enhance staging mode in order to show errors and web_console

Gemfile

@@ -42,7 +42,7 @@ gem 'd3-rails'
 gem 'rest-client'
 gem 'rubyzip'
 
-group :development do
+group :development, :staging do
   gem 'better_errors', platform: :ruby
   gem 'binding_of_caller', platform: :ruby
   gem 'capistrano', '~> 3.3.0'
@@ -56,7 +56,7 @@ group :development do
   gem 'web-console', '~> 2.0', platform: :ruby
 end
 
-group :development, :test do
+group :development, :test, :staging do
   gem 'byebug', platform: :ruby
   gem 'spring'
 end

config/environments/staging.rb

@@ -10,9 +10,12 @@ Rails.application.configure do
   # Rake tasks automatically ignore this option for performance.
   config.eager_load = true
 
-  # Full error reports are disabled and caching is turned on.
-  config.consider_all_requests_local       = false
-  config.action_controller.perform_caching = true
+  #enable web console in staging
+  config.web_console.development_only = false
+
+  # Show full error reports and disable caching.
+  config.consider_all_requests_local       = true
+  config.action_controller.perform_caching = false
 
   # Enable Rack::Cache to put a simple HTTP cache in front of your application
   # Add `rack-cache` to your Gemfile before enabling this.