prepare

app/helpers/admin/application_helper.rb

@@ -60,6 +60,12 @@ module Admin::ApplicationHelper
                 form: form.options.dig(:html, :id)
   end
 
+  def prepare_for_github(html)
+    sanitize  html.to_s,
+              tags: %w(table a figure img figcaption i em b strong h2 h3 h4 h5 h6 blockquote),
+              attributes: %w(href alt title target rel src srcset)
+  end
+
   private
 
   def polymorphic_url_param(object_or_class, **options)

app/models/communication/website/post.rb

@@ -58,6 +58,7 @@ class Communication::Website::Post < ApplicationRecord
   end
 
   def publish_to_github
+    return if published_at.nil?
     github.publish  kind: :posts,
                     file: github_file,
                     title: to_s,

app/services/github.rb

@@ -15,6 +15,7 @@ class Github
     local_path = "#{ local_directory }/#{ file }"
     Pathname(local_path).dirname.mkpath
     File.write local_path, data
+    return if repository.blank?
     remote_file = "_#{ kind }/#{ file }"
     begin
       content = client.content repository, path: remote_file
@@ -23,7 +24,6 @@ class Github
       sha = nil
     end
     commit_message ||= "[#{kind}] Save #{ title }"
-    return if repository.blank?
     client.create_contents  repository,
                             remote_file,
                             commit_message,

app/views/admin/communication/website/pages/jekyll.html.erb

@@ -3,6 +3,6 @@ title: "<%= @page.title %>"
 permalink: "<%= @page.path %>"
 parent: "<%= @page.parent_id %>"
 description: "<%= @page.description %>"
-text: "<%= @page.text %>"
+text: "<%= prepare_for_github @page.text %>"
 ---
 <%= @page.content_without_frontmatter.html_safe %>

app/views/admin/communication/website/posts/jekyll.html.erb

@@ -3,6 +3,6 @@ title: "<%= @post.title %>"
 date: <%= @post.published_at %> UTC
 slug: "<%= @post.slug %>"
 description: "<%= @post.description %>"
-text: "<%= @post.text %>"
+text: "<%= prepare_for_github @post.text %>"
 ---
 <%= @post.content_without_frontmatter.html_safe %>

app/views/admin/communication/website/posts/show.html.erb

@@ -29,6 +29,10 @@
             <td width="150"><%= Communication::Website::Page.human_attribute_name('slug') %></td>
             <td><%= @post.slug %></td>
           </tr>
+          <tr>
+            <td><%= Communication::Website::Page.human_attribute_name('published_at') %></td>
+            <td><%= l @post.published_at, format: :long %></td>
+          </tr>
           <tr>
             <td><%= Communication::Website::Page.human_attribute_name('published') %></td>
             <td><%= t @post.published %></td>