Generating URLs in Laravel: Helper Functions, Current URL Retrieval, Named Routes, and Controller URLs

Laravel provides several built-in methods for generating and retrieving URLs, which are essential for any web framework.

Helper function url

The url helper can generate any URL; if no domain is supplied, it defaults to the application's domain.

<code>echo url('http://baidu.com'); // http://baidu.com</code>
<code>echo url('/users/get/3'); // http://localhost:8000/users/get/3</code>

Getting the current URL

Laravel offers multiple methods to obtain the current request URL:

<code>echo url()->current(); // current URL without query string</code>
<code>echo url()->full(); // full URL including query string</code>
<code>echo url()->previous(); // previous URL</code>

Additional request methods include:

$request->path() – returns only the path component.

$request->url() – same as url()->current() , without query string.

$request->fullUrl() – equivalent to url()->full() , includes query string.

Named route URLs

Routes can be assigned a name and later referenced to generate their URLs. Example:

<code>Route::get('/news', function () {})->name('news');</code>

Retrieve the URL:

<code>echo route('news');</code>

When the route has parameters, pass them as the second argument:

<code>Route::get('/news/page/{page}/page_num/{pageNum}', function () {})->name('news');

echo route('news', ['page' => 1, 'pageNum' => 15]);</code>

Controller URLs

Use the action helper to generate URLs to controller actions:

<code>$url = action('IndexController@index');</code>

If the controller method requires parameters, provide them as the second argument:

<code>$url = action('IndexController@index', ['id' => 1]);</code>

The article was contributed by the certified author “齐天大圣” on php中文网.