reenable async commenting

lib/philomena_web/controllers/image/comment_controller.ex

@@ -53,9 +53,7 @@ defmodule PhilomenaWeb.Image.CommentController do
         Images.reindex_image(conn.assigns.image)
         UserStatistics.inc_stat(conn.assigns.current_user, :comments_posted)
 
-        conn
-        |> put_flash(:info, "Comment created successfully.")
-        |> redirect(to: Routes.image_path(conn, :show, image) <> "#comment_#{comment.id}")
+        index(conn, %{"comment_id" => comment.id})
 
       _error ->
         conn

lib/philomena_web/templates/image/comment/_form.html.slime

@@ -1,4 +1,6 @@
-= form_for @changeset, Routes.image_comment_path(@conn, :create, @image), fn f ->
+- options = if(assigns[:remote], do: [data: [remote: "true"], id: "js-comment-form"], else: [])
+
+= form_for @changeset, Routes.image_comment_path(@conn, :create, @image), options, fn f ->
   = if @changeset.action do
     .alert.alert-danger
       p Oops, something went wrong! Please check the errors below.

lib/philomena_web/templates/image/show.html.slime

@@ -19,7 +19,7 @@
       = render PhilomenaWeb.BanView, "_ban_reason.html", conn: @conn
 
     - @image.commenting_allowed ->
-      = render PhilomenaWeb.Image.CommentView, "_form.html", image: @image, changeset: @comment_changeset, conn: @conn
+      = render PhilomenaWeb.Image.CommentView, "_form.html", image: @image, changeset: @comment_changeset, remote: true, conn: @conn
 
     - true ->