Add support for trial period about wp-pronamic-pay-gravityforms

[rvdsteege]

I'd also mention the negative amount for trial period pricing in the payment feed settings:

The trial period uses the total amount of the form. You can set the recurring amount separately and add product fields with negative amounts for a discounted trial period.

[rvdsteege]

The PayPal add-on supports a trial period.

[remcotolsma]

Is the screenshot from the following add-on?
https://github.com/pronamic/gravityformsppcp/blob/584df1be0f3c6922133e7884085142efe28d838a/class-gf-ppcp.php#L1516-L1571

Gravity Forms has some basic support for trials?
https://github.com/search?q=repo%3Apronamic%2Fgravityforms+trial&type=code

We could add this, point of attention is a free trial? For direct debit (mandate via iDEAL / Bancontact) recurring payments via Mollie require an initial payment of > € 0,01 to obtain an mandate for the follow-up payments? Should the Mollie gateway override the free trial payment of € 0,00 with € 0,01 in that case? Or should users configure this themselves correctly?

[rvdsteege]

Is the screenshot from the following add-on?

Ah, no (Gravity Forms PayPal Standard add-On). The Paypal Checkout add-on provides some additional pricing options (free, fixed price) next to selecting pricing fields ('Bedrag', 'Ander bedrag'):

[remcotolsma]

I don't like the way Gravity Forms is doing this with the trial_field setting which can be the value 'enter_amount', 'free_trial', but also a specific field ID. I think it's good practice to make a separate setting for this:

Source trial price - trial_price_source

• None → ''
• Free → 'free'
• Field → 'field'
• Amount → 'amount'

Based on these options, additional settings fields can be displayed. For example, a price field drop-down list or an amount input field.

We could add this, point of attention is a free trial? For direct debit (mandate via iDEAL / Bancontact) recurring payments via Mollie require an initial payment of > € 0,01 to obtain an mandate for the follow-up payments? Should the Mollie gateway override the free trial payment of € 0,00 with € 0,01 in that case? Or should users configure this themselves correctly?

What are your thoughts on this @rvdsteege?

[rvdsteege]

Should the Mollie gateway override the free trial payment of € 0,00 with € 0,01 in that case? Or should users configure this themselves correctly?

I would go with users setting this up correctly themselves instead of overriding the amount.

[remcotolsma]

https://github.com/pronamic/wp-pronamic-pay-gravityforms/tree/feature/add-trial-support

[remcotolsma]

Release candidate is ready: https://github.com/pronamic/wp-pronamic-pay/releases/tag/v9.3.0-RC-1.

[remcotolsma]

Based on a user's feedback, we think the trial period settings need further clarification. It will not be clear to every user what amount is used for the trial period. Perhaps users now assume that it is always a free trial? At the moment, we always use the form total for the trial period (for good reasons). Will the following explanation suffice for now?

The amount for the trial period will always be the form total, you can set the amount for the recurring follow-up payments separately.

In a manual we can also give some concrete examples:

• Free trial period
• Reduced price (discount) trial period

The 'trial period' setting can also be used for a 1 + 1 week/month/year free promotions. We should also take into account that certain recurring payment methods require a minimum initial payment of, for example, € 0,01 for obtaining a mandate.

[remcotolsma]

Added in 2731300, and also created in an issue for a manual:

• https://github.com/pronamic/pronamicpay.com/issues/13