Add a dropdown for selecting a specific version

plugins/filters.rb

@@ -70,6 +70,17 @@ module Jekyll
     def canonical_url(input)
       full_url(input).sub(/index\.\w+$/i, '')
     end
+
+    # Sort an array of semvers
+    def semver_sort(input)
+      input.sort_by { |v|
+        val = v['name']
+        if val == "pre 0.7"
+          val = "0.6"
+        end
+        Gem::Version.new(val)
+      }
+    end
   end
 end
 

source/components/index.html

@@ -26,6 +26,7 @@ regenerate: false
 {%- endfor -%}
 
 {%- assign components = site.components | sort: 'title' -%}
+{%- assign components_by_version = site.components | group_by: 'ha_release' | semver_sort | reverse -%}
 {%- assign categories = components | map: 'ha_category' | join: ',' | join: ',' | split: ',' | uniq | sort -%}
 {%- capture current_version -%}{{ site.current_major_version }}.{{ site.current_minor_version }}{% endcapture -%}
 {%- assign added_one_ago_minor_version = site.current_minor_version|minus: 1 -%}
@@ -48,7 +49,11 @@ Support for these components is provided by the Home Assistant community.
       <a href='#version/{{ current_version }}' class="btn added_in_current_version">Added in {{ current_version }} ({{ current_version_components_count }})</a>
       <a href='#version/{{ added_one_ago_version }}' class="btn added_one_version_ago">Added in {{ added_one_ago_version }} ({{ one_ago_version_components_count }})</a>
       <a href='#version/{{ added_two_ago_version }}' class="btn added_two_versions_ago">Added in {{ added_two_ago_version }} ({{ two_ago_version_components_count }})</a>
-
+      Added in <select name="versions">
+        {%- for version in components_by_version -%}
+          <option value="#version/{{ version.name }}">{{ version.name }} ({{ version.items | size }})
+        {%- endfor -%}
+      </select>
 {%- for category in categories -%}
   {%- assign components_count = components | where: 'ha_category', category | size -%}
   {%- if category and category != 'Other' and components_count != 0 -%}