feat: per-event payment methods (extra.payment_methods)

Organizers pick which rails an event accepts — Lightning, card (fiat) or
both — instead of a bare "allow fiat" toggle. `extra.payment_methods`
uses the field name upstream v2 (lnbits/events#64) introduces so the
eventual rebase merges cleanly; an empty list keeps the legacy rule
(Lightning always, fiat when allow_fiat), and allow_fiat stays the
fiat-currency carrier, kept in lockstep on save. The effective list is
published as the NIP-52 tag `tickets_payment_methods` so clients render
exactly the buttons the purchase endpoint will accept, and the buyer page
defaults to the first accepted rail (a card-only event never submits
"lightning").

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EYwoAkZZmXMMmaBp4WGUBo

nostr_publisher.py

@@ -17,7 +17,7 @@ from datetime import datetime, timezone
 from lnbits.core.signers import NostrSigner
 from loguru import logger
 
-from .models import Event
+from .models import Event, effective_payment_methods
 from .nostr.event import NostrEvent
 from .nostr_timestamp import monotonic_created_at
 
@@ -110,6 +110,11 @@ def build_nip52_event(event: Event, pubkey: str) -> NostrEvent:
         tags.append(["tickets_allow_fiat", "true"])
         if event.fiat_currency:
             tags.append(["tickets_fiat_currency", event.fiat_currency])
+    # Rails the organizer accepts, resolved through the same helper the
+    # ticket endpoint enforces with, so a client can render exactly the
+    # buttons that will be accepted (e.g. a card-only event) without a REST
+    # round-trip. Comma-separated, lowercase.
+    tags.append(["tickets_payment_methods", ",".join(effective_payment_methods(event))])
 
     # NIP-52 calendar events are replaceable: this d-tag is republished
     # whenever inventory changes (a ticket sells). Use a strictly-monotonic

static/js/display.js

@@ -35,13 +35,29 @@ window.PageEventsDisplay = {
   async created() {
     this.eventId = this.$route.params.id
     this.event = await this.getEvent()
+    // Default to the first rail the organizer accepts (a card-only event
+    // must not submit "lightning").
+    this.formDialog.data.payment_method = this.paymentMethods[0] || 'lightning'
   },
   computed: {
     formatDescription() {
       return LNbits.utils.convertMarkdown(this.event?.info || '')
     },
+    paymentMethods() {
+      // Mirrors `effective_payment_methods` on the backend: an explicit
+      // extra.payment_methods list wins, else Lightning + fiat-if-allow_fiat.
+      const explicit = this.event?.extra?.payment_methods || []
+      if (explicit.length) return explicit
+      return ['lightning', ...(this.event?.allow_fiat ? ['fiat'] : [])]
+    },
     allowFiatCheckout() {
-      return Boolean(this.event?.allow_fiat)
+      return this.paymentMethods.includes('fiat')
+    },
+    paymentMethodOptions() {
+      return this.paymentMethods.map(method => ({
+        value: method,
+        label: method === 'fiat' ? this.fiatCheckoutLabel : 'Lightning'
+      }))
     },
     fiatCheckoutLabel() {
       if (!this.allowFiatCheckout) return 'Fiat'
@@ -78,7 +94,8 @@ window.PageEventsDisplay = {
       this.formDialog.data.email = ''
       this.formDialog.data.refund = ''
       this.formDialog.data.nostr_identifier = ''
-      this.formDialog.data.payment_method = 'lightning'
+      this.formDialog.data.payment_method =
+        this.paymentMethods[0] || 'lightning'
     },
 
     closeReceiveDialog() {
@@ -112,7 +129,8 @@ window.PageEventsDisplay = {
       this.formDialog.data.email = ''
       this.formDialog.data.refund = ''
       this.formDialog.data.nostr_identifier = ''
-      this.formDialog.data.payment_method = 'lightning'
+      this.formDialog.data.payment_method =
+        this.paymentMethods[0] || 'lightning'
       Quasar.Notify.create({
         type: 'positive',
         message: 'Sent, thank you!',

static/js/display.vue

@@ -90,20 +90,18 @@
               :hint="`If minimum tickets (${event.extra?.min_tickets}) are not met, refund will be sent.`"
             ></q-input>
             <div class="row q-col-gutter-md q-pt-lg items-center">
-              <div v-if="allowFiatCheckout" class="col-auto">
+              <div v-if="paymentMethods.length > 1" class="col-auto">
                 <q-option-group
                   v-model="formDialog.data.payment_method"
                   inline
-                  :options="[
-                    {label: 'Lightning', value: 'lightning'},
-                    {
-                      label: fiatCheckoutLabel,
-                      value: 'fiat'
-                    }
-                  ]"
+                  :options="paymentMethodOptions"
                 ></q-option-group>
               </div>
-              <div :class="allowFiatCheckout ? 'col-12 col-md-3' : 'col-12'">
+              <div
+                :class="
+                  paymentMethods.length > 1 ? 'col-12 col-md-3' : 'col-12'
+                "
+              >
                 <q-input
                   filled
                   dense

