bbs_controller.ex

defmodule PhoenixBbs.BbsController do
  use PhoenixBbs.Web, :controller

  plug :action

  def index(conn, _params) do
    docs = Mongo.connect!
           |> Mongo.db("phoenix_bbs")
           |> Mongo.Db.collection("comments")
           |> Mongo.Collection.find
           |> Enum.to_list

    render conn, "bbs.html", comments: docs
  end

  def create(conn, params) do
    collection = Mongo.connect! |> Mongo.db("phoenix_bbs") |> Mongo.Db.collection("comments")

    %{name: params["name"],
      title: params["title"],
      comment: params["comment"]
     } |> Mongo.Collection.insert_one!(collection)

    redirect conn, to: "/bbs"
  end
end