Add resource loading plug

.gitignore

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+/_build
+/deps
+erl_crash.dump
+*.ez

README.md

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+Canary
+======
+
+** TODO: Add description **

config/config.exs

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+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+use Mix.Config
+
+# This configuration is loaded before any dependency and is restricted
+# to this project. If another project depends on this project, this
+# file won't be loaded nor affect the parent project. For this reason,
+# if you want to provide default values for your application for third-
+# party users, it should be done in your mix.exs file.
+
+# Sample configuration:
+#
+#     config :logger, :console,
+#       level: :info,
+#       format: "$date $time [$level] $metadata$message\n",
+#       metadata: [:user_id]
+
+# It is also possible to import configuration files, relative to this
+# directory. For example, you can emulate configuration per environment
+# by uncommenting the line below and defining dev.exs, test.exs and such.
+# Configuration from the imported file will override the ones defined
+# here (which is why it is important to import them last).
+#
+#     import_config "#{Mix.env}.exs"

lib/canary.ex

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+defmodule Canary.LoadResource do
+
+  def init(options) do
+    options
+  end
+
+  def call(conn, opts) do
+    conn
+    |> load_resource(opts[:resource])
+  end
+
+  @doc """
+  Load the resource given by conn.params["id"] and
+  add it to conn.assigns.
+  """
+  def load_resource(conn, resource) do
+    fetched_resource = resource
+    |> fetch_resource(conn.params["id"])
+
+    %{ conn | assigns: Map.put(conn.assigns, :fetched_resource, fetched_resource) }
+  end
+
+  @doc """
+  Fetch the resource from the database. Initially only supports ecto.
+  Need a place to define which repo to use
+  """
+  def fetch_resource(resource, resource_id) do
+    Cooking.Repo.get(resource, resource_id)
+  end
+end

mix.exs

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+defmodule Asd.Mixfile do
+  use Mix.Project
+
+  def project do
+    [app: :canary,
+     version: "0.0.1",
+     elixir: "~> 1.0",
+     build_embedded: Mix.env == :prod,
+     start_permanent: Mix.env == :prod,
+     deps: deps]
+  end
+
+  # Configuration for the OTP application
+  #
+  # Type `mix help compile.app` for more information
+  def application do
+    [applications: [:logger]]
+  end
+
+  defp deps do
+    [
+     { :ecto, "~> 0.10.0" },
+     { :canada, "~> 1.0.0" },
+     { :plug, "~> 0.12.0" }
+    ]
+  end
+end

mix.lock

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+%{"canada": {:hex, :canada, "1.0.0"},
+  "decimal": {:hex, :decimal, "1.1.0"},
+  "ecto": {:hex, :ecto, "0.10.2"},
+  "plug": {:hex, :plug, "0.12.1"},
+  "poolboy": {:hex, :poolboy, "1.4.2"}}

test/canary_test.exs

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+defmodule CanaryTest do
+  use ExUnit.Case
+
+  test "the truth" do
+    assert 1 + 1 == 2
+  end
+end

test/test_helper.exs

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+ExUnit.start()