Add display resource methods

app/dashboards/category_dashboard.rb

@@ -61,7 +61,7 @@ class CategoryDashboard < Administrate::BaseDashboard
   # Overwrite this method to customize how categories are displayed
   # across all pages of the admin dashboard.
   #
-  # def display_resource(category)
-  #   "Category ##{category.id}"
-  # end
+  def display_resource(category)
+    category.name
+  end
 end

app/dashboards/page_dashboard.rb

@@ -49,7 +49,7 @@ class PageDashboard < Administrate::BaseDashboard
   # Overwrite this method to customize how pages are displayed
   # across all pages of the admin dashboard.
   #
-  # def display_resource(page)
-  #   "Page ##{page.id}"
-  # end
+  def display_resource(page)
+    page.title
+  end
 end

app/dashboards/photo_dashboard.rb

@@ -75,7 +75,7 @@ class PhotoDashboard < Administrate::BaseDashboard
   # Overwrite this method to customize how photos are displayed
   # across all pages of the admin dashboard.
   #
-  # def display_resource(photo)
-  #   "Photo ##{photo.id}"
-  # end
+  def display_resource(photo)
+    photo.name
+  end
 end

app/dashboards/user_dashboard.rb

@@ -44,7 +44,7 @@ class UserDashboard < Administrate::BaseDashboard
   # Overwrite this method to customize how users are displayed
   # across all pages of the admin dashboard.
   #
-  # def display_resource(user)
-  #   "User ##{user.id}"
-  # end
+  def display_resource(user)
+    user.email
+  end
 end