turnstile

commit a16c57558202aa03fc3fb7e76663b183c801c6de
parent d5f2bef8f5e376741cc04369749b70f50b0bd68a
Author: Christian Grothoff <christian@grothoff.org>
Date:   Wed,  5 Nov 2025 20:27:07 +0100

add price/subscription hints on payment page

Diffstat:
M
src/Entity/TurnstilePriceCategory.php
 | 
47
+++++++++++++++++++++++++++++++++++++++++++++++
M
src/Form/PriceCategoryForm.php
 | 
11
++++++++---
M
taler_turnstile.module
 | 
4
++++
M
templates/taler-turnstile-payment-button.html.twig
 | 
6
++++++

4 files changed, 65 insertions(+), 3 deletions(-)
diff --git a/src/Entity/TurnstilePriceCategory.php b/src/Entity/TurnstilePriceCategory.php
@@ -91,6 +91,53 @@ class TurnstilePriceCategory extends ConfigEntityBase {
   }
 
   /**
+   * Gets a brief hint to display about non-subscriber prices.
+   *
+   * @return string
+   *   A hint about the price
+   */
+  public function getPriceHint() {
+    $prices = $this->getPrices();
+    $nosub = $prices['%none%'];
+    $rval = NULL;
+    foreach ($nosub as $currency => $price) {
+      if (NULL === $rval)
+      {
+        $rval = "$price $currency";
+      }
+      else
+      {
+        $rval = "$price $currency, " . $rval;
+      }
+    }
+    return $rval ?? $this->t(/* Need to buy a subscription */ 'Not sold individually');
+  }
+
+  /**
+   * Gets a brief hint to display about applicable subscriptions.
+   *
+   * @return string
+   *   A hint about subscriptions
+   */
+  public function getSubscriptionHint() {
+    $prices = $this->getPrices();
+    $rval = NULL;
+    foreach ($prices as $subscription => $details) {
+      if ('%none%' === $subscription)
+        continue;
+      if (NULL === $rval)
+      {
+        $rval = $subscription;
+      }
+      else
+      {
+        $rval = $subscription . ", " . $rval;
+      }
+    }
+    return $rval ?? $this->t(/* No subscriptions */ 'None');
+  }
+
+  /**
    * Gets all prices.
    *
    * @return array
diff --git a/src/Form/PriceCategoryForm.php b/src/Form/PriceCategoryForm.php
@@ -130,7 +130,7 @@ class PriceCategoryForm extends EntityForm {
     parent::validateForm($form, $form_state);
 
     $prices = $form_state->getValue('prices');
-
+    $ok = FALSE;
     if (is_array($prices)) {
       foreach ($prices as $subscription_id => $currencies) {
         if (is_array($currencies)) {
@@ -147,10 +147,17 @@ class PriceCategoryForm extends EntityForm {
                 $this->t('Prices cannot be negative.')
               );
             }
+            $ok = TRUE;
           }
         }
       }
     }
+    if (! $ok) {
+      $form_state->setErrorByName(
+        "",
+        $this->t('At least one price must be set.')
+      );
+    }
   }
 
 
@@ -164,11 +171,9 @@ class PriceCategoryForm extends EntityForm {
     $prices = $form_state->getValue('prices');
     $filtered_prices = [];
     foreach ($prices as $subscription_id => $currencies) {
-      $sub_active = FALSE;
       foreach ($currencies as $currency_code => $price) {
         if ($price !== '') {
           $filtered_prices[$subscription_id][$currency_code] = $price;
-          $sub_active = TRUE;
         }
       }
     }
diff --git a/taler_turnstile.module b/taler_turnstile.module
@@ -164,6 +164,8 @@ function taler_turnstile_entity_view_alter(array &$build, EntityInterface $entit
       '#session_id' => $order_info['session_id'],
       '#payment_url' => $order_info['payment_url'],
       '#node_title' => $node->getTitle(),
+      '#price_hint' => $price_category->getPriceHint(),
+      '#subscription_hint' => $price_category->getSubscriptionHint(),
       '#attached' => [
         'library' => ['taler_turnstile/payment_button'],
       ],
@@ -278,6 +280,8 @@ function taler_turnstile_theme() {
         'session_id' => NULL,
         'payment_url' => NULL,
         'node_title' => NULL,
+        'price_hint' => NULL,
+        'subscription_hint' => NULL,
       ],
       'template' => 'taler-turnstile-payment-button',
     ],
diff --git a/templates/taler-turnstile-payment-button.html.twig b/templates/taler-turnstile-payment-button.html.twig
@@ -24,6 +24,12 @@
       {{ 'Open GNU Taler payment Web page'|t }}
     </a>
   </div>
+  <div class="taler-turnstile-payment-pricing">
+    <h4>{{ 'Price per article'|t}}</h4>
+    <p class="taler-turnstile-hint-price">{{ price_hint }}</p><br>
+    <h4>{{ 'Acceptable subscriptions'|t}}</h4>
+    <p class="taler-turnstile-hint-subscriptions">{{ subscription_hint }}</p>
+  </div>
 
   <div class="taler-turnstile-payment-status">
     <p class="taler-turnstile-status-message">{{ 'Waiting for payment...'|t }}</p>