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HomePHP FrameworkLaravelDetailed explanation of the deletion operation of Laravel resource routing

Laravel is a powerful PHP framework with a wide range of applications in the field of web development. Among them, resource routing is one of the very important concepts in Laravel, which can help us quickly build RESTful APIs. In the process of using resource routing, deletion operations are very common, so this article mainly introduces the deletion operation of Laravel resource routing.

1. Introduction to resource routing

In Laravel, resource routing can be defined through the Route::resource method. This method will automatically define seven commonly used routing operation methods, namely: index, create, store, show, edit, update and destroy.

For example, we can define a simple resource route through the following code:

Route::resource('posts', 'PostController');

In this way, Laravel will automatically generate /posts, /posts/create, /posts/{post}, /posts/{post}/edit and other seven routes.

2. Delete operation

In resource routing, the delete operation corresponds to the destroy method. When the user clicks the delete button in the web application, we need to construct a DELETE request, and Laravel will call the destroy method to complete the operation.

  1. Define route

We need to define a route for the destroy method, for example:

Route::delete('posts/{post}', 'PostController@destroy')->name('posts.destroy');

This route will match DELETE requests and /posts/{post } path and forward the request to the destroy method of PostController.

  1. Controller method

In the controller, we need to get the entity object corresponding to the delete operation and call the delete method to delete it from the database. For example:

public function destroy($id)
{
    $post = Post::find($id);
    $post->delete();
    return redirect()->route('posts.index');
}

Here, we first use the Post::find method to find the entity object to be deleted, and then use the delete method to delete it from the database. Finally, we use the redirect method to redirect the user to the posts list page.

  1. HTML Form

In the HTML form, we need to generate a form for the delete button and add a hidden field _method to it to indicate that this is a DELETE ask.

For example, we can use the following code to generate a delete button:


id) }}" method="POST">     {{ csrf_field() }}     {{ method_field('DELETE') }}     

Here, we use the route method to generate the /posts/{post} path with parameters, and set the method attribute of the form to DELETE. We then use the csrf_field method to generate the CSRF token and the method_field method to generate the _method field.

  1. Named routing

Finally, when defining the route, we can set a named route name posts.destroy for the destroy method. This name can help us more easily generate the URL and redirect to the page after the deletion operation is completed.

For example, we can use the following code to generate a redirect response:

return redirect()->route('posts.index');

Here, we use the route method and pass in the posts.index parameter to generate the posts.index path, thereby redirecting the user Directed to the posts list page.

3. Summary

Through the above steps, we can easily implement the deletion operation of resource routing in Laravel. When the user clicks the delete button in the web application, Laravel will construct a DELETE request and call the controller's destroy method to complete the deletion. Using named routes makes it easier to generate URLs and redirect responses.

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