@@ -82,15 +82,30 @@

                 {% if buchen.buchbar %}

                     <form hx-post="/_ajax/vr_wa/v1/slot?do=reservate" enctype="multipart/form-data">

                         <input type="hidden" name="id" value="{{ id }}">

-                        <fieldset>

-                            <label for="res-behaelter"><strong>Liefernde Behältermenge<sup class="text-danger">*</sup></strong></label>

-                            <select id="res-behaelter" name="behaelter" required>

-                                <option value="">-</option>

-                                {% for option in buchen.behaelter %}

-                                    <option value="{{ option }}">{{ option }}</option>

-                                {% endfor %}

-                            </select>

-                        </fieldset>

+                        <div class="grid-md u-gap-2">

+                            <div class="grid-c-6 mb-2 mb-0-md">

+                                <fieldset>

+                                    <label for="res-behaeltereinheit"><strong>Liefernde Behältereinheit<sup class="text-danger">*</sup></strong></label>

+                                    <select id="res-behaeltereinheit" name="unit" hx-get="/_ajax/vr_wa/v1/slot?do=availableUnitAmount&id={{ id }}" hx-target="#res-behaelter" hx-indicator="#wa-slot-{{ id }}">

+                                        <option value="">{{ 'tl_vr_wa_units.containers.0'|trans([], 'contao_tl_vr_wa_units') }}</option>

+                                        {% for value, option in buchen.units %}

+                                            <option value="{{ value }}">{{ option }}</option>

+                                        {% endfor %}

+                                    </select>

+                                </fieldset>

+                            </div>

+                            <div class="grid-c-6 mb-2 mb-0-md">

+                                <fieldset>

+                                    <label for="res-behaelter"><strong>Menge<sup class="text-danger">*</sup></strong></label>

+                                    <select id="res-behaelter" name="behaelter" required>

+                                        <option value="">-</option>

+                                        {% for option in buchen.behaelter %}

+                                            <option value="{{ option }}">{{ option }}</option>

+                                        {% endfor %}

+                                    </select>

+                                </fieldset>

+                            </div>

+                        </div>

                         <fieldset>

                             <label for="res-upload"><strong>Dateianhang</strong></label>

                             <input type="file" id="res-upload" name="upload">

@@ -106,6 +121,8 @@

                 {% endif %}

             </div>

+

+            <div class="loader animated loading"></div>

         </div>

     {% if modal %}</div>{% endif %}

 {% endblock %}

@@ -36,6 +36,7 @@ use vonRotenberg\WeinanlieferungBundle\Model\WeinanlieferungLeseartModel;

 use vonRotenberg\WeinanlieferungBundle\Model\WeinanlieferungRebsorteModel;

 use vonRotenberg\WeinanlieferungBundle\Model\WeinanlieferungReservationModel;

 use vonRotenberg\WeinanlieferungBundle\Model\WeinanlieferungSlotsModel;

+use vonRotenberg\WeinanlieferungBundle\Model\WeinanlieferungUnitsModel;

 /**

  * @Route("/_ajax/vr_wa/v1/slot", name="vr_wa_slot_ajax", defaults={"_scope" = "frontend", "_token_check" = false})

@@ -91,6 +92,9 @@ class SlotAjaxController extends AbstractController

             case 'updateReservation':

                 return $this->updateReservation();

+            case 'availableUnitAmount':

+                return $this->renderAvailableUnitAmount();

+

             case 'delete':

                 return $this->deleteReservation();

         }

@@ -125,6 +129,19 @@ class SlotAjaxController extends AbstractController

         // Build data

         $intAvailableBehaelter = max(0,$Slot->getAvailableBehaelter());

+        $arrUnits = [];

+

+        if (($Site = $Slot->getRelated('pid')) !== null)

+        {

+            if (($Units = $Site->getRelated('units')) !== null)

+            {

+                foreach ($Units as $unit)

+                {

+                    $arrUnits[$unit->id] = $unit->title . ' (' . $unit->containers . ' '.$this->translator->trans('tl_vr_wa_units.containers.0', [], 'contao_tl_vr_wa_units').')';

+                }

+            }

+

+        }

         $arrData = [

             'modal' => $blnModal,

@@ -137,6 +154,7 @@ class SlotAjaxController extends AbstractController

             'buchen' => [

                 'buchbar' => (boolean) $intAvailableBehaelter,

                 'behaelter' => range(min($intAvailableBehaelter,1),$intAvailableBehaelter),

+                'units' => $arrUnits,

             ],

             'reservations' => $arrReservations

         ];

@@ -484,4 +502,40 @@ class SlotAjaxController extends AbstractController

         return $this->render('@Contao/modal_unauthorized.html.twig');

     }

+    protected function renderAvailableUnitAmount(): Response

+    {

+        if (empty($_REQUEST['id']))

+        {

+            return new Response('Required parameter missing',412);

+        }

+

+        if (($Slot = WeinanlieferungSlotsModel::findPublishedById($_REQUEST['id'])) === null)

+        {

+            return new Response('Could not load slot data',500);

+        }

+

+        $intAvailableBehaelter = max(0,$Slot->getAvailableBehaelter());

+        $intAmount = $intAvailableBehaelter;

+

+        if (!empty($_REQUEST['unit']) && intval($_REQUEST['unit']) > 0)

+        {

+            if (($Site = $Slot->getRelated('pid')) === null || ($Unit = WeinanlieferungUnitsModel::findByPk($_REQUEST['unit'])) === null)

+            {

+                return new Response('Could not load unit data', 500);

+            }

+

+            $intAmount = floor($intAvailableBehaelter / max(1, $Unit->containers));

+        }

+

+        $strOutput = "<select id=\"res-behaelter\" name=\"behaelter\" required>

+<option value=\"\">-</option>\n";

+        for ($i = 1; $i <= $intAmount; $i++)

+        {

+            $strOutput .= "<option value=\"$i\">$i</option>\n";

+        }

+        $strOutput .= "</select>\n";

+

+        return new Response($strOutput);

+    }

+

 }