] > 0
	else:
	item['quantity'] = 1
	item['tax_rates'] = item.get('tax_rates', None)
	if item['tax_rates'] is not None:
	assert type(item['tax_rates']) is list
	assert all(type(tr) is str for tr in item['tax_rates'])
	assert type(enable_incomplete_payments) is bool
	assert payment_behavior in ('allow_incomplete',
	'error_if_incomplete')
	except AssertionError:
	raise UserError(400, 'Bad request')

[adrienverge]

Hello Noman,

You're correct, price is not yet supported when creating a subscription in localstripe.
Contributions are welcome, however you must be warned that all the code around Subscription and Invoice objects is very complicated, so I'm not sure how easy it would be to add support for price, without breaking something else.

[ajpetersons]

Hi

We are also using localstripe, and would really appreciate support for Price. As we have implemented Stripe recently and Prices replace Plans, we did not really consider using Plans

[astex]

Hey all. I've just started working on a stripe integration myself and would like to use localstripe for local development. This requires support for the prices API. So, I've put up PR #246. Not totally sure how to get this reviewed and merged.