diff --git a/.gitignore b/.gitignore
index bfdbea8d14..a41b5216ca 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,7 @@
 /tmp/*
 /spec/example_app/tmp/*
 pkg
+*.ipr
+*.iml
+*.iws
+.idea
diff --git a/docs/customizing_dashboards.md b/docs/customizing_dashboards.md
index c23e88a4d2..e4299376c4 100644
--- a/docs/customizing_dashboards.md
+++ b/docs/customizing_dashboards.md
@@ -157,3 +157,16 @@ end
 ````
 
 [define your own]: /adding_custom_field_types
+
+## Customizing Actions
+
+To enable or disable certain actions you could override `valid_action?` method in your dashboard controller like this:
+
+```ruby
+# disable 'edit' and 'destroy' links
+def valid_action?(name, resource = resource_class)
+  %w[edit destroy].exclude?(name.to_s) && super
+end
+```
+
+Action is one of `new`, `edit`, `show`, `destroy`.