fix: handle missing category translations gracefully

app/helpers/categories_helper.rb

@@ -1,6 +1,6 @@
 module CategoriesHelper
   def all_categories
-    @all_categories ||= Category.all.sort_by { |a| a.name.downcase }
+    @all_categories ||= Category.all.sort_by { |a| a.display_name.downcase }
   end
 
   def categories_for_select

app/models/category.rb

@@ -3,7 +3,16 @@ class Category < ApplicationRecord
 
   translates :name
 
+  def display_name
+    return name if name.present?
+
+    fallback_locale, fallback_name = name_translations&.find { |_, v| v.present? }
+    return "#{fallback_name} [#{fallback_locale}]" if fallback_name.present?
+
+    self.class.model_name.human
+  end
+
   def to_s
-    name
+    display_name
   end
 end

app/views/shared/_post_filters.html.erb

@@ -19,7 +19,7 @@
     <ul class="nav navbar-nav d-none d-sm-flex">
       <li class="dropdown nav-item">
         <a class="dropdown-toggle nav-link text-primary" href="#" data-bs-toggle="dropdown" role="button" aria-expanded="false">
-          <%= @category ? @category.name : Category.model_name.human %>
+          <%= @category ? @category.display_name : Category.model_name.human %>
         </a>
         <ul class="dropdown-menu" role="menu">
           <li>
@@ -30,7 +30,7 @@
             <li>
               <%= link_to "#{base_path}?cat=#{c.id}", class: "dropdown-item" do %>
                 <%= category_icon(c) %>
-                <%= c.name %>
+                <%= c.display_name %>
               <% end %>
             </li>
           <% end %>

app/views/shared/_show_filter_hint.html.erb

@@ -1,7 +1,7 @@
 <% if @category.present? %>
   <small>
     <%= glyph :category %>
-    <%= @category.name %>
+    <%= @category.display_name %>
   </small>
 <% end %>
 <% if params[:q].present? %>