You may explain how to create a price with a trial period over the quick actions (billing)? Cause for me this options not seem to be visible.
I think this really needs attention as if I see this right, it is not possible to define trials at all atm.

Edit:
I was able to find. One need to create a whole new product over the billing page. But yea, issue persists about modifying an existing product and once legacy method gets removed it will not even be possible for new products.

Edit: I was able to find. One need to create a whole new product over the billing page. But yea, issue persists about modifying an existing product and once legacy method gets removed it will not even be possible for new products.

I've created a temporary workaround by editing the source code of the cloud functions created by this extension so that it will create a 30 day trial for customers who have not have a subscription before. This works for my particular circumstance because all of my subscription products will offer a 30 day trial. It won't work for anyone with some products that do not have a trial, or have varying periods - these things could be accommodated with further edits to the functions, picking up metadata or the like.

@maertu these are the changes I've made to function 'ext-firestore-stripe-payments-createCheckoutSession' make this work while waiting for a resolution from Invertase. Hopefully it can help you:

    if (mode === 'subscription') {

      //Prevent customer from having free trial twice
      const previousSubs = await admin
        .firestore()
        .collection(config.customersCollectionPath + '/' + context.params.uid + '/subscriptions')
        .get();

      const subDocs = previousSubs.docs.map(doc => doc.data());
      const hadProducts = subDocs.map(doc => doc.items.map(i => i.plan.id)[0]);
      const subTo = sessionCreateParams.line_items.map(m => m.price);
      const foundPrice = subTo.some(r => hadProducts.includes(r));

      sessionCreateParams.payment_method_collection =
        payment_method_collection;

      if (foundPrice == false) {
        sessionCreateParams.subscription_data = {
          trial_period_days: 30,
          metadata,
        };
      } else {
        sessionCreateParams.subscription_data = {
          metadata,
        };
      }

      if (!automatic_tax) {
        sessionCreateParams.subscription_data.default_tax_rates = tax_rates;
      }
    }

Edit: I was able to find. One need to create a whole new product over the billing page. But yea, issue persists about modifying an existing product and once legacy method gets removed it will not even be possible for new products.

I've created a temporary workaround by editing the source code of the cloud functions created by this extension so that it will create a 30 day trial for customers who have not have a subscription before. This works for my particular circumstance because all of my subscription products will offer a 30 day trial. It won't work for anyone with some products that do not have a trial, or have varying periods - these things could be accommodated with further edits to the functions, picking up metadata or the like.

@maertu these are the changes I've made to function 'ext-firestore-stripe-payments-createCheckoutSession' make this work while waiting for a resolution from Invertase. Hopefully it can help you:

    if (mode === 'subscription') {

      //Prevent customer from having free trial twice
      const previousSubs = await admin
        .firestore()
        .collection(config.customersCollectionPath + '/' + context.params.uid + '/subscriptions')
        .get();

      const subDocs = previousSubs.docs.map(doc => doc.data());
      const hadProducts = subDocs.map(doc => doc.items.map(i => i.plan.id)[0]);
      const subTo = sessionCreateParams.line_items.map(m => m.price);
      const foundPrice = subTo.some(r => hadProducts.includes(r));

      sessionCreateParams.payment_method_collection =
        payment_method_collection;

      if (foundPrice == false) {
        sessionCreateParams.subscription_data = {
          trial_period_days: 30,
          metadata,
        };
      } else {
        sessionCreateParams.subscription_data = {
          metadata,
        };
      }

      if (!automatic_tax) {
        sessionCreateParams.subscription_data.default_tax_rates = tax_rates;
      }
    }

Would you mind posting a repo for this? I'm still pretty new to coding and I'm not sure what files i'd need to mod to get this working.

It looks like this has been fixed in next but not yet deployed to npm (

Would it be possible to get an ETA on this landing?