diff --git a/.rubocop.yml b/.rubocop.yml
index aa4331e..9fbdc59 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -2,62 +2,47 @@ require: rubocop-rspec
 
 inherit_from: .rubocop_todo.yml
 
-AllCops:
-  Exclude:
-    - generators/rating/templates/**/*
-
 Rails:
   Enabled: true
 
-Lint/Debugger:
+Layout/AlignParameters:
+  EnforcedStyle: with_fixed_indentation
+
+Layout/EmptyLinesAroundArguments:
   Enabled: false
 
-Metrics/AbcSize:
+Rails/ApplicationRecord:
   Enabled: false
 
-Metrics/ClassLength:
+RSpec/DescribeMethod:
   Enabled: false
 
-Metrics/CyclomaticComplexity:
+RSpec/ExampleLength:
+  Max: 10
+
+RSpec/FilePath:
   Enabled: false
 
+RSpec/MultipleExpectations:
+  Enabled: false
+
+RSpec/NestedGroups:
+  Max: 5
+
 Metrics/LineLength:
-  Enabled: false
+  Max: 120
 
-Metrics/MethodLength:
-  Enabled: false
-
-Metrics/PerceivedComplexity:
-  Enabled: false
-
-Rails/HasAndBelongsToMany:
-  Enabled: false
-
-Rails/HttpPositionalArguments:
-  Enabled: false
-
-Style/IfUnlessModifier:
-  MaxLineLength: 0
-
-Style/PercentLiteralDelimiters:
-  PreferredDelimiters:
-    '%i': '[]'
-    '%I': '[]'
-    '%r': ()
-    '%w': '[]'
-    '%W': '[]'
-
-Style/AlignParameters:
-  EnforcedStyle: with_fixed_indentation
+Naming/VariableNumber:
+  EnforcedStyle: snake_case
 
 Style/Documentation:
   Enabled: false
 
-Style/Encoding:
-  Enabled: false
-
-Style/SpaceBeforeComma:
-  Enabled: false
-
-Style/SpaceBeforeFirstArg:
-  Enabled: false
+Style/PercentLiteralDelimiters:
+  PreferredDelimiters:
+    '%': '()'
+    '%i': '[]'
+    '%I': '[]'
+    '%r': '()'
+    '%w': '[]'
+    '%W': '[]'
diff --git a/lib/generators/rating/templates/db/migrate/create_rating_tables.rb b/lib/generators/rating/templates/db/migrate/create_rating_tables.rb
index c38e582..af1ac28 100644
--- a/lib/generators/rating/templates/db/migrate/create_rating_tables.rb
+++ b/lib/generators/rating/templates/db/migrate/create_rating_tables.rb
@@ -5,9 +5,9 @@ class CreateRatingTables < ActiveRecord::Migration[5.0]
     create_table :rating_rates do |t|
       t.decimal :value, default: 0, precision: 17, scale: 14
 
-      t.references :author   , index: true, null: false, polymorphic: true
-      t.references :resource , index: true, null: false, polymorphic: true
-      t.references :scopeable, index: true, null: true , polymorphic: true
+      t.references :author,    index: true, null: false, polymorphic: true
+      t.references :resource,  index: true, null: false, polymorphic: true
+      t.references :scopeable, index: true, null: true, polymorphic: true
 
       t.timestamps null: false
     end
@@ -17,13 +17,13 @@ class CreateRatingTables < ActiveRecord::Migration[5.0]
       unique: true
 
     create_table :rating_ratings do |t|
-      t.decimal :average , default: 0, mull: false, precision: 17, scale: 14
+      t.decimal :average,  default: 0, mull: false, precision: 17, scale: 14
       t.decimal :estimate, default: 0, mull: false, precision: 17, scale: 14
-      t.integer :sum     , default: 0, mull: false
-      t.integer :total   , default: 0, mull: false
+      t.integer :sum,      default: 0, mull: false
+      t.integer :total,    default: 0, mull: false
 
-      t.references :resource , index: true, null: false, polymorphic: true
-      t.references :scopeable, index: true, null: true , polymorphic: true
+      t.references :resource,  index: true, null: false, polymorphic: true
+      t.references :scopeable, index: true, null: true,  polymorphic: true
 
       t.timestamps null: false
     end
diff --git a/lib/rating/models/rating/rate.rb b/lib/rating/models/rating/rate.rb
index 877c35d..c78792f 100644
--- a/lib/rating/models/rating/rate.rb
+++ b/lib/rating/models/rating/rate.rb
@@ -6,8 +6,8 @@ module Rating
 
     after_save :update_rating
 
-    belongs_to :author   , polymorphic: true
-    belongs_to :resource , polymorphic: true
+    belongs_to :author,    polymorphic: true
+    belongs_to :resource,  polymorphic: true
     belongs_to :scopeable, polymorphic: true
 
     validates :author, :resource, :value, presence: true
diff --git a/lib/rating/models/rating/rating.rb b/lib/rating/models/rating/rating.rb
index cc5aa77..cd4d19e 100644
--- a/lib/rating/models/rating/rating.rb
+++ b/lib/rating/models/rating/rating.rb
@@ -4,7 +4,7 @@ module Rating
   class Rating < ActiveRecord::Base
     self.table_name = 'rating_ratings'
 
