MD renderer drops python markdown

- Instead of sending the HTML rendered by python
  markdown, MD renderer passes the WB download URL
  directly to the template.
- Direct-to-wb replaces through-renderer as the
  new dispatch type.

Author: cslzchen

mfr/extensions/md/render.py

@@ -1,20 +1,11 @@
 import os
 
-import markdown
-from markdown.extensions import Extension
-
 from mako.lookup import TemplateLookup
 
-from mfr.core import extension
-
-
-class EscapeHtml(Extension):
-    def extendMarkdown(self, md, md_globals):
-        del md.preprocessors['html_block']
-        del md.inlinePatterns['html']
+from mfr.core.extension import BaseRenderer
 
 
-class MdRenderer(extension.BaseRenderer):
+class MdRenderer(BaseRenderer):
 
     TEMPLATE = TemplateLookup(
         directories=[
@@ -23,13 +14,10 @@ class MdRenderer(extension.BaseRenderer):
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        self.metrics.add('markdown_version', markdown.version)
 
     def render(self):
         """Render a markdown file to html."""
-        with open(self.file_path, 'r') as fp:
-            body = markdown.markdown(fp.read(), extensions=[EscapeHtml()])
-            return self.TEMPLATE.render(base=self.assets_url, body=body)
+        return self.TEMPLATE.render(base=self.assets_url, url=self.metadata.download_url)
 
     @property
     def file_required(self):