admin: make phase select dependent on chosen Wahl (dynamic phases)

includes/force-zuteilung.php

@@ -32,7 +32,7 @@ function kc_force_zuteilung_page() {
     // Listen f<>r Dropdowns
     $teilnehmer_liste = $wpdb->get_results("SELECT * FROM {$prefix}kc_teilnehmer ORDER BY nachname, vorname");
     $workshop_liste = $wpdb->get_results("SELECT * FROM {$prefix}kc_workshops ORDER BY name");
-    $wahlen = $wpdb->get_results("SELECT id, name FROM {$prefix}kc_wahlen WHERE deleted=0 ORDER BY name");
+    $wahlen = $wpdb->get_results("SELECT id, name, COALESCE(anzahl_einheiten,1) AS anzahl_einheiten FROM {$prefix}kc_wahlen WHERE deleted=0 ORDER BY name");
 
     // Bearbeiten
     if (isset($_GET['edit_force'])) {
@@ -106,11 +106,46 @@ function kc_force_zuteilung_page() {
 
         echo '</form>';
         echo '</div>';
+        // Prepare JS mapping of wahl_id -> number of phases
+        $wahl_phases = [];
+        foreach ($wahlen as $w) $wahl_phases[intval($w->id)] = intval($w->anzahl_einheiten);
+
+        echo '<script>var kcWahlPhases = ' . wp_json_encode($wahl_phases) . ';</script>';
         echo '<script>
         jQuery(function($){
             $("#kc-force-teilnehmer-dropdown").select2({placeholder:"Teilnehmer auswählen…",allowClear:true});
             $("#kc-force-wahl-dropdown").select2({placeholder:"Wahl auswählen…",allowClear:true});
             $("#kc-force-workshop-dropdown").select2({placeholder:"Workshop auswählen…",allowClear:true});
+
+            function refreshPhaseSelect($wahlSelect, $phaseSelect, current) {
+                var wid = parseInt($wahlSelect.val(),10);
+                var max = (wid && kcWahlPhases[wid]) ? parseInt(kcWahlPhases[wid],10) : 1;
+                $phaseSelect.empty();
+                for(var i=1;i<=max;i++){
+                    var opt = $('<option>').val(i).text(i + (i===1? ' (Phase)':' (Phase)'));
+                    $phaseSelect.append(opt);
+                }
+                if (current) {
+                    $phaseSelect.val(current);
+                }
+                $phaseSelect.prop('disabled', false);
+            }
+
+            // Bind change for all existing wahl selects on the page
+            $(document).on('change', '#kc-force-wahl-dropdown', function(){
+                var $w = $(this);
+                var $phase = $w.closest('form').find('[name="phase"]');
+                refreshPhaseSelect($w, $phase);
+            });
+
+            // Initialize existing phase selects based on their selected wahl
+            $('[name="phase"]').each(function(){
+                var $phase = $(this);
+                var $form = $phase.closest('form');
+                var $wahl = $form.find('#kc-force-wahl-dropdown');
+                var current = $phase.val();
+                refreshPhaseSelect($wahl, $phase, current);
+            });
         });
         </script>';
         echo '</div>';