Use view namespaces in Laravel controllers

laravel-view-namespaces.php

<?php

/**
 * Return a view under the controller's view namespace if one is set
 * 
 * @param string $template
 * @param array  $data
 * @param array  $mergeData
 *
 * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 */
public function view(string $template, array $data = [], array $mergeData = [])
{
    if ($this->hasViewNamespace() && $this->namespacedViewExists($template)) {
        return $this->namespacedView($template, $data, $mergeData);
    }

    return view($template, $data, $mergeData);
}

/**
 * Check if the controller has a view namespace
 *
 * @return bool
 */
private function hasViewNamespace() : bool
{
    return isset($this->viewNamespace);
}

/**
 * Assert that the template under the controller's view namespace exists
 *
 * @param $template
 *
 * @return bool
 */
private function namespacedViewExists(string $template) : bool
{
    return view()->exists(
        $this->buildNamespacedViewPath($template)
    );
}

/**
 * Return the requested template under the controller's view namespace
 *
 * @param string $template
 * @param array  $data
 * @param array  $mergeData
 *
 * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
 */
private function namespacedView(string $template, array $data = [], array $mergeData = [])
{
    return view(
        $this->buildNamespacedViewPath($template),
        $data,
        $mergeData
    );
}

/**
 * Build the path for the specified template under the controller's view namespace
 *
 * @param $template
 *
 * @return string
 */
private function buildNamespacedViewPath(string $template) : string
{
    return sprintf('%s.%s', $this->viewNamespace, $template);
}