Add Bypass Template Rendering as a phoenix til

README.md

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 warrant a full blog post. These are mostly things I learn by pairing with
 smart people at [Hashrocket](http://hashrocket.com/).
 
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 ### Phoenix
 
+- [Bypass Template Rendering](phoenix/bypass-template-rendering.md)
 - [Render A Template To A String](phoenix/render-a-template-to-a-string.md)
 
 ### PostgreSQL

phoenix/bypass-template-rendering.md

@@ -0,0 +1,32 @@
+# Bypass Template Rendering
+
+Generally when rendering a response to a request in a Phoenix app, the
+controller will make a render call that targets a specific template. If it
+suits our needs, we can skip writing a template and bypass the template
+portion of the response pipeline by implementing our own `render` function
+directly in the view module.
+
+Consider the following route and controller action:
+
+```elixir
+# web/router.ex
+get "/hello", UserController, :hello
+
+# web/controllers/user_controller.ex
+def hello(conn, _params) do
+  render(conn, "hello.html")
+end
+```
+
+The render call would normally trigger a corresponding template function,
+but we bypass it by adding the following function to our view module:
+
+```elixir
+# web/views/user_view.ex
+def render("hello.html", _assigns) do
+  "Hello, World!"
+end
+```
+
+Visiting `/hello` will render a page with the view's layout and the words
+"Hello, World!".