[bug] unable to create training credit

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Support for internet explorer 11
 - Fix a bug: events order in public list
+- Fix a bug: unable to create a training credit
 - Corrected typos in documentation (#96)
 
 ## v2.6.1 2017 December 14

app/models/credit.rb

@@ -4,5 +4,9 @@ class Credit < ActiveRecord::Base
   has_many :users_credits, dependent: :destroy
 
   validates :creditable_id, uniqueness: { scope: [:creditable_type, :plan_id] }
-  validates :hours, numericality: { greater_than_or_equal_to: 0 }
+  validates :hours, numericality: { greater_than_or_equal_to: 0 }, if: :is_not_training_credit?
+
+  def is_not_training_credit?
+    not (creditable_type === 'Training')
+  end
 end

test/integration/credits/training_test.rb

@@ -0,0 +1,23 @@
+require 'test/unit'
+
+class TrainingTest < Test::Unit::TestCase
+
+  # Called before every test method runs. Can be used
+  # to set up fixture information.
+  def setup
+    # Do nothing
+  end
+
+  # Called after every test method runs. Can be used to tear
+  # down fixture information.
+
+  def teardown
+    # Do nothing
+  end
+
+  # Fake test
+  def test_fail
+
+    fail('Not implemented')
+  end
+end