Set edit content when document doesn't exist

templates/main.html

@@ -35,7 +35,11 @@
             {% endif %}
         {% else %}
             <form method="POST" action="/{{ path }}">
-                <textarea id="markdown-textarea" name="text">{{ content }}</textarea>
+                {% set edit_content = content %}
+                {% if content is none %}
+                {% set edit_content = '# Title\n\nContent' %}
+                {% endif %}
+                <textarea id="markdown-textarea" name="text">{{ edit_content }}</textarea>
                 <input type="submit" value="Save"/>
             <form>
             <script>