Added database data structures for processing and validating database table updates

lib/sukaato/comment.ex

@@ -0,0 +1,23 @@
+defmodule Sukaato.Comment do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  schema "comments" do
+    field :slug, :string
+    field :tripcode, :string
+    field :content, :string
+    field :ledit, :utc_datetime
+    field :post_id, :id
+    field :reply_to, :id
+
+    timestamps(type: :utc_datetime)
+  end
+
+  @doc false
+  def changeset(comment, attrs) do
+    comment
+    |> cast(attrs, [:slug, :tripcode, :content, :ledit])
+    |> validate_required([:slug, :tripcode, :content, :ledit])
+    |> unique_constraint(:tripcode)
+  end
+end