How to jump and output pages in Laravel

Laravel is a popular PHP framework that provides powerful routing functions, allowing us to easily route requests to specified controller methods.

In Laravel, controller methods are usually responsible for processing requests and returning corresponding responses. However, sometimes we need to redirect inside the controller method, or output some view pages. So, how to jump and output pages in Laravel? This article will introduce these two operations in Laravel in detail.

1. Laravel redirection

Redirection refers to the process of redirecting user requests to another URL. In Laravel, we can use the redirect() method to implement redirection.

In the controller method, we can use the following code to redirect to the specified URL:

return redirect('http://www.example.com');

In the above code, we use the redirect() method to create A redirect response. This method receives a URL parameter, indicating the URL that needs to be redirected. In actual use, we can also use the route name or controller method name as a parameter.

In addition to redirecting to the specified URL, we can also use the following code to redirect to the previous page or refresh the current page:

return redirect()->back();

or

return redirect()->refresh();

where , back() method means redirecting to the previous page, refresh() method means refreshing the current page.

In addition, we can also pass some data when redirecting. For example, the following code will pass a message variable when redirecting:

return redirect('dashboard')->with('message', '操作成功');

In the above code, the with() method means passing the data to the next request. In the next request, we can use the session() method to get the passed data, for example:

$message = session('message');

2. Laravel output page

In Laravel, we can Return the controller method to a view to output the page. View files are usually saved in the resources/views directory.

To return a view, we can use the following code:

return view('welcome');

In the above code, the view() method means creating a view response. This method receives a view name as a parameter. In actual use, we can also use the path with '.' symbols to specify the directory where the view file is located.

Data can also be passed in the view response. For example, the following code will pass a variable named 'title' in the view:

return view('welcome', ['title' => '欢迎来到我的网站']);

In the view, we can use {{ $title }} syntax to output the passed variables.

In addition to outputting static pages, we can also use the Blade template engine provided by Laravel in the view to dynamically generate HTML code. For example, the following code will output a table with traversed data:

<table>
    <tr>
        <th>ID</th>
        <th>姓名</th>
        <th>年龄</th>
    </tr>
    @foreach ($users as $user)
        <tr>
            <td>{{ $user->id }}</td>
            <td>{{ $user->name }}</td>
            <td>{{ $user->age }}</td>
        </tr>
    @endforeach
</table>

In the above code, @foreach and @endforeach represent a loop structure, {{ $user->id }} etc. represent each data item in the output loop.

3. Laravel jump output page

To sum up, it is very convenient to implement jump and output page in Laravel. In actual use, we can use them in combination, jump first, and then output the corresponding page. For example, the following code will first redirect and then output a view page with a message variable:

return redirect('dashboard')->with('message', '欢迎回来，管理员')->view('dashboard');

In the above code, the with() method passes the message variable to the next request , view() method represents the output view page.

4. Summary

This article introduces how to implement jump and output pages in Laravel. In actual use, we can combine them and use them flexibly to meet our own needs. Hope this article is helpful to readers.

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