refactor: enhance key retrieval logic for array manipulations across multiple classes

Author: yajra

src/CollectionDataTable.php

@@ -189,7 +189,8 @@ private function revertIndexColumn($mDataSupport): void
             $start = $this->request->start();
 
             $this->collection->transform(function ($data) use ($index, &$start) {
-                $data[$index] = ++$start;
+                $indexKey = is_string($index) || is_int($index) ? $index : 0;
+                $data[$indexKey] = ++$start;
 
                 return $data;
             });

src/DataTableAbstract.php

@@ -433,7 +433,8 @@ public function with(mixed $key, mixed $value = ''): static
         if (is_array($key)) {
             $this->appends = $key;
         } else {
-            $this->appends[$key] = value($value);
+            $appendsKey = is_string($key) || is_int($key) ? $key : (string) $key;
+            $this->appends[$appendsKey] = value($value);
         }
 
         return $this;

src/DataTables.php

@@ -47,8 +47,12 @@ public static function make($source)
 
         $args = func_get_args();
         foreach ($builders as $class => $engine) {
-            if ($source instanceof $class) {
-                $callback = [$engines[$engine], 'create'];
+            if (is_string($class) && class_exists($class) && $source instanceof $class) {
+                $engineClass = is_string($engine) && isset($engines[$engine]) ? $engines[$engine] : null;
+                if ($engineClass === null) {
+                    continue;
+                }
+                $callback = [$engineClass, 'create'];
 
                 if (is_callable($callback)) {
                     /** @var \Yajra\DataTables\DataTableAbstract $instance */

src/Processors/DataProcessor.php

@@ -78,7 +78,8 @@ public function process($object = false): array
             $value = $this->removeExcessColumns($value);
 
             if ($this->includeIndex) {
-                $value[$indexColumn] = ++$this->start;
+                $indexKey = is_string($indexColumn) ? $indexColumn : 'DT_RowIndex';
+                $value[$indexKey] = ++$this->start;
             }
 
             $this->output[] = $object ? $value : $this->flatten($value);

src/Utilities/Helper.php

@@ -18,8 +18,11 @@ class Helper
      */
     public static function includeInArray(array $item, array $array): array
     {
+        $itemName = isset($item['name']) && is_string($item['name']) ? $item['name'] : '';
+        $itemContent = $item['content'] ?? null;
+        
         if (self::isItemOrderInvalid($item, $array)) {
-            return array_merge($array, [$item['name'] => $item['content']]);
+            return array_merge($array, [$itemName => $itemContent]);
         }
 
         $count = 0;
@@ -36,7 +39,7 @@ public static function includeInArray(array $item, array $array): array
             $count++;
         }
 
-        return array_merge($first, [$item['name'] => $item['content']], $last);
+        return array_merge($first, [$itemName => $itemContent], $last);
     }
 
     /**