static/js/index.js

@@ -156,6 +156,7 @@ window.PageEvents = {
           allow_fiat: false,
           fiat_currency: 'GBP',
           extra: {
+            payment_methods: ['lightning'],
             promo_codes: [],
             notification_subject: '',
             notification_body: ''
@@ -271,12 +272,7 @@ window.PageEvents = {
     },
     saveSettings() {
       LNbits.api
-        .request(
-          'PUT',
-          '/events/api/v1/events/settings',
-          null,
-          this.settings
-        )
+        .request('PUT', '/events/api/v1/events/settings', null, this.settings)
         .then(() => {
           Quasar.Notify.create({type: 'positive', message: 'Settings saved'})
         })
@@ -351,9 +347,7 @@ window.PageEvents = {
     },
     republishMyEvents() {
       LNbits.utils
-        .confirmDialog(
-          'Re-emit your approved events to Nostr relays?'
-        )
+        .confirmDialog('Re-emit your approved events to Nostr relays?')
         .onOk(() => {
           this.republishingMine = true
           LNbits.api
@@ -420,6 +414,17 @@ window.PageEvents = {
             code: code.code.trim().toUpperCase()
           }))
       }
+      const methods = data.extra?.payment_methods || []
+      if (methods.length === 0) {
+        Quasar.Notify.create({
+          type: 'warning',
+          message: 'Select at least one payment method.'
+        })
+        return
+      }
+      // allow_fiat stays the fiat-currency carrier the backend and the
+      // NIP-52 tags read; keep it in lockstep with the checkbox list.
+      data.allow_fiat = methods.includes('fiat')
       if (!this.isFiatCurrency(data.currency)) {
         if (!data.allow_fiat) {
           data.fiat_currency = 'GBP'
@@ -439,6 +444,15 @@ window.PageEvents = {
         const end = this.splitDateTime(data.event_end_date)
         this.formDialog.data = {
           ...data,
+          extra: {
+            ...(data.extra || {}),
+            // Events created before extra.payment_methods existed carry an
+            // empty list; show the rails the backend actually accepts for
+            // them (Lightning always, fiat when allow_fiat).
+            payment_methods: data.extra?.payment_methods?.length
+              ? data.extra.payment_methods
+              : ['lightning', ...(data.allow_fiat ? ['fiat'] : [])]
+          },
           event_start_day: start.day,
           event_start_time: start.time,
           event_end_day: end.day,
@@ -454,6 +468,7 @@ window.PageEvents = {
           event_end_day: '',
           event_end_time: '',
           extra: {
+            payment_methods: ['lightning'],
             conditional: false,
             min_tickets: 1,
             email_notifications: false,
@@ -473,6 +488,7 @@ window.PageEvents = {
         allow_fiat: false,
         fiat_currency: 'GBP',
         extra: {
+          payment_methods: ['lightning'],
           email_notifications: false,
           nostr_notifications: false,
           promo_codes: [],

static/js/index.vue

@@ -20,10 +20,10 @@
             <div class="col">
               <span class="text-subtitle2">Republish to Nostr</span>
               <div class="text-caption text-grey-7" style="color: #aaa">
-                Re-emit every approved event so connected clients pick
-                up the latest tag set. Useful after the extension
-                publisher changes (e.g. new tickets_* tags) so existing
-                events don't need a per-event edit.
+                Re-emit every approved event so connected clients pick up the
+                latest tag set. Useful after the extension publisher changes
+                (e.g. new tickets_* tags) so existing events don't need a
+                per-event edit.
               </div>
             </div>
             <div class="col-auto">
@@ -56,8 +56,8 @@
             ></q-btn>
           </div>
           <div class="text-caption q-mt-sm" style="color: #aaa">
-            Re-emit your approved events to Nostr relays. Useful after
-            a publisher upgrade or if a relay dropped your events.
+            Re-emit your approved events to Nostr relays. Useful after a
+            publisher upgrade or if a relay dropped your events.
           </div>
         </q-card-section>
       </q-card>
@@ -228,7 +228,13 @@
                 <q-td v-for="col in props.cols" :key="col.name" :props="props">
                   <q-badge
                     v-if="col.name === 'status'"
-                    :color="col.value === 'approved' ? 'green' : col.value === 'proposed' ? 'orange' : 'red'"
+                    :color="
+                      col.value === 'approved'
+                        ? 'green'
+                        : col.value === 'proposed'
+                          ? 'orange'
+                          : 'red'
+                    "
                     :label="col.value"
                   ></q-badge>
                   <span v-else v-text="col.value"></span>
@@ -399,7 +405,13 @@
                 <q-td v-for="col in props.cols" :key="col.name" :props="props">
                   <q-badge
                     v-if="col.name === 'status'"
-                    :color="col.value === 'approved' ? 'green' : col.value === 'proposed' ? 'orange' : 'red'"
+                    :color="
+                      col.value === 'approved'
+                        ? 'green'
+                        : col.value === 'proposed'
+                          ? 'orange'
+                          : 'red'
+                    "
                     :label="col.value"
                   ></q-badge>
                   <span v-else v-text="col.value"></span>
@@ -587,15 +599,22 @@
               ></q-input>
             </div>
           </div>
-          <q-toggle
-            v-model="formDialog.data.allow_fiat"
-            label="Allow fiat checkout"
-            left-label
-            hint="Lets attendees pay through a configured fiat provider using the event currency."
-          ></q-toggle>
+          <div class="q-mt-sm">
+            <div class="text-caption text-grey-7">Payment methods *</div>
+            <q-option-group
+              v-model="formDialog.data.extra.payment_methods"
+              type="checkbox"
+              inline
+              :options="paymentMethodOptions"
+            ></q-option-group>
+            <div class="text-caption text-grey-7">
+              Card / fiat checkout goes through the fiat provider configured on
+              this LNbits instance. Untick Lightning for a card-only event.
+            </div>
+          </div>
           <q-select
             v-if="
-              formDialog.data.allow_fiat &&
+              acceptsFiat &&
               ['sat', 'sats'].includes(
                 (formDialog.data.currency || '').toLowerCase()
               )