Date.beginning_of_week thread local and beginning_of_week application config option added (default is Monday)

1 files changed, 9 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/railtie.rb b/activesupport/lib/active_support/railtie.rb
index aa8d408da9..29351db742 100644
--- a/activesupport/lib/active_support/railtie.rb
+++ b/activesupport/lib/active_support/railtie.rb
@@ -27,6 +27,15 @@ module ActiveSupport
       Time.zone_default = zone_default
     end
 
+    # Sets the default week start
+    # If assigned value is not a valid day symbol (e.g. :sunday, :monday, ...), an exception will be raised.
+    initializer "active_support.initialize_beginning_of_week" do |app|
+      require 'active_support/core_ext/date/calculations'
+      beginning_of_week_default = Date.find_beginning_of_week!(app.config.beginning_of_week)
+
+      Date.beginning_of_week_default = beginning_of_week_default
+    end
+
     initializer "active_support.set_configs" do |app|
       app.config.active_support.each do |k, v|
         k = "#{k}="