Update persistence token before validations

app/models/concerns/authenticable.rb

@@ -24,13 +24,21 @@ module Authenticable
       }
     )
 
-    before_save :update_persistence_token
+    after_initialize do |u|
+      u.persistence_token ||= u.class.random_persistence_token
+    end
+
+    before_validation :update_persistence_token
   end
 
   module ClassMethods
     def find_and_authenticate_with_password(email, password)
       User.find_by(email:).try(:authenticate, password)
     end
+
+    def random_persistence_token
+      SecureRandom.hex(32)
+    end
   end
 
   def deactivated?
@@ -69,8 +77,8 @@ def verify_banned_until
   end
 
   def update_persistence_token
-    return unless !persistence_token || password_digest_changed?
+    return unless password_digest_changed?
 
-    self.persistence_token = SecureRandom.hex(32)
+    self.persistence_token = self.class.random_persistence_token
   end
 end

spec/models/concerns/authenticable_spec.rb

@@ -141,8 +141,7 @@
 
     context "when password is changed" do
       before do
-        user.password = user.password_confirmation = "new password"
-        user.save
+        user.update(password: "new password")
       end
 
       it { is_expected.not_to eq(previous_token) }