add external id (assignable user flag)

Author: mwvolo

app/models/user.rb

@@ -243,6 +243,10 @@ def is_test?
     !!is_test
   end
 
+  def has_external_id?
+    external_ids.exists?
+  end
+
   def is_anonymous?
     false
   end

app/views/layouts/_posthog.html.erb

@@ -34,6 +34,7 @@
             title_1_school: <%= current_user&.title_1_school || false %>,
             country_code: "<%= current_user&.country_code %>",
             is_administrator: <%= current_user&.is_administrator || false %>,
+            has_external_id: <%= current_user&.has_external_id? || false %>,
           },
           {
             uuid: "<%= current_user&.uuid %>",

lib/ox_posthog.rb

@@ -40,6 +40,7 @@ def self.log(user, event, extra_props = {})
           country_code: user.country_code,
           receive_newsletter: user.receive_newsletter,
           is_administrator: user.is_administrator,
+          has_external_id: user.has_external_id?,
         },
         '$set_once': {
           uuid: user.uuid,

spec/lib/posthog_spec.rb

@@ -73,11 +73,10 @@
               is_sheerid_verified: true,
               which_books: 'Biology',
               how_many_students: '100-200',
-              title_1_school: false,
-              grant_tutor_access: true,
               country_code: 'US',
               receive_newsletter: true,
               is_administrator: user.is_administrator,
+              has_external_id: false,
             )
           )
         )