Throughout the Laravel documentation, you will see examples of code that interacts with Laravel's features via "facades". Facades provide a "static" interface to classes that are available in the application's service container. Laravel ships with many facades which provide access to almost all of Laravel's features.

Laravel facades serve as "static proxies" to underlying classes in the service container, providing the benefit of a terse, expressive syntax while maintaining more testability and flexibility than traditional static methods. It's perfectly fine if you don't totally understand how facades work - just go with the flow and continue learning about Laravel.


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To complement facades, Laravel offers a variety of global "helper functions" that make it even easier to interact with common Laravel features. Some of the common helper functions you may interact with are view, response, url, config, and more. Each helper function offered by Laravel is documented with their corresponding feature; however, a complete list is available within the dedicated helper documentation.

For example, instead of using the Illuminate\Support\Facades\Response facade to generate a JSON response, we may simply use the response function. Because helper functions are globally available, you do not need to import any classes in order to use them:

However, some care must be taken when using facades. The primary danger of facades is class "scope creep". Since facades are so easy to use and do not require injection, it can be easy to let your classes continue to grow and use many facades in a single class. Using dependency injection, this potential is mitigated by the visual feedback a large constructor gives you that your class is growing too large. So, when using facades, pay special attention to the size of your class so that its scope of responsibility stays narrow. If your class is getting too large, consider splitting it into multiple smaller classes.

Typically, it would not be possible to mock or stub a truly static class method. However, since facades use dynamic methods to proxy method calls to objects resolved from the service container, we actually can test facades just as we would test an injected class instance. For example, given the following route:

In addition to facades, Laravel includes a variety of "helper" functions which can perform common tasks like generating views, firing events, dispatching jobs, or sending HTTP responses. Many of these helper functions perform the same function as a corresponding facade. For example, this facade call and helper call are equivalent:

There is absolutely no practical difference between facades and helper functions. When using helper functions, you may still test them exactly as you would the corresponding facade. For example, given the following route:

The cache helper is going to call the get method on the class underlying the Cache facade. So, even though we are using the helper function, we can write the following test to verify that the method was called with the argument we expected:

In a Laravel application, a facade is a class that provides access to an object from the container. The machinery that makes this work is in the Facade class. Laravel's facades, and any custom facades you create, will extend the base Illuminate\Support\Facades\Facade class.

The Facade base class makes use of the __callStatic() magic-method to defer calls from your facade to an object resolved from the container. In the example below, a call is made to the Laravel cache system. By glancing at this code, one might assume that the static get method is being called on the Cache class:

Notice that near the top of the file we are "importing" the Cache facade. This facade serves as a proxy for accessing the underlying implementation of the Illuminate\Contracts\Cache\Factory interface. Any calls we make using the facade will be passed to the underlying instance of Laravel's cache service.

Instead, the Cache facade extends the base Facade class and defines the method getFacadeAccessor(). This method's job is to return the name of a service container binding. When a user references any static method on the Cache facade, Laravel resolves the cache binding from the service container and runs the requested method (in this case, get) against that object.

Using real-time facades, you may treat any class in your application as if it was a facade. To illustrate how this can be used, let's first examine some code that does not use real-time facades. For example, let's assume our Podcast model has a publish method. However, in order to publish the podcast, we need to inject a Publisher instance:

Injecting a publisher implementation into the method allows us to easily test the method in isolation since we can mock the injected publisher. However, it requires us to always pass a publisher instance each time we call the publish method. Using real-time facades, we can maintain the same testability while not being required to explicitly pass a Publisher instance. To generate a real-time facade, prefix the namespace of the imported class with Facades:

When the real-time facade is used, the publisher implementation will be resolved out of the service container using the portion of the interface or class name that appears after the Facades prefix. When testing, we can use Laravel's built-in facade testing helpers to mock this method call:

Below you will find every facade and its underlying class. This is a useful tool for quickly digging into the API documentation for a given facade root. The service container binding key is also included where applicable.

Years later, I now have played Faade, and have only become more fascinated by how it works. Additionally, I have since began researching computer science and looking into concepts such as artificial intelligence and game design. Digital experiences like Faade, and the future that lies before them, is the place where all these interests intersect.

So to answer your question, a facade pattern makes sense when complex libraries are involved, meaning it cant be a substitute to creating a business logic, it's an abstraction of it. If you choose to use a single class for the whole layer, it will have all those responsibilities in a single class, which is not what the facade pattern is after.

I looked at the Laravel 4.2 documentation - thats the version Im using - and also the api reference but I couldn't find anything that would explain how to someone who didn't know in advance how to find the "real" class to a facade.

My question is, knowing that the "facaded classes" you use in your app dont necessarily have a the same name or some convention to help you search the filesystem, how can someone - who doesn't know in advance what the underlying class is - find the underlying class for a laravel facade?

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Faade received contemporary praise from mainstream publications as an example of the burgeoning potential of artificial intelligence in the design of video games.[7] Describing the title as "the future of videogames...where games are driven as strongly by characters as combat", the New York Times praised the game's use of "advanced artificial intelligence techniques...to change (the characters') emotional state in fairly complicated ways".[8] Newsweek praised the game's potential to "take character to a new depth" and design games "about people's lives" that would appeal to broader audiences, including women.[9] NBC News suggested Faade "could represent a new step in gaming" to "evoke complex emotions" in interactive entertainment,[10] and noted that "how (the game) attempts to meet the challenges of artificial intelligence has relevance for gaming in the future".[11] Describing the game as "one of the most important games ever created, possibly the most important game of the last ten years", Game Developer praised the "revolutionary" and "technically ambitious" design of the game, noting its innovative experimentation with natural language processing and generation, emotional modelling, facial expressions and body language, stating "Faade is important for what it tries to do and what it shows that we can do with this amazing medium".[12]

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There are countless adventure games where you can roam around the environment freely. In that respect, we have games that make an environment seem real. But, role playing games still have aways to go where the characters seem real. This is where Facade succeeds greatly. I believe this game opens the door for other game designers. There needs to be more games where the characters are the focus and players truly feel that interaction with them is unlimited.

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