It’s basically the same as a generator but a little more flexible. This is then cloned as a start point for further app development. Many times I’ve seen GitHub repos with pre-generated applications with some basic functionality. Let’s take the example of a basic application skeleton. The easiest way to explain stack inheritance is perhaps with an example. All the features above are inherited along with the stack class. When you inherit a stack, you’re really inheriting a full application. The true power of a Pancake stack is that it is fully inheritable. Stacks bundle these behaviors together into a cohesive unit. Inheritable Templating System (see below).Path Management with multiple roots (makes working with gem stacks transparent).Pancake provides a whole bunch of functionality as mixins. They’re also designed to be gemmed and used as libraries or full applications.Ĭlass MyStack :session).use(Warden::Manager, #.) It’s trivially easy to mount one stack inside another, or just mount any valid rack application inside your stack. Stacks can be combined and also put inside Pancake.Ĭombined into a Pancake application it may look like this:. The general form of a stack is as follows:Įach stack has its own router, middleware stack and application endpoint. If you’re not familiar with what makes a valid Rack application it basically comes down to an object that receives the “call” method with exactly one argument, the environment hash, and returns an array with exactly 3 elements. The stack will accept any valid Rack application as the endpoint. A stack provides a whole bunch of behavior for you including a router and middleware stack. While Rack provides the low level framework for building web applications on, Pancake provides a stack as a place to start your application. This README is a very high level overview only and doesn’t really cover a great deal of Pancake unfortunately. Almost all key aspects of web frameworks are covered in Pancake as mixins to help you create your own re-usable Rack Stacks without worrying about the really low level plumbing. It provides very useful helpers on top of Rack that assist in constructing Rack stacks as mixins. Pancake addresses this by making Rack the fundamental building block of an application. All the major frameworks use it, although many of the application frameworks and their middlewares are not really re-usable away from their specific implementations yet. Rack has come up in the Ruby web world as the framework that matters when developing web applications. Pancake is primarily a tool for making rack applications. Pancake helps you construct clean, modular, re-usable code to create your web masterpieces. However, making each of these components interact and work cohesively is difficult and time consuming. Modern web applications often need to be constructed by interacting with numerous independent service/applications, each optimised for a specific task.
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