Implement ayufan validator

app/models/ci/pipeline_schedule.rb

@@ -15,11 +15,7 @@ module Ci
     validates :cron_timezone, cron_timezone: true, presence: { unless: :importing? }
     validates :ref, presence: { unless: :importing? }
     validates :description, presence: true
-    validates :variables, uniqueness_of_in_memory: {
-                :collection => :variables,
-                :attrs => [:pipeline_schedule_id, :key],
-                :message => ['variables.key', 'keys are duplicated']
-              }
+    validates :variables, variable_duplicates: true
 
     before_save :set_next_run_at
 

app/validators/uniqueness_of_in_memory_validator.rb

-# UniquenessOfInMemoryValidator
-#
-# This validtor is designed for especially the following condition
-# - Use `accepts_nested_attributes_for :xxx` in a parent model
-# - Use `validates :xxx, uniqueness: { scope: :xxx_id }` in a child model
-#
-# Inspired by https://stackoverflow.com/a/2883129/2522666
-module ActiveRecord
-  class Base
-    # Validate that the the objects in +collection+ are unique
-    # when compared against all their non-blank +attrs+. If not
-    # add +message+ to the base errors.
-    def validate_uniqueness_of_in_memory(collection, attrs, message)
-      hashes = collection.inject({}) do |hash, record|
-        key = attrs.map { |a| record.send(a).to_s }.join
-        if key.blank? || record.marked_for_destruction?
-          key = record.object_id
-        end
-        hash[key] = record unless hash[key]
-        hash
-      end
-
-      if collection.length > hashes.length
-        self.errors.add(*message)
-      end
-    end
-  end
-end
-
-class UniquenessOfInMemoryValidator < ActiveModel::Validator
-  def validate(record)
-    record.validate_uniqueness_of_in_memory(
-      record.public_send(options[:collection]),
-      options[:attrs],
-      options[:message])
-  end
-end

spec/controllers/projects/pipeline_schedules_controller_spec.rb

@@ -171,7 +171,7 @@ describe Projects::PipelineSchedulesController do
             .to change { Ci::PipelineSchedule.count }.by(0)
             .and change { Ci::PipelineScheduleVariable.count }.by(0)
 
-          expect(assigns(:schedule).errors['variables.key']).not_to be_empty
+          expect(assigns(:schedule).errors['variables']).not_to be_empty
         end
       end
     end
@@ -269,7 +269,7 @@ describe Projects::PipelineSchedulesController do
           it 'returns an error that variables are duplciated' do
             go
 
-            expect(assigns(:schedule).errors['variables.key']).not_to be_empty
+            expect(assigns(:schedule).errors['variables']).not_to be_empty
           end
         end
       end