Allow upgrade/downgrade of membership level #57674

New Issue

Sybren A. Stüvel · 2018-11-07T11:18:32+01:00

Sybren A. Stüvel commented

2018-11-07 11:18:32 +01:00

Users should be able to upgrade & downgrade their membership level whenever they want.

Requirements:

The minimum amount of time you can buy is still one month. This means that if you haven't paid enough yet to allow for a month of the new membership level, you have to pay extra.
Switching between membership levels should be lossless w.r.t. costs.

Approach:

Assume that a membership level represents a fixed amount of money per time (MPT).
Use the MPT of the current membership level to convert the time between now and the subscription's next payment date into money.
Use the MPT of the desired membership level to convert that money back to a new time period.
If that time is less than a month, the user has to pay the difference.
If that time is a month or more, the next payment date is extended accordingly.

Changing the membership level implies:

Change existing membership.level to point to the new level
Change subscription.plan to point to the payment plan that belongs to that membership level.
Change subscription.price so that it matches the payment plan.
Send a confirmation email to the user.

Users should be able to upgrade & downgrade their membership level whenever they want. Requirements: - The minimum amount of time you can buy is still one month. This means that if you haven't paid enough yet to allow for a month of the new membership level, you have to pay extra. - Switching between membership levels should be lossless w.r.t. costs. Approach: - Assume that a membership level represents a fixed amount of money per time (MPT). - Use the MPT of the current membership level to convert the time between now and the subscription's next payment date into money. - Use the MPT of the desired membership level to convert that money back to a new time period. - If that time is less than a month, the user has to pay the difference. - If that time is a month or more, the next payment date is extended accordingly. Changing the membership level implies: - Change existing `membership.level` to point to the new level - Change `subscription.plan` to point to the payment plan that belongs to that membership level. - Change `subscription.price` so that it matches the payment plan. - Send a confirmation email to the user.

Sybren A. Stüvel commented

2018-11-07 11:18:32 +01:00

Added subscriber: @dr.sybren

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