Older versions of the standard should not be indexed

iati_standard/models.py

@@ -1,6 +1,7 @@
 """Model definitions for the iati_standard app."""
 
 import os
+import re
 from bs4 import BeautifulSoup
 from datetime import datetime
 
@@ -397,10 +398,19 @@ def save(self, *args, **kwargs):
 
 
 class ActivityStandardPage(AbstractGithubPage):
-    """A model for the Activity Standard Page, an IATI reference page."""
+    """A model for the Activity Standard Page, an IATI reference page.
+
+    Used for Standard reference pages like /en/iati-standard/202/
+    And guidance developer pages like /en/guidance/developer/
+    """
 
     template = 'iati_standard/activity_standard_page.html'
 
+    def is_older_version_of_standard(self):
+        """Is it an older version of the standard. Return Boolean."""
+        url = self.get_url()
+        return re.match(r"^\/\w+\/iati-standard\/\d", url) and not re.match(r"^\/\w+\/iati-standard\/203\/", url)
+
 
 class StandardGuidancePage(AbstractGithubPage):
     """A model for the Standard Guidance Page, an IATI reference page."""

iati_standard/templates/iati_standard/activity_standard_page.html

@@ -23,6 +23,10 @@
 </style>
 {% endblock %}
 
+{% block html_header_seo %}
+{% if page.is_older_version_of_standard %}<meta name="robots" content="noindex">{% endif %}
+{% endblock %}
+
 {% block content %}
     {% get_current_language as LANGUAGE_CODE %}
     <div class="hero hero--minor">