Added beginning_of_minute support to core_ext calculations for Time and DateTime

2 files changed, 27 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/core_ext/date_time/calculations.rb b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
index 1d3682eaf2..82cc46aa37 100644
--- a/activesupport/lib/active_support/core_ext/date_time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/date_time/calculations.rb
@@ -123,6 +123,18 @@ class DateTime
     change(:min => 59, :sec => 59)
   end
   alias :at_end_of_hour :end_of_hour
+  
+  # Returns a new DateTime representing the start of the hour (hh:mm:00).
+  def beginning_of_minute
+    change(:sec => 0)
+  end
+  alias :at_beginning_of_minute :beginning_of_minute
+
+  # Returns a new DateTime representing the end of the minute (hh:mm:59).
+  def end_of_minute
+    change(:sec => 59)
+  end
+  alias :at_end_of_minute :end_of_minute
 
   # Adjusts DateTime to UTC by adding its offset value; offset is set to 0.
   #
diff --git a/activesupport/lib/active_support/core_ext/time/calculations.rb b/activesupport/lib/active_support/core_ext/time/calculations.rb
index 1f95f62229..c18169fab5 100644
--- a/activesupport/lib/active_support/core_ext/time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/time/calculations.rb
@@ -188,6 +188,21 @@ class Time
   end
   alias :at_end_of_hour :end_of_hour
 
+  # Returns a new Time representing the start of the hour (x:xx:00)
+  def beginning_of_minute
+    change(:sec => 0)
+  end
+  alias :at_beginning_of_minute :beginning_of_minute
+
+  # Returns a new Time representing the end of the hour, x:59:59.999999 (.999999999 in ruby1.9)
+  def end_of_minute
+    change(
+      :sec => 59,
+      :usec => Rational(999999999, 1000)
+    )
+  end
+  alias :at_end_of_minute :end_of_minute
+
   # Returns a Range representing the whole day of the current time.
   def all_day
     beginning_of_day..end_of_day