add render method

lib/DB/IdrisPost.rakumod

@@ -16,3 +16,9 @@ has Bool:D $.idris = True;
 method title(--> Str:D) {
        markdown-title($!source)
 }
+
+# Use katla to highlight our file, mangle the resulting output, and then pass it
+# through to pandoc for html generation
+method render-html(--> Str:D) {
+    die "Not implemented";
+}

lib/DB/MarkdownPost.rakumod

@@ -15,3 +15,8 @@ has Bool:D $.markdown = True;
 method title(--> Str:D) {
     markdown-title($!source)
 }
+
+# Simply provide our source file to pandoc
+method render-html(--> Str:D) {
+    die "Not implemented";
+}

lib/DB/PlaceholderPost.rakumod

@@ -12,6 +12,9 @@ unit class PlaceholderPost does Post is json(:pretty);
 #| cheaty way
 has Bool:D $.placeholder = True;
 
+#| An optional body for the placeholder post
+has Str $.body;
+
 method title(--> Str:D) {
     "Placeholder Article"
 }
@@ -30,3 +33,8 @@ method empty(--> PlaceholderPost:D) {
 method all-slugs(--> Array[Str:D]) {
     Array[Str:D].new
 }
+
+# Return the body if there is one, the empty string if there isn't one
+method render-html(--> Str:D) {
+    $!body // ''
+}

lib/DB/Post.rakumod

@@ -50,3 +50,6 @@ method all-slugs(--> Array[Str:D]) {
     @slugs.push($long-title-slug);
     @slugs;
 }
+
+#| Render this post to an html body
+method render-html(--> Str:D) {...}