Laravel加载并初始化自定义帮助程序类

Question

There are many questions regarding loading custom helper classes in Laravel. However, none of them focus on the loading them with proper initialization.

As of Laravel version 5.3 we can use psr-4 autoloading which is autoloading the entire app/ directory. However, classes are loading but never initialized.

I have my helper class inside the app/helpers/support.php . This class has a constructor, where I want to load some important configuration in order to make the helper usable.

So how can I load my helper but ALSO initialize it properly in Laravel? Right now I am simply working-around the problem by using new \\App\\Helper\\Support(); inside AppServiceProvider.php .

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Edit: I'm using the following approach to maintain my helper class:

Best practices for custom helpers on Laravel 5

Answer 1

It seems like what you have is a service. Rather than creating an instance, you can declare it in your app service provider and inject it as a dependency when you need it.

In your register method:

$this->app->bind(\App\Helper\Support::class);

You can now use dependency injection to get an instance of your class. You can also make an instance like this:

app()->make(\App\Helper\Support::class);

If you only want one instance to exist at any given time, use singleton rather than bind .

I recommend reading the service container documentation:

https://laravel.com/docs/5.5/container