Laravel Lecture 3: Global constraints on routing parameters, routing redirection and routing view binding

A previous article has already explained some knowledge about routing, and I will continue to add a few points today.

Global constraints of routing parameters

We already know that we can use the where method to constrain parameters, as follows:

Route::get('news/{id}', function ($id) { echo 'news:' . $id; })->where('id', '[0-9]+'); Route::get('list/{id}', function ($id) { echo 'list:' . $id; })->where('id', '[0-9]+');

About This ID is used by multiple routes and the constraints are the same. Then, we can constrain ids on a global scale. In this way, local routing does not need to be constrained, and the code will not be redundant.

Now, let’s edit the boot method in app/Providers/RouteServiceProvider.php and add a line of code, as follows:

public function boot() { Route::pattern('id', '[0-9]+'); parent::boot(); }

Once defined, these rules will be automatically applied to all on the route using this parameter name. But if I want to cancel this restriction or reset parameter rules on individual routes, how should I do it?

To reset, just reset the rules in the where method

Route::get('news/{id}', function ($id) { echo 'news:' . $id; })->where('id', '[a-z]');

The method to cancel the restriction is actually to reset the rules, but use .* in the rules to regularize any characters

Route::get('news/{id}', function ($id) { echo 'news:' . $id; })->where('id', '.*');

Route redirection

We can jump from one route to another address or another route, just use the redirect method of Route

// 跳转到php中文网 Route::redirect('index', ' // 跳转到本站另一个路由 Route::redirect('a', 'news/1');

The default route redirection uses 302 temporary redirection. If you want to set up a 301 permanent redirection, you need to set the third parameter or use another method, which is permanentRedirect.

Route::redirect('b', 'news/1', 301); Route::permanentRedirect('c', 'news/2');

Routing and view binding

Routing can also be directly bound to the view without going through the controller. Here we need to use the view method, which has three parameters: uri (required parameters), view name (required parameters), and parameters (optional parameters).

Route::view('vtest', 'view1', ['str' => 'study laravel']);

Now let’s create a view file named view1 and create a view1.blade.php file in the resources/views directory. The content of the file is as follows:

view1{{$str}}

In addition to using Route::view In addition, you can also use the global view function in the closure of get or other methods to achieve the same effect.

Route::get('vtest', function () { return view('view1', ['str' => 'study laravel2']); });

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