-    belongs_to :resource , polymorphic: true
+    belongs_to :resource,  polymorphic: true
     belongs_to :scopeable, polymorphic: true
 
     validates :average, :estimate, :resource, :sum, :total, presence: true
@@ -18,7 +18,7 @@ module Rating
     class << self
       def averager_data(resource, scopeable)
         total_count    = how_many_resource_received_votes_sql?(distinct: false, scopeable: scopeable)
-        distinct_count = how_many_resource_received_votes_sql?(distinct: true , scopeable: scopeable)
+        distinct_count = how_many_resource_received_votes_sql?(distinct: true, scopeable: scopeable)
         values         = { resource_type: resource.class.base_class.name }
 
         values[:scopeable_type] = scopeable.class.base_class.name unless scopeable.nil?
diff --git a/spec/models/extension/order_by_rating_spec.rb b/spec/models/extension/order_by_rating_spec.rb
index 5c1ccae..c895220 100644
--- a/spec/models/extension/order_by_rating_spec.rb
+++ b/spec/models/extension/order_by_rating_spec.rb
@@ -16,8 +16,8 @@ RSpec.describe Rating::Extension, ':order_by_rating' do
     end
   end
 
-  context 'filtering by :average' do
-    context 'as asc' do
+  context 'when filtering by :average' do
+    context 'with as asc' do
       it 'works' do
         expect(Article.order_by_rating(:average, :asc)).to eq [
           article_3,
@@ -35,7 +35,7 @@ RSpec.describe Rating::Extension, ':order_by_rating' do
       end
     end
 
-    context 'as desc' do
+    context 'with as desc' do
       it 'works' do
         expect(Article.order_by_rating(:average, :desc)).to eq [
           article_1,
@@ -54,8 +54,8 @@ RSpec.describe Rating::Extension, ':order_by_rating' do
     end
   end
 
-  context 'filtering by :estimate' do
-    context 'as asc' do
+  context 'when filtering by :estimate' do
+    context 'with as asc' do
       it 'works' do
         expect(Article.order_by_rating(:estimate, :asc)).to eq [
           article_3,
@@ -73,7 +73,7 @@ RSpec.describe Rating::Extension, ':order_by_rating' do
       end
     end
 
-    context 'as desc' do
+    context 'with as desc' do
       it 'works' do
         expect(Article.order_by_rating(:estimate, :desc)).to eq [
           article_1,
@@ -92,7 +92,7 @@ RSpec.describe Rating::Extension, ':order_by_rating' do
     end
   end
 
-  context 'filtering by :sum' do
+  context 'when filtering by :sum' do
     context 'as asc' do
       it 'works' do
         expect(Article.order_by_rating(:sum, :asc)).to eq [
@@ -111,7 +111,7 @@ RSpec.describe Rating::Extension, ':order_by_rating' do
       end
     end
 
-    context 'as desc' do
+    context 'with as desc' do
       it 'works' do
         expect(Article.order_by_rating(:sum, :desc)).to eq [
           article_1,
@@ -130,8 +130,8 @@ RSpec.describe Rating::Extension, ':order_by_rating' do
     end
   end
 
-  context 'filtering by :total' do
-    context 'as asc' do
+  context 'when filtering by :total' do
+    context 'with as asc' do
       it 'works' do
         result = Article.order_by_rating(:total, :asc)
 
@@ -148,7 +148,7 @@ RSpec.describe Rating::Extension, ':order_by_rating' do
       end
     end
 
