Track feed latest refresh time

lib/changelog/schema/feed.ex

@@ -57,6 +57,12 @@ defmodule Changelog.Feed do
   def preload_owner(query = %Ecto.Query{}), do: Ecto.Query.preload(query, :owner)
   def preload_owner(feed), do: Repo.preload(feed, :owner)
 
+  def refresh!(feed) do
+    # using update_all to avoid auto `updated_at` change
+    query = from(q in __MODULE__, where: q.id == ^feed.id)
+    Repo.update_all(query, set: [refreshed_at: now_in_seconds()])
+  end
+
   def starts_on_time(%{starts_on: nil}), do: nil
 
   def starts_on_time(%{starts_on: date}) do

lib/changelog_web/feeds.ex

@@ -10,6 +10,7 @@ defmodule ChangelogWeb.Feeds do
   def refresh(feed = %Feed{slug: slug}) do
     content = generate(feed)
     upload(content, slug)
+    Feed.refresh!(feed)
     notify_services(feed)
 
     :ok

lib/changelog_web/templates/admin/feed/_table.html.heex

@@ -4,6 +4,7 @@
       <th>Owner</th>
       <th>Cover</th>
       <th>Name</th>
+      <th>Refreshed at</th>
       <th>Starts on</th>
       <th>Podcasts</th>
       <th></th>
@@ -32,6 +33,7 @@
         <span class="ui tiny green basic label">auto</span>
       <% end %>
       </td>
+      <td><%= AdminHelpers.ts(feed.refreshed_at) %></td>
       <td><%= TimeView.hacker_date(feed.starts_on) %></td>
       <td class="ui mini images">
       <%= for podcast <- @podcasts do %>