Rearrange ouput JSON to eliminate a Laravel 5.x "Pivot" table and just return the single value. Can be used for all sorts of remapping.

model_file.php

 public function toArray()
    {
        $attributes = $this->attributesToArray();
        $attributes = array_merge($attributes, $this->relationsToArray());

        // Detect if there is a pivot value and return that as the default value
        if (isset($attributes['pivot']['value'])) {
            $attributes['value'] = $attributes['pivot']['value'];
            unset($attributes['pivot']);
        }
        return $attributes;
    }