fix user page when user is not logged in

app/helpers/users_helper.rb

 module UsersHelper
 
   def current_user_page?(user)
-    current_user.id == user.id
+    return current_user.id == user.id if user_signed_in?
+    false
   end
 
   def learning_objects_number(learning_objects)
@@ -23,4 +24,4 @@ module UsersHelper
     render "users/user_horizontal", user: user
   end
 
-end
\ No newline at end of file
+end

app/views/follows/_button.html.erb

-<% follow_text = current_user.following?(followable) ? 'Deixar de seguir' : 'Seguir' %>
-<%= link_to follow_text, follow_user_path(id: current_user.id, followable_type: followable.class.name, followable_id: followable.id), method: :post, remote: true, class: 'btn btn-default follow-button' %>
+<% if user_signed_in? %>
+  <% follow_text = current_user.following?(followable) ? 'Deixar de seguir' : 'Seguir' %>
+  <%= link_to follow_text, follow_user_path(id: current_user.id, followable_type: followable.class.name, followable_id: followable.id), method: :post, remote: true, class: 'btn btn-default follow-button' %>
+<% end %>

app/views/users/_header.html.erb

@@ -2,7 +2,7 @@
   <div class="col-md-6">
     <div class="media">
       <div class="media-left">
-        <% if current_user.id == user.id and current_user.provider == "email" %>
+        <% if user_signed_in? && current_user.id == user.id && current_user.provider == "email" %>
             <%= link_to edit_user_registration_path do
               image_tag user.avatar.url(:thumb), class: 'user-image'
             end %>