added attribute casting

app/Models/Setting/Tax.php

@@ -25,6 +25,16 @@ class Tax extends Model
      */
     protected $fillable = ['company_id', 'name', 'rate', 'type', 'enabled'];
 
+    /**
+     * The attributes that should be cast.
+     *
+     * @var array
+     */
+    protected $casts = [
+        'rate' => 'double',
+        'enabled' => 'boolean',
+    ];
+
     /**
      * Sortable columns.
      *
@@ -101,17 +111,6 @@ class Tax extends Model
         return $query->where($this->table . '.type', '<>', 'withholding');
     }
 
-    /**
-     * Convert rate to double.
-     *
-     * @param  string  $value
-     * @return void
-     */
-    public function setRateAttribute($value)
-    {
-        $this->attributes['rate'] = (double) $value;
-    }
-
     /**
      * Get the name including rate.
      *