Fix UserDashboard id field type after UUID migration

backend/app/controllers/application_controller.rb

@@ -2,4 +2,10 @@
 
 class ApplicationController < ActionController::Base
   before_action :set_paper_trail_whodunnit
+
+  def after_sign_in_path_for(resource)
+    return admin_root_path if resource.is_a?(User) && resource.admin?
+
+    super
+  end
 end

backend/app/dashboards/user_dashboard.rb

@@ -10,7 +10,7 @@ class UserDashboard < Administrate::BaseDashboard
   # which determines how the attribute is displayed
   # on pages throughout the dashboard.
   ATTRIBUTE_TYPES = {
-    id: Field::Number,
+    id: Field::String,
     admin: Field::Boolean,
     email: Field::String,
     password: Field::String,

backend/spec/requests/sessions_spec.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe "Sessions" do
+  describe "POST /users/sign_in" do
+    let(:password) { "password" }
+
+    context "when the user is an admin" do
+      let(:user) { create(:user, admin: true, password: password) }
+
+      before do
+        post user_session_path, params: { user: { email: user.email, password: password } }
+      end
+
+      it { expect(response).to redirect_to(admin_root_path) }
+    end
+
+    context "when the user is not an admin" do
+      let(:user) { create(:user, password: password) }
+
+      before do
+        post user_session_path, params: { user: { email: user.email, password: password } }
+      end
+
+      it { expect(response).not_to redirect_to(admin_root_path) }
+    end
+  end
+end