ActiveRecord/ActiveModel '#validate' alias for 'valid?'

It's unintuitive to call '#valid?' when you want to run validations but
don't care about the return value.

The alias in ActiveRecord isn't strictly necessary (the ActiveModel
alias is still in effect), but it clarifies.

2 files changed, 13 insertions, 0 deletions

diff --git a/activemodel/lib/active_model/validations.rb b/activemodel/lib/active_model/validations.rb
index e9674d5143..cf97f45dba 100644
--- a/activemodel/lib/active_model/validations.rb
+++ b/activemodel/lib/active_model/validations.rb
@@ -285,6 +285,8 @@ module ActiveModel
     # Runs all the specified validations and returns +true+ if no errors were
     # added otherwise +false+.
     #
+    # Aliased as validate.
+    #
     #   class Person
     #     include ActiveModel::Validations
     #
@@ -319,6 +321,8 @@ module ActiveModel
       self.validation_context = current_context
     end
 
+    alias_method :validate, :valid?
+
     # Performs the opposite of <tt>valid?</tt>. Returns +true+ if errors were
     # added, +false+ otherwise.
     #
diff --git a/activemodel/test/cases/validations_test.rb b/activemodel/test/cases/validations_test.rb
index 4ea5670d32..6a74ee353d 100644
--- a/activemodel/test/cases/validations_test.rb
+++ b/activemodel/test/cases/validations_test.rb
@@ -295,6 +295,15 @@ class ValidationsTest < ActiveModel::TestCase
     assert auto.valid?
   end
 
+  def test_validate
+    auto = Automobile.new
+
+    assert_empty auto.errors
+
+    auto.validate
+    assert_not_empty auto.errors
+  end
+
   def test_strict_validation_in_validates
     Topic.validates :title, strict: true, presence: true
     assert_raises ActiveModel::StrictValidationFailed do