keep inserted_at value to the original value

.travis.yml

@@ -0,0 +1,20 @@
+language: elixir
+elixir:
+  - 1.7
+otp_release:
+  - 20.2.4
+env:
+  - MIX_ENV=test
+cache:
+  directories:
+    - _build
+    - deps
+services:
+  - postgresql
+env:
+  global:
+    - MIX_ENV=test
+before_script:
+  - mix do ecto.create, ecto.migrate
+script:
+  - mix test

lib/alog.ex

@@ -129,7 +129,7 @@ defmodule Alog do
           from(
             m in __MODULE__,
             where: m.entry_id == ^entry_id,
-            order_by: [desc: :inserted_at],
+            order_by: [desc: :updated_at],
             limit: 1,
             select: m
           )
@@ -179,7 +179,7 @@ defmodule Alog do
                   end
                 end)
               end).()
-          |> order_by([m], desc: m.inserted_at)
+          |> order_by([m], desc: m.updated_at)
           |> distinct([m], m.entry_id)
           |> select([m], m)
 
@@ -209,7 +209,6 @@ defmodule Alog do
               |> Map.get(:data)
               |> @repo.preload(__MODULE__.__schema__(:associations))
               |> Map.put(:id, nil)
-              |> Map.put(:inserted_at, nil)
               |> Map.put(:updated_at, nil)
 
             changeset
@@ -251,7 +250,7 @@ defmodule Alog do
         sub =
           from(m in __MODULE__,
             distinct: m.entry_id,
-            order_by: [desc: :inserted_at],
+            order_by: [desc: :updated_at],
             select: m
           )
 
@@ -346,7 +345,7 @@ defmodule Alog do
         sub =
           from(mod in Map.get(module.__schema__(:association, assoc), :queryable),
             distinct: mod.entry_id,
-            order_by: [desc: :inserted_at],
+            order_by: [desc: :updated_at],
             select: mod
           )
 

mix.exs

@@ -4,7 +4,7 @@ defmodule Alog.MixProject do
   def project do
     [
       app: :alog,
-      version: "0.4.2",
+      version: "0.4.3",
       elixir: "~> 1.7",
       elixirc_paths: elixirc_paths(Mix.env()),
       start_permanent: Mix.env() == :prod,

test/all_test.exs

@@ -18,5 +18,14 @@ defmodule AlogTest.AllTest do
 
       assert length(User.all()) == 2
     end
+
+    test "all return inserted_at original value" do
+      {:ok, user} = %User{} |> User.changeset(Helpers.user_3_params()) |> User.insert()
+      {:ok, user_updated} = user |> User.changeset(%{postcode: "W2 3EC"}) |> User.update()
+
+      [user_all] = User.all()
+      assert user_all.inserted_at == user.inserted_at
+      assert user_all.postcode == user_updated.postcode
+    end
   end
 end

test/get_by_test.exs

@@ -38,7 +38,7 @@ defmodule AlogTest.GetByTest do
 
     test "does not retrieve outdated results" do
       {:ok, user} = %User{} |> User.changeset(Helpers.user_1_params()) |> User.insert()
-      {:ok, updated_user} = user |> User.changeset(%{postcode: "EC3 RST"}) |> User.update()
+      {:ok, _updated_user} = user |> User.changeset(%{postcode: "EC3 RST"}) |> User.update()
 
       assert User.get_by(postcode: "E2 0SY") == nil
     end
@@ -58,7 +58,7 @@ defmodule AlogTest.GetByTest do
         |> User.changeset(Map.put(Helpers.user_2_params(), :postcode, "E2 0SY"))
         |> User.insert()
 
-      {:ok, updated_user_2} = user_2 |> User.changeset(%{postcode: "EC3 RST"}) |> User.update()
+      {:ok, _} = user_2 |> User.changeset(%{postcode: "EC3 RST"}) |> User.update()
 
       assert User.get_by(postcode: "E2 0SY") == user
     end

test/support/helpers.ex

@@ -6,6 +6,8 @@ defmodule Alog.TestApp.Helpers do
 
   def user_2_params(), do: %{name: "Loki", username: "mschfmkr", postcode: "E1 6DR"}
 
+  def user_3_params(), do: %{name: "Bob", username: "bobuser", postcode: "E1 7DR"}
+
   def seed_data() do
     {:ok, item_type} = %ItemType{} |> ItemType.changeset(%{type: "Weapon"}) |> ItemType.insert()