Laravel系列2入门使用

最好的教程是官方文档！

homestead安装好，就可以使用了。

安装Laravel

composer create-project --prefer-dist laravel/laravel blog

) <!-- Form Error List --> <div class="alert alert-danger"> <strong>Whoops! Something went wrong!</strong> <br><br> <ul> @foreach ($errors->all() as $error) <li>{{ $error }}</li> @endforeach </ul> </div> @endif

测试错误输出：

将输入数据取不合要求的格式即可。

这个错误格式只有include它的view才能显示:@include('common.errors')

Adding Tasks

检验输入数据：如少于255个字符

如果校验失败，将重定向用户到/目录

->withErrors($validator)  will flash the errors from the given validator instance into the session so that they can be accessed via the $errors variable in our view.

Creating The Task

To create the task, we may use the save method after creating and setting properties on a new Eloquent model:

$task = new Task;

$task->name = $request->name;

$task->save();

现在的样子：

Displaying Existing Tasks

we need to edit our / route to pass all of the existing tasks to the view.

The view function accepts a second argument which is an array of data that will be made available to the view, where each key in the array will become a 变量 within the view:

Deleting Tasks

Adding The Delete Button

When the button is clicked, a DELETE /task request will be sent to the application:

Note that the delete button's form method is listed as POST, even though we are responding to the request using a Route::delete route.

HTML forms only allow the GET and POST HTTP verbs, so we need a way to spoof a DELETE request from the form.

We can spoof a DELETE request by outputting the results of the method_field('DELETE') function within our form. This function generates a hidden form input that Laravel recognizes and will use to override the actual HTTP request method. The generated field will look like the following:

<input type="hidden" name="_method" value="DELETE">

We can use implicit model binding to automatically retrieve the Task model that corresponds to the {task} route parameter.

Route::delete('/task/{task}', function (Task $task) { $task->delete(); return redirect('/'); });

效果：