Only count posts visible to user

Author: ArtOfCode-

app/controllers/users_controller.rb

@@ -50,7 +50,15 @@ def show
     @posts = set_posts.user_sort({ term: params[:sort], default: :score },
                                  age: :created_at, score: :score)
 
-    @total_post_count = Post.all.by(@user).count
+    @total_post_count = if @user == current_user || current_user&.at_least_moderator?
+                          Post.all.by(@user).count
+                        else
+                          Post.all.by(@user)
+                              .undeleted
+                              .joins(:category)
+                              .where('categories.min_view_trust_level <= ?', current_user&.trust_level || 0)
+                              .count
+                        end
     @posts = @posts.first(@limit)
     render layout: 'without_sidebar'
   end

app/models/category.rb

@@ -72,7 +72,7 @@ def self.accessible_to(user)
     end
 
     trust_level = user&.trust_level || 0
-    Category.where('IFNULL(min_view_trust_level, -1) <= ?', trust_level)
+    Category.where('min_view_trust_level <= ?', trust_level)
   end
 
   # Gets category matching a given name