"Hello, World" example

.editorconfig

@@ -0,0 +1,12 @@
+# editorconfig.org
+# from https://devhints.io/editorconfig
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+tab_width = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

README.md

@@ -1,20 +1,70 @@
 # Hello
 
-To start your Phoenix app:
+To start your Phoenix server:
 
   * Install dependencies with `mix deps.get`
-  * Create and migrate your database with `mix ecto.create && mix ecto.migrate`
-  * Install Node.js dependencies with `npm install`
-  * Start Phoenix endpoint with `mix phoenix.server`
+  * Create and migrate your database with `mix ecto.setup`
+  * Install Node.js dependencies with `npm install` inside the `assets` directory
+  * Start Phoenix endpoint with `mix phx.server`
 
 Now you can visit [`localhost:4000`](http://localhost:4000) from your browser.
 
-Ready to run in production? Please [check our deployment guides](http://www.phoenixframework.org/docs/deployment).
+Ready to run in production? Please [check our deployment guides](https://hexdocs.pm/phoenix/deployment.html).
 
 ## Learn more
 
-  * Official website: http://www.phoenixframework.org/
-  * Guides: http://phoenixframework.org/docs/overview
+  * Official website: https://www.phoenixframework.org/
+  * Guides: https://hexdocs.pm/phoenix/overview.html
   * Docs: https://hexdocs.pm/phoenix
-  * Mailing list: http://groups.google.com/group/phoenix-talk
+  * Forum: https://elixirforum.com/c/phoenix-forum
   * Source: https://github.com/phoenixframework/phoenix
+
+## Phoenix Diagram
+
+A simplified view of a Phoenix Web Application
+
+```
+connection
+|> endpoint
+|> router
+|> pipelines  # typically one for browser requests, another for json/api requests
+|> controller
+```
+
+Controller as pipe chain of functions
+
+```
+connection
+|> controller
+|> common_services
+|> action
+```
+
+```
+connection   # Plug.Conn
+|> endpoint  # lib/hello/endpoint.ex
+|> browser   # web/router.ex
+|> HelloController.world  # web/controllers/hello_controller.ex
+|> HelloView.render(  # web/views/hello_view.ex
+  "world.html")  # web/templates/hello/world.html.eex
+```
+
+> Plugs are functions. Your web applications are pipelines of plugs.
+
+## Commands
+
+initial setup
+
+```bash
+$ mix phoenix.new . --app hello
+$ mix ecto.create
+$ mix phoenix.server
+```
+
+## Editor
+
+![](./editor.png)
+
+## Browser
+
+![](./browser.png)

notes.md

@@ -63,3 +63,10 @@ $ dc up
 ```
 
 visit <http://localhost:4000/>
+
+open interactive elixir (iex) and load the `mix phoenix.server` script
+
+```bash
+$ dc run app \
+    iex -S mix phoenix.server
+```

web/controllers/hello_controller.ex

@@ -0,0 +1,7 @@
+defmodule Hello.HelloController do
+  use Hello.Web, :controller
+
+  def world(conn, %{"name" => name}) do
+    render conn, "world.html", name: name
+  end
+end

web/router.ex

@@ -16,6 +16,7 @@ defmodule Hello.Router do
   scope "/", Hello do
     pipe_through :browser # Use the default browser stack
 
+    get "/hello/:name", HelloController, :world
     get "/", PageController, :index
   end
 

web/templates/hello/world.html.eex

@@ -0,0 +1,4 @@
+<h1>
+  From template: Hello, 
+  <%= String.capitalize(@name) %>!
+</h1>

web/views/hello_view.ex

@@ -0,0 +1,3 @@
+defmodule Hello.HelloView do
+  use Hello.Web, :view
+end