Using reusable button with no further config needed on all posts

Author: donovanh

_includes/post.njk

@@ -0,0 +1,10 @@
+---
+layout: default.njk
+templateClass: tmpl-post
+---
+
+{{ content | safe }}
+
+<h3>Ready to mark {{title}} as completed?</h3>
+
+<button onClick="toggleCompletedTopic('{{page.url}}')" data-topic="{{page.url}}" class="completed-button">Mark as completed</button>

control-flow/index.md

@@ -1,10 +1,6 @@
 ---
-layout: default.njk
+layout: post.njk
 title: Control Flow
 ---
 
-<button onClick="toggleCompletedTopic('{{page.url}}')" data-topic="{{page.url}}" class="completed-button">Mark as completed</button>
-
 I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhäuser Gate. All those moments will be lost in time, like control flow.
-
-<button onClick="toggleCompletedTopic('{{page.url}}')" data-topic="{{page.url}}" class="completed-button">Mark as completed</button>

events/index.md

@@ -1,5 +1,5 @@
 ---
-layout: default.njk
+layout: post.njk
 title: Events
 url: events
 ---