1 files changed, 3 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/string/conversions.rb b/activesupport/lib/active_support/core_ext/string/conversions.rb
index 4cc36147f8..6a243fe982 100644
--- a/activesupport/lib/active_support/core_ext/string/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/string/conversions.rb
@@ -30,16 +30,19 @@ class String
 
   # Form can be either :utc (default) or :local.
   def to_time(form = :utc)
+    return nil if self.blank?
     d = ::Date._parse(self, false).values_at(:year, :mon, :mday, :hour, :min, :sec, :sec_fraction).map { |arg| arg || 0 }
     d[6] *= 1000000
     ::Time.send("#{form}_time", *d)
   end
 
   def to_date
+    return nil if self.blank?
     ::Date.new(*::Date._parse(self, false).values_at(:year, :mon, :mday))
   end
 
   def to_datetime
+    return nil if self.blank?
     d = ::Date._parse(self, false).values_at(:year, :mon, :mday, :hour, :min, :sec, :zone, :sec_fraction).map { |arg| arg || 0 }
     d[5] += d.pop
     ::DateTime.civil(*d)