Update decent exposure to 3.0 (#468)

* Update decent exposure to 3.0
* Remove unused flash messages in controller scaffold

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- Upgrade [decent exposure](https://github.com/hashrocket/decent_exposure) to 3.0
 - Email previews for `DeviseMailer` at http://lvh.me:5000/rails/mailers
 - Upgrade [rails](https://github.com/rails/rails) to 4.2.7.1
 - Update foundation to 6 version

Gemfile.lock

@@ -94,9 +94,10 @@ GEM
     database_cleaner (1.3.0)
     debug_inspector (0.0.2)
     debugger-linecache (1.2.0)
-    decent_decoration (0.0.6)
-      decent_exposure (>= 2.0)
-    decent_exposure (2.3.1)
+    decent_decoration (0.1.0)
+      decent_exposure (~> 3.0)
+    decent_exposure (3.0.0)
+      activesupport (>= 4.0)
     devise (3.5.4)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)

app/controllers/application_controller.rb

@@ -6,8 +6,4 @@ class ApplicationController < ActionController::Base
 
   responders :flash
   respond_to :html
-
-  decent_configuration do
-    strategy DecentExposure::StrongParametersStrategy
-  end
 end

lib/templates/rails/scaffold_controller/controller.rb

@@ -2,16 +2,16 @@
 class <%= controller_class_name %>Controller < ApplicationController
   respond_to :html
 
-  expose(:<%= singular_table_name %>, attributes: :<%= singular_table_name %>_params)
-  expose(:<%= plural_table_name %>) { <%= class_name %>.page(params[:page]) }
+  expose :<%= singular_table_name %>
+  expose :<%= plural_table_name %>, -> { <%= class_name %>.page(params[:page]) }
 
   def create
-    flash[:notice] = '<%= human_name %> was successfully created.' if <%= singular_table_name %>.save
+    <%= singular_table_name %>.save
     respond_with(<%= singular_table_name %>)
   end
 
   def update
-    flash[:notice] = '<%= human_name %> was successfully updated.' if <%= singular_table_name %>.save
+    <%= singular_table_name %>.update_attributes(<%= singular_table_name %>_params)
     respond_with(<%= singular_table_name %>)
   end