Laravel Lecture 4: Route Naming and Route Grouping

Route naming

Route naming is for the program to easily obtain routing information. After obtaining this information, you can redirect or perform other operations. Routing commands are implemented through the name method. Next, let's name a route:

Route::get('about', function () {})->name('index.about');

After naming a route, you can get the url of the route through the assistant function route.

$url = route('index.about');
echo $url;  // http://localhost:8000/about

If we don’t want the front domain name part, but just want the back path, then we can do this

$url = route('index.about', [], false);
echo $url;  // /about

If we define a route with parameters, we can use the parameters as the route function The second parameter is passed in

Route::get('news/{id}', 'IndexController@news')->name('home.news');

...
return redirect()->route('home.news', ['id' => 23]);

The second parameter array element in the route function can automatically correspond to the routing parameters. If the second parameter array element in the route function is more than the parameters set by the route, it will Automatic splicing to generate URL

echo route('home.news', ['id' => 23, 'page' => 3, 'page_num' => 20]);
// http://localhost:8000/news/23?page=3&page_num=20

Route grouping

The role of routing grouping is that when the system has set many routes, but some routes are found to have If you have some common points, such as the same namespace prefix, or the same path prefix, you can put those routes that have common points into one route, which facilitates management and reduces the amount of code, and the code looks good. More elegant.

Route prefix

We put routes with the same prefix in a group. The following are two routes with the same prefix:

Route::prefix('index')->get('a', function () {
    return 'a'; // 匹配/index/a
});

Route::prefix('index')->get('b', function () {
    return 'b'; // 匹配/index/b
});

Now, we put them into a group

Route::prefix('index')->group(function ()
{
    Route::get('a', function () {
        return 'a'; // 匹配/index/a
    });
    Route::get('b', function () {
        return 'b'; // 匹配/index/b
    });
});

In addition to using the prefix method, you can also use the first parameter of the group method settings, as follows:

Route::group(['prefix' => 'index'], function ()
{
    Route::get('a', function () {
        return 'a'; // 匹配/index/a
    });
    Route::get('b', function () {
        return 'b'; // 匹配/index/b
    });
});

Namespace

Namespace is also a frequently used routing group.

Route::group(['namespace' => 'Home'], function ()
{
    Route::get('home/index', 'IndexController@index');
});

If the above code does not set a namespace, the above route will be

Route::get('home/index', 'Home\IndexController@index');

subdomain name

used Set which domain name can be accessed. If it is not this domain name, it cannot be accessed even if the path is correct.

Route::domain('php.cn')->group(...)

Name prefix

The name method can add a given prefix to the route in each routing group

Route::name('abc.')->group( function ()
{
    Route::get('home', function () {

    })->name('home');
});

……
$url = route('abc.home');

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