Laravel is a commonly used PHP web application framework that is widely used to build the backend of projects. When we use Laravel to build a backend management system, it will inevitably involve the problem of jumping between pages. Because Laravel uses the MVC design pattern, its routing and controllers are key components for page jumps.

In this article, we will introduce step by step how to use Laravel's routing function and controller to implement page jumps in the background management system.

1. Laravel routing

In Laravel, routing defines the relationship between the URI requested by the application and the operating program. Routes define how an application responds to client requests and are the bridge connecting requests to controller methods. We can implement page jumps in the background management system by defining routes.

In Laravel, routing is defined in the routes/web.php file. The following is a simple routing definition example:

Route::get('/admin/dashboard',?'DashboardController@index');

This routing definition tells Laravel that requests using the GET method to access the URI /admin/dashboard will be routed to the index method of the DashboardController controller class.

Here we can see that the route definition includes two main parts: request method and URI, as well as the corresponding controller method.

2. Laravel Controller

The controller is one of the components in the Laravel application. It is responsible for processing requests and generating responses. We can realize the page jump of the background management system by defining a controller.

In Laravel, controllers are defined in the app/Http/Controllers directory. The following is a simple controller class definition example:

namespace?App\Http\Controllers;

use?Illuminate\Http\Request;

class?DashboardController?extends?Controller
{
????public?function?index()
????{
????????return?view('admin.dashboard');
????}
}

This controller class includes a method: index(), which returns a view named admin.dashboard. In Laravel, a view refers to the template used to render an HTML interface, which is usually returned by a controller method.

3. Page jump

With routing and controller, we can easily realize page jump in the background management system.

For example, if we want to jump to the page of a certain module when clicking the button of the module in the background management system, we can use the following code:

Route::get('/admin/products',?'ProductController@index');

Define the index method in ProductController, Return to the view showing the product list:

public?function?index()
{
????return?view('admin.products');
}

Then add buttons and links to the view, and use the URL::to() and route() functions to generate the URL to jump to:

<a href="{{ URL::to(&#39;/admin/products&#39;) }}" class="btn btn-primary">產(chǎn)品列表</a>

<a href="{{ route(&#39;admin.products.index&#39;) }}" class="btn btn-outline-primary">產(chǎn)品列表</a>

A button generates a URL using the URL::to() function, taking /admin/products as a parameter. This function can generate any URL, including URLs with parameters.

The second button uses the route() function to generate the URL, which uses the name of the route to generate the URL. We can use the name option to name the route:

Route::get('/admin/products',?'ProductController@index')->name('admin.products.index');

Then we can use the route() function to generate the URL of the route.

4. Summary

In this article, we introduced how to use Laravel's routing and controller to implement page jumps in the background management system. Routing is a key part of defining the relationship between application requests and operators, while controllers are responsible for handling requests and producing responses. Page jumps can be achieved by defining request and response methods in routes and controllers. By using Laravel's routes and controllers, we can easily build modern, responsive and powerful web applications.

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