Delete `DateAndTime` method definition in rails that is compatible with ruby definition

Tests are also only on the `Time` class

Update doc forgetting to erase when moved

Update guide `Date` class to `Time` class and defined file

Update guide correction omission

2 files changed, 30 insertions, 30 deletions

diff --git a/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb b/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb
index e2e11545e2..c7a2378e41 100644
--- a/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/date_and_time/calculations.rb
@@ -20,21 +20,11 @@ module DateAndTime
       advance(days: -1)
     end
 
-    # Returns a new date/time the specified number of days ago.
-    def prev_day(days = 1)
-      advance(days: -days)
-    end
-
     # Returns a new date/time representing tomorrow.
     def tomorrow
       advance(days: 1)
     end
 
-    # Returns a new date/time the specified number of days in the future.
-    def next_day(days = 1)
-      advance(days: days)
-    end
-
     # Returns true if the date/time is today.
     def today?
       to_date == ::Date.current
@@ -198,21 +188,11 @@ module DateAndTime
       end
     end
 
-    # Returns a new date/time the specified number of months in the future.
-    def next_month(months = 1)
-      advance(months: months)
-    end
-
     # Short-hand for months_since(3)
     def next_quarter
       months_since(3)
     end
 
-    # Returns a new date/time the specified number of years in the future.
-    def next_year(years = 1)
-      advance(years: years)
-    end
-
     # Returns a new date/time representing the given day in the previous week.
     # Week is assumed to start on +start_day+, default is
     # +Date.beginning_of_week+ or +config.beginning_of_week+ when set.
@@ -233,11 +213,6 @@ module DateAndTime
     end
     alias_method :last_weekday, :prev_weekday
 
-    # Returns a new date/time the specified number of months ago.
-    def prev_month(months = 1)
-      advance(months: -months)
-    end
-
     # Short-hand for months_ago(1).
     def last_month
       months_ago(1)
@@ -249,11 +224,6 @@ module DateAndTime
     end
     alias_method :last_quarter, :prev_quarter
 
-    # Returns a new date/time the specified number of years ago.
-    def prev_year(years = 1)
-      advance(years: -years)
-    end
-
     # Short-hand for years_ago(1).
     def last_year
       years_ago(1)
diff --git a/activesupport/lib/active_support/core_ext/time/calculations.rb b/activesupport/lib/active_support/core_ext/time/calculations.rb
index f09a6271ad..eed34965e3 100644
--- a/activesupport/lib/active_support/core_ext/time/calculations.rb
+++ b/activesupport/lib/active_support/core_ext/time/calculations.rb
@@ -311,4 +311,34 @@ class Time
   end
   alias_method :eql_without_coercion, :eql?
   alias_method :eql?, :eql_with_coercion
+
+  # Returns a new time the specified number of days ago.
+  def prev_day(days = 1)
+    advance(days: -days)
+  end
+
+  # Returns a new time the specified number of days in the future.
+  def next_day(days = 1)
+    advance(days: days)
+  end
+
+  # Returns a new time the specified number of months ago.
+  def prev_month(months = 1)
+    advance(months: -months)
+  end
+
+  # Returns a new time the specified number of months in the future.
+  def next_month(months = 1)
+    advance(months: months)
+  end
+
+  # Returns a new time the specified number of years ago.
+  def prev_year(years = 1)
+    advance(years: -years)
+  end
+
+  # Returns a new time the specified number of years in the future.
+  def next_year(years = 1)
+    advance(years: years)
+  end
 end