Fix: Template delete page refresh + add debug logging

ISSUE: Template delete returns success but record appears not deleted

ROOT CAUSE: Delete WAS working (verified in database), but page wasn't refreshing properly after success

CHANGES:

1. JavaScript fix (discharge_templates.php):
   - Replaced conditional load_form_div / location.assign logic
   - Now uses simple location.reload() after 500ms delay
   - Ensures page always refreshes after successful delete

2. Controller debug logging (Template.php):
   - Added comprehensive debug logs to trace delete flow
   - Logs: request ID, row fetch, query compilation, affected rows
   - Logs error codes and messages for troubleshooting
   - Will help diagnose future issues

VERIFIED:
- Database confirmed template ID 2 was deleted
- Only frontend refresh was failing
- Now forces reload to show updated list

app/Controllers/Setting/Template.php

@@ -2977,23 +2977,58 @@ HTML;
         $id = (int) $id;
         $ok = false;
         $message = 'Unable to delete template.';
+        
+        log_message('debug', 'Delete request for template ID: ' . $id);
+        
         if ($id > 0 && $this->db->tableExists('ipd_discharge_templates')) {
             $row = $this->db->table('ipd_discharge_templates')
                 ->where('id', $id)
                 ->get(1)
                 ->getRowArray() ?? [];
 
-            if (! empty($row)) {
-                $ok = (bool) $this->db->table('ipd_discharge_templates')->where('id', $id)->delete();
+            log_message('debug', 'Row fetched: ' . json_encode($row));
 
-                if (! $ok) {
-                    // Some legacy/live schemas may reject delete via engine constraints; archive instead.
-                    $ok = (bool) $this->db->table('ipd_discharge_templates')
-                        ->where('id', $id)
-                        ->update(['status' => 0, 'is_default' => 0]);
-                    if ($ok) {
-                        $message = 'Template archived.';
+            if (! empty($row)) {
+                try {
+                    // Try to delete the record
+                    $deleteQuery = $this->db->table('ipd_discharge_templates')->where('id', $id);
+                    log_message('debug', 'Delete query: ' . $deleteQuery->getCompiledDelete(false));
+                    
+                    $deleteQuery->delete();
+                    $affectedRows = $this->db->affectedRows();
+                    log_message('debug', 'Delete affected rows: ' . $affectedRows);
+                    
+                    if ($affectedRows > 0) {
+                        $ok = true;
+                        $message = 'Template deleted.';
+                        log_message('debug', 'Delete successful');
+                    } else {
+                        // Delete didn't affect any rows - try archive instead
+                        log_message('error', 'Delete affected 0 rows for template ID: ' . $id);
+                        
+                        $updateQuery = $this->db->table('ipd_discharge_templates')->where('id', $id);
+                        log_message('debug', 'Archive query: ' . $updateQuery->getCompiledUpdate(['status' => 0, 'is_default' => 0], false));
+                        
+                        $updateResult = $updateQuery->update(['status' => 0, 'is_default' => 0]);
+                        $updateAffected = $this->db->affectedRows();
+                        
+                        log_message('debug', 'Archive affected rows: ' . $updateAffected);
+                        
+                        if ($updateResult && $updateAffected > 0) {
+                            $ok = true;
+                            $message = 'Template archived.';
+                        } else {
+                            log_message('error', 'Archive also affected 0 rows for template ID: ' . $id);
+                            $dbError = $this->db->error();
+                            log_message('error', 'Database error code: ' . $dbError['code'] . ', message: ' . $dbError['message']);
+                            $message = 'Database error: ' . ($dbError['message'] ?? 'No rows affected');
+                        }
                     }
+                } catch (\Exception $e) {
+                    log_message('error', 'Exception during delete: ' . $e->getMessage());
+                    log_message('error', 'Exception trace: ' . $e->getTraceAsString());
+                    $message = 'Exception: ' . $e->getMessage();
+                    $ok = false;
                 }
 
                 if ($ok && (int) ($row['is_default'] ?? 0) === 1) {
@@ -3014,9 +3049,15 @@ HTML;
                 if ($ok && $message === 'Unable to delete template.') {
                     $message = 'Template deleted.';
                 }
+            } else {
+                log_message('error', 'Row not found for template ID: ' . $id);
             }
+        } else {
+            log_message('error', 'Invalid ID or table does not exist. ID: ' . $id . ', Table exists: ' . ($this->db->tableExists('ipd_discharge_templates') ? 'yes' : 'no'));
         }
 
+        log_message('debug', 'Final result - OK: ' . ($ok ? 'true' : 'false') . ', Message: ' . $message);
+
         if ($this->request->isAJAX()) {
             return $this->response->setJSON([
                 'update' => $ok ? 1 : 0,

app/Views/Setting/Template/discharge_templates.php

@@ -641,11 +641,10 @@ $status = (int) ($edit['status'] ?? 1);
 
                     setNotice('success', data.error_text || 'Template deleted successfully.');
 
-                    if (typeof load_form_div === 'function') {
-                        load_form_div('<?= base_url('setting/template/discharge_templates') ?>', 'maindiv', 'IPD Discharge Template');
-                    } else {
-                        window.location.assign('<?= base_url('setting/template/discharge_templates') ?>');
-                    }
+                    // Force page reload to show updated list
+                    setTimeout(function() {
+                        window.location.reload();
+                    }, 500);
                 })
                 .catch(function () {
                     setNotice('danger', 'Network error while deleting template.');

check_table_structure.php

@@ -0,0 +1,50 @@
+<?php
+// Quick script to check table structure
+define('FCPATH', __DIR__ . DIRECTORY_SEPARATOR . 'public' . DIRECTORY_SEPARATOR);
+
+// Bootstrap CI4
+require __DIR__ . '/vendor/autoload.php';
+$pathsConfig = new Config\Paths();
+$bootstrap = \CodeIgniter\Boot::bootWeb($pathsConfig);
+$app = $bootstrap->getCodeIgniter();
+
+// Get database connection
+$db = \Config\Database::connect();
+
+// Check table creation SQL
+$query = $db->query("SHOW CREATE TABLE ipd_discharge_templates");
+$row = $query->getRowArray();
+
+echo "Table Structure:\n";
+echo "================\n\n";
+echo $row['Create Table'] . "\n\n";
+
+// Check for foreign key references
+$query = $db->query("
+    SELECT 
+        TABLE_NAME,
+        COLUMN_NAME,
+        CONSTRAINT_NAME,
+        REFERENCED_TABLE_NAME,
+        REFERENCED_COLUMN_NAME
+    FROM
+        INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+    WHERE
+        REFERENCED_TABLE_NAME = 'ipd_discharge_templates'
+        AND TABLE_SCHEMA = DATABASE()
+");
+
+echo "\nForeign Keys Referencing This Table:\n";
+echo "====================================\n\n";
+$results = $query->getResultArray();
+if (count($results) > 0) {
+    foreach ($results as $row) {
+        echo "Table: {$row['TABLE_NAME']}\n";
+        echo "Column: {$row['COLUMN_NAME']}\n";
+        echo "Constraint: {$row['CONSTRAINT_NAME']}\n";
+        echo "References: {$row['REFERENCED_TABLE_NAME']}.{$row['REFERENCED_COLUMN_NAME']}\n\n";
+    }
+} else {
+    echo "No foreign keys reference this table.\n";
+}
+