Refactor TemplatePreviewController to support template content retrieval by ID: Updated the preview method to accept a record ID for fetching template content from the database. Introduced a private method to handle content retrieval for header, footer, and section templates. Enhanced error handling for empty content scenarios, improving the overall robustness of the template preview functionality.

app/Http/Controllers/TemplatePreviewController.php

@@ -2,6 +2,9 @@
 
 namespace App\Http\Controllers;
 
+use App\Models\HeaderTemplate;
+use App\Models\FooterTemplate;
+use App\Models\SectionTemplate;
 use App\Services\TemplatePreviewService;
 use Illuminate\Http\Request;
 
@@ -11,11 +14,11 @@ class TemplatePreviewController extends Controller
      * Render template preview
      *
      * @param Request $request
-     * @return \Illuminate\View\View
+     * @return \Illuminate\Http\Response
      */
     public function preview(Request $request)
     {
-        $content = $request->input('content', '');
+        $recordId = $request->input('record_id');
         $type = $request->input('type', 'section'); // header, footer, section
 
         // Validate type
@@ -23,10 +26,40 @@ class TemplatePreviewController extends Controller
             $type = 'section';
         }
 
+        // ID varsa veritabanından çek, yoksa eskisi gibi çalış
+        $content = '';
+        if ($recordId) {
+            $content = $this->getTemplateContent($recordId, $type);
+        } else {
+            // Fallback: eski yöntem (content gönderimi)
+            $content = $request->input('content', '');
+        }
+
+        if (empty($content)) {
+            return response('No content to preview', 400);
+        }
+
         $html = TemplatePreviewService::getPreviewHtml($content, $type);
 
         return response($html)
             ->header('Content-Type', 'text/html; charset=utf-8');
     }
+
+    /**
+     * Get template content from database by ID
+     *
+     * @param int $id
+     * @param string $type
+     * @return string
+     */
+    private function getTemplateContent(int $id, string $type): string
+    {
+        return match($type) {
+            'header' => HeaderTemplate::find($id)?->html_content ?? '',
+            'footer' => FooterTemplate::find($id)?->html_content ?? '',
+            'section' => SectionTemplate::find($id)?->html_content ?? '',
+            default => '',
+        };
+    }
 }