June 2023
Intermediate to advanced
274 pages
5h 17m
English
Content preview from Build Your Own Web Framework in Elixir
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4
Working with Controllers
In the previous chapter, we learned how to use the Plug package to simplify a pipeline of operations that are applied to an HTTP connection, represented by the %Plug.Conn{} struct. We also learned how we can leverage the Plug.Router plug to handle a request matching an HTTP method and path. In this chapter, we will take our Plug knowledge to the next level by applying the same philosophy (of updating a connection struct in a pipeline) to implement a controller. We will also take a quick look at how Phoenix implements its controllers and take inspiration from that to build our own controllers. Before doing any of that, however, we will learn what controllers are in a Model-View-Controller (MVC) framework and understand ...
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