Consistent custom dashboards

app/helpers/administrate/application_helper.rb

@@ -26,7 +26,7 @@ def dashboard_from_resource(resource_name)
 
     def model_from_resource(resource_name)
       dashboard = dashboard_from_resource(resource_name)
-      dashboard.try(:model) || resource_name.to_sym
+      dashboard.try(:model) || resource_name.singularize.to_sym
     end
 
     def display_resource_name(resource_name, opts = {})

docs/adding_controllers_without_related_model.md

@@ -6,16 +6,15 @@ Sometimes you may want to add a custom controller that has no resource
 related to it (for example for a statistics page).
 
 To do that, you must define an `index` route, as only controllers with index
-routes are displayed in the sidebar and then add a custom dashboard:
+routes are displayed in the sidebar, and then add a custom dashboard:
 
 ```erb
-# app/views/admin/stats/index.html.erb 
+# app/views/admin/stats/index.html.erb
 
-<div style="padding: 20px">
+<div>
   <h1>Stats</h1>
   <br>
   <p><b>Total Customers:</b> <%= @stats[:customer_count] %></p>
-  <br>
   <p><b>Total Orders:</b> <%= @stats[:order_count] %></p>
 </div>
 ```
@@ -25,7 +24,7 @@ routes are displayed in the sidebar and then add a custom dashboard:
 require "administrate/custom_dashboard"
 
 class StatDashboard < Administrate::CustomDashboard
-  resource "Stats" # used by administrate in the views
+  resource "Stat" # used by administrate in the views
 end
 ```
 

lib/administrate/custom_dashboard.rb

@@ -4,11 +4,11 @@ class CustomDashboard
 
     class << self
       def resource_name(_opts)
-        named_resource.pluralize.titleize
+        @named_resource.pluralize.titleize
       end
 
       def resource(resource_name)
-        define_singleton_method(:named_resource) { resource_name }
+        @named_resource = resource_name
       end
     end
   end

spec/example_app/app/dashboards/stat_dashboard.rb

@@ -1,5 +1,5 @@
 require "administrate/custom_dashboard"
 
 class StatDashboard < Administrate::CustomDashboard
-  resource "Stats"
+  resource "Stat"
 end

spec/example_app/app/policies/stat_policy.rb

@@ -0,0 +1,2 @@
+class StatPolicy < ApplicationPolicy
+end

spec/example_app/app/views/admin/stats/index.html.erb

@@ -1,7 +1,6 @@
 <div style="padding: 20px">
   <h1>Stats</h1>
   <br>
-  <p><b>Total Customers:</b> <%= @stats[:customer_count] %></h1>
-  <br>
-  <p><b>Total Orders:</b> <%= @stats[:order_count] %></h1>
+  <p><b>Total Customers:</b> <%= @stats[:customer_count] %></p>
+  <p><b>Total Orders:</b> <%= @stats[:order_count] %></p>
 </div>