2 files changed, 10 insertions, 1 deletions
diff --git a/activemodel/lib/active_model/errors.rb b/activemodel/lib/active_model/errors.rb
index ef6141a51d..ea69e7549e 100644
--- a/activemodel/lib/active_model/errors.rb
+++ b/activemodel/lib/active_model/errors.rb
@@ -160,6 +160,15 @@ module ActiveModel
     #
     #   person.errors[:name]  # => ["cannot be nil"]
     #   person.errors['name'] # => ["cannot be nil"]
+    #
+    # Note that, if you try to get errors of an attribute which has
+    # no errors associated with it, this method will instantiate
+    # an empty error list for it and +keys+ will return an array
+    # of error keys which includes this attribute.
+    #
+    #   person.errors.keys    # => []
+    #   person.errors[:name]  # => []
+    #   person.errors.keys    # => [:name]
     def [](attribute)
       messages[attribute.to_sym]
     end
diff --git a/activemodel/lib/active_model/gem_version.rb b/activemodel/lib/active_model/gem_version.rb
index 4563f860c3..94514a0657 100644
--- a/activemodel/lib/active_model/gem_version.rb
+++ b/activemodel/lib/active_model/gem_version.rb
@@ -8,7 +8,7 @@ module ActiveModel
     MAJOR = 5
     MINOR = 0
     TINY  = 0
-    PRE   = "beta1.1"
+    PRE   = "beta2"
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
   end