Fix comments table references

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

priv/repo/migrations/20181108165151_fix_comments_references.exs

@@ -0,0 +1,26 @@
+defmodule Mobilizon.Repo.Migrations.FixCommentsReferences do
+  @moduledoc """
+  For some reason these fields references were all wrong.
+  """
+  use Ecto.Migration
+
+  def up do
+    drop constraint(:comments, "comments_in_reply_to_comment_id_fkey")
+    drop constraint(:comments, "comments_origin_comment_id_fkey")
+
+    alter table(:comments) do
+      modify :in_reply_to_comment_id, references(:comments, on_delete: :nothing)
+      modify :origin_comment_id, references(:comments, on_delete: :nothing)
+    end
+  end
+
+  def down do
+    drop constraint(:comments, "comments_in_reply_to_comment_id_fkey")
+    drop constraint(:comments, "comments_origin_comment_id_fkey")
+
+    alter table(:comments) do
+      modify :in_reply_to_comment_id, references(:categories, on_delete: :nothing)
+      modify :origin_comment_id, references(:addresses, on_delete: :delete_all)
+    end
+  end
+end