added cache to preordercampaign

application/Preordercampaign/PreordercampaignController.php

@@ -27,6 +27,28 @@ class PreordercampaignController extends mfBaseController {
 
 
         $campaigns = array_map(function ($c) {
+            // Helper function for field caching
+            $getCachedField = function ($campaignId, $cacheType, $callback) {
+                $cacheKey = md5($campaignId . $cacheType);
+                $cacheDir = TEMP_DIR . "/Preordercampaign/";
+                $cacheFile = $cacheDir . $cacheKey . ".json";
+
+                // Create directory if missing
+                if (!is_dir($cacheDir)) {
+                    mkdir($cacheDir, 0755, true);
+                }
+
+                // Return cached value if fresh
+                if (file_exists($cacheFile) && time() - filemtime($cacheFile) < 3600) {
+                    return json_decode(file_get_contents($cacheFile), true);
+                }
+
+                // Generate and cache new value
+                $value = $callback();
+                file_put_contents($cacheFile, json_encode($value));
+                return $value;
+            };
+
             return [
                 'id' => $c->id,
                 'network_id' => $c->network_id,
@@ -36,10 +58,16 @@ class PreordercampaignController extends mfBaseController {
                 'area' => $c->area,
                 'from' => $c->from,
                 'to' => $c->to,
-                'rimo_workoders' => $c->workorder_count,
-                'active_preorder_count' => PreorderModel::countActivePreorder($c->id),
-                'count_total_units' => PreorderModel::countTotalUnits($c->id),
-                ];
+                'rimo_workoders' => $getCachedField($c->id, 'workorders', function() use ($c) {
+                    return $c->workorder_count;
+                }),
+                'active_preorder_count' => $getCachedField($c->id, 'active_count', function() use ($c) {
+                    return PreorderModel::countActivePreorder($c->id);
+                }),
+                'count_total_units' => $getCachedField($c->id, 'total_units', function() use ($c) {
+                    return PreorderModel::countTotalUnits($c->id);
+                }),
+            ];
         }, PreordercampaignModel::search($filter));
 
         $net_owners = array_map(function ($n) {