Merge pull request #29 from epochtalk/board-slugs

feat: implement slugs for boards table

Author: akinsey

lib/epoch/board.ex

@@ -4,6 +4,7 @@ defmodule Epoch.Board do
   @primary_key {:id, :binary_id, autogenerate: true}
   schema "boards" do
     field :name, :string
+    field :slug, :string
     field :description, :string
     field :post_count, :integer
     field :thread_count, :integer

priv/repo/migrations/20200821000641_board_slugs.exs

@@ -0,0 +1,34 @@
+defmodule Epoch.Repo.Migrations.BoardSlugs do
+  use Ecto.Migration
+  import Ecto.Query
+
+  def up do
+    # add slug column
+    alter table(:boards) do
+      add :slug, :string, size: 100
+    end
+
+    #index
+    create unique_index(:boards, [:slug])
+
+    # flush so query populating slug will work
+    flush()
+
+    # update existing boards, set slug = id
+    from(b in "boards",
+      update: [set: [slug: b.id]],
+      where: true)
+    |> Epoch.Repo.update_all([])
+
+    # modify boards after slug update, don't allow null
+    alter table(:boards) do
+      modify :slug, :string, size: 100, null: false
+    end
+  end
+
+  def down do
+    alter table(:boards) do
+      remove :slug
+    end
+  end
+end

test/epoch_test.exs

@@ -5,6 +5,7 @@ defmodule EpochTest do
   def create_board(name \\ "Testing Board") do
     %Epoch.Board{
       name: name,
+      slug: :crypto.strong_rand_bytes(5) |> Base.url_encode64 |> binary_part(0, 5),
       description: "Testing grounds for discussion",
       created_at: NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second),
       updated_at: NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second)

test/epoch_test/post_test.exs

@@ -5,6 +5,7 @@ defmodule EpochTest.PostTest do
   test "post" do
     b = %Epoch.Board{
       name: "Testing Board",
+      slug: :crypto.strong_rand_bytes(5) |> Base.url_encode64 |> binary_part(0, 5),
       description: "Testing grounds for discussion",
       created_at: NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second),
       updated_at: NaiveDateTime.truncate(NaiveDateTime.utc_now(), :second)