Order/location of columns is now variable

app/Casts/CommaSeparatedArrayCast.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Casts;
+
+use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
+
+class CommaSeparatedArrayCast implements CastsAttributes
+{
+    /**
+     * Array of settings that should be cast
+     */
+    private array $shouldCast = [
+        'visible_columns',
+    ];
+
+    /**
+     * Cast the given value.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @param  string  $key
+     * @param  mixed  $value
+     * @param  array  $attributes
+     * @return mixed
+     */
+    public function get($model, $key, $value, $attributes)
+    {
+        if (!in_array($model->name, $this->shouldCast)) {
+            return $value;
+        }
+
+        return explode(',', $value);
+    }
+
+    /**
+     * Prepare the given value for storage.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @param  string  $key
+     * @param  mixed  $value
+     * @param  array  $attributes
+     * @return mixed
+     */
+    public function set($model, $key, $value, $attributes)
+    {
+        if (!in_array($model->name, $this->shouldCast)) {
+            return $value;
+        }
+
+        return implode(',', $value);
+    }
+}