From fbcfbc0417189eec217a9bd8c6689ddf06ea8f19 Mon Sep 17 00:00:00 2001
From: Matthew Somerville <matthew@mysociety.org>
Date: Wed, 9 Jul 2025 09:53:56 +0100
Subject: [PATCH] Label non-current boundaries in HTML.

---
 mapit/templates/mapit/area.html | 7 +++++--
 mapit/views/areas.py            | 3 +++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/mapit/templates/mapit/area.html b/mapit/templates/mapit/area.html
index d0f7a77c..3cc4df94 100644
--- a/mapit/templates/mapit/area.html
+++ b/mapit/templates/mapit/area.html
@@ -9,8 +9,11 @@
     <header class="area_info">
         <h2>{{ area.name }} <em class="area_id">ID {{ area.id }}</em></h2>
         <ul>
-            <li>{%trans "Type" %}: <a href="{% url "mapit_index" %}areas/{{ area.type.code }}.html">{{ area.type.description }}</a> <small>({{ area.type.code }})</small></li>
-            <li>{%trans "Exists in generations" %}: {{ area.generation_low.id }}&ndash;{{ area.generation_high.id }}</li>
+            <li>{% trans "Type" %}: <a href="{% url "mapit_index" %}areas/{{ area.type.code }}.html">{{ area.type.description }}</a> <small>({{ area.type.code }})</small></li>
+            <li>{% if area.generation_high_id < active_generation_id %}
+                    <em>{% trans "Historic boundary" %}.</em>
+                {% endif %}
+                {% trans "Exists in generations" %}: {{ area.generation_low.id }}&ndash;{{ area.generation_high.id }}.</li>
             <li>{% trans "Country" %}: {{ area.list_countries|join:", "|default:"-" }}</li>
             {% if area.parent_area %}
             {% with area.parent_area.id|slugify as area_id %}
diff --git a/mapit/views/areas.py b/mapit/views/areas.py
index b4549fb5..da229867 100644
--- a/mapit/views/areas.py
+++ b/mapit/views/areas.py
@@ -142,8 +142,11 @@ def area(request, area_id, format=''):
     if hasattr(countries, 'restrict_geo_html'):
         geotype = countries.restrict_geo_html(area)
 
+    active_generation = Generation.objects.current()
+
     if format == 'html':
         return render(request, 'mapit/area.html', {
+            'active_generation': active_generation,
             'area': area,
             'codes': codes,
             'alternative_names': alternative_names,