Improve the browse helper code use to generate wiki links

app/helpers/browse_helper.rb

@@ -16,41 +16,34 @@ module BrowseHelper
     return name
   end
 
-  def wiki_link(type, key, tag)
-    wiki_data = YAML.load_file("#{RAILS_ROOT}/config/wiki-tag-and-key-description.yml")
-    my_locale = I18n.locale.to_s
-
-    if type == "key"
-      ret = key
-      lookup = key
+  def format_key(key)
+    if url = wiki_link("key", key)
+      link_to h(key), url, :title => t('browse.tag_details.wiki_link.key', :key => key)
     else
-      ret = tag
-      lookup = key + "=" + tag
+      h(key)
     end
-
-    # Try our native language
-    has_primary = wiki_data[my_locale][type][lookup] rescue false
-    if has_primary
-      ret = wikify(type, key, tag, lookup, wiki_data[my_locale][type][lookup])
-    else
-      # Fall back on English
-      has_fallback = wiki_data["en"][type][lookup] rescue false
-      if has_fallback
-        ret = wikify(type, key, tag, lookup, wiki_data["en"][type][lookup])
-      end
-    end
-
-    return ret
   end
 
-  def wikify(type, key, tag, text, wiki)
-    my_locale = I18n.locale
-    url = "http://wiki.openstreetmap.org/wiki/#{wiki}?uselang=#{my_locale}"
-    
-    if type == "key"
-      return '<a href="' + url + '" title="' + h(t('browse.tag_details.wiki_link.key', :key => key)) + '">' + h(text) + '</a>'
+  def format_value(key, value)
+    if url = wiki_link("tag", "#{key}=#{value}")
+      link_to h(value), url, :title => t('browse.tag_details.wiki_link.tag', :key => key, :value => value)
     else
-      return '<a href="' + url + '" title="' + h(t('browse.tag_details.wiki_link.tag', :key => key, :value => tag)) + '">' + h(tag) + '</a>'
+      linkify h(value)
     end
   end
+
+private
+
+  def wiki_link(type, lookup)
+    wiki_data = YAML.load_file("#{RAILS_ROOT}/config/wiki-tag-and-key-description.yml")
+    locale = I18n.locale.to_s
+
+    if page = wiki_data[locale][type][lookup] rescue nil
+      url = "http://wiki.openstreetmap.org/wiki/#{page}?uselang=#{locale}"
+    elsif page = wiki_data["en"][type][lookup] rescue nil
+      url = "http://wiki.openstreetmap.org/wiki/#{page}?uselang=#{locale}"
+    end
+
+    return url
+  end
 end