-    context 'as desc' do
+    context 'with as desc' do
       it 'works' do
         result = Article.order_by_rating(:total, :desc)
 
diff --git a/spec/models/extension/rated_question_spec.rb b/spec/models/extension/rated_question_spec.rb
index b30d880..fad5483 100644
--- a/spec/models/extension/rated_question_spec.rb
+++ b/spec/models/extension/rated_question_spec.rb
@@ -8,13 +8,13 @@ RSpec.describe Rating::Extension, ':rated?' do
 
   context 'with no scopeable' do
     context 'when has no rate for the given resource' do
-      before { allow(author).to receive(:rate_for).with(article, scope: nil) { nil } }
+      before { allow(author).to receive(:rate_for).with(article, scope: nil).and_return nil }
 
       specify { expect(author.rated?(article)).to eq false }
     end
 
     context 'when has rate for the given resource' do
-      before { allow(author).to receive(:rate_for).with(article, scope: nil) { double } }
+      before { allow(author).to receive(:rate_for).with(article, scope: nil).and_return double }
 
       specify { expect(author.rated?(article)).to eq true }
     end
@@ -24,13 +24,13 @@ RSpec.describe Rating::Extension, ':rated?' do
     let!(:category) { build :category }
 
     context 'when has no rate for the given resource' do
-      before { allow(author).to receive(:rate_for).with(article, scope: category) { nil } }
+      before { allow(author).to receive(:rate_for).with(article, scope: category).and_return nil }
 
       specify { expect(author.rated?(article, scope: category)).to eq false }
     end
 
     context 'when has rate for the given resource' do
-      before { allow(author).to receive(:rate_for).with(article, scope: category) { double } }
+      before { allow(author).to receive(:rate_for).with(article, scope: category).and_return double }
 
       specify { expect(author.rated?(article, scope: category)).to eq true }
     end
diff --git a/spec/models/extension/rated_spec.rb b/spec/models/extension/rated_spec.rb
index 1110d8d..0f85790 100644
--- a/spec/models/extension/rated_spec.rb
+++ b/spec/models/extension/rated_spec.rb
@@ -19,25 +19,21 @@ RSpec.describe Rating::Extension, ':rated' do
   end
 
   context 'when destroy author' do
-    before do
+    it 'destroys rates of that author' do
       expect(Rating::Rate.where(author: author_1).count).to eq 4
 
       author_1.destroy!
-    end
 
-    it 'destroys rates of that author' do
       expect(Rating::Rate.where(author: author_1).count).to eq 0
     end
   end
 
   context 'when destroy resource rated by author' do
-    before do
+    it 'destroys rates of that resource' do
       expect(Rating::Rate.where(resource: article_1).count).to eq 4
 
       article_1.destroy!
-    end
 
-    it 'destroys rates of that resource' do
       expect(Rating::Rate.where(resource: article_1).count).to eq 0
     end
   end
diff --git a/spec/models/rating/averager_data_spec.rb b/spec/models/rating/averager_data_spec.rb
index 979a92c..a6faf6d 100644
--- a/spec/models/rating/averager_data_spec.rb
+++ b/spec/models/rating/averager_data_spec.rb
@@ -7,26 +7,26 @@ RSpec.describe Rating::Rating, ':averager_data' do
   include_context 'with_database_records'
 
   context 'with no scopeable' do
-    subject { described_class.averager_data article_1, nil }
+    subject(:result) { described_class.averager_data article_1, nil }
 
     it 'returns the values average of given resource type' do
-      expect(subject.as_json['rating_avg']).to eq 30.5
+      expect(result.as_json['rating_avg']).to eq 30.5
     end
 
     it 'returns the average of number of records for the given resource type' do
-      expect(subject.as_json['count_avg']).to eq 1.3333333333333333
+      expect(result.as_json['count_avg']).to eq 1.3333333333333333
     end
   end
 
   context 'with scopeable' do
-    subject { described_class.averager_data article_1, category }
+    subject(:result) { described_class.averager_data article_1, category }
 
     it 'returns the values average of given resource type' do
-      expect(subject.as_json['rating_avg']).to eq 1.5
+      expect(result.as_json['rating_avg']).to eq 1.5
     end
 
     it 'returns the average of number of records for the given resource type' do
-      expect(subject.as_json['count_avg']).to eq 2
+      expect(result.as_json['count_avg']).to eq 2
     end
   end
 end
diff --git a/spec/models/rating/data_spec.rb b/spec/models/rating/data_spec.rb
index 095befd..484fe1f 100644
--- a/spec/models/rating/data_spec.rb
+++ b/spec/models/rating/data_spec.rb
@@ -7,42 +7,42 @@ RSpec.describe Rating::Rating, ':data' do
   include_context 'with_database_records'
 
   context 'with no scopeable' do
-    subject { described_class.data article_1, nil }
+    subject(:result) { described_class.data article_1, nil }
 
     it 'returns the average of value for a resource' do
-      expect(subject[:average]).to eq 50.5
+      expect(result[:average]).to eq 50.5
     end
 
     it 'returns the sum of values for a resource' do
-      expect(subject[:sum]).to eq 101
+      expect(result[:sum]).to eq 101
     end
 
     it 'returns the count of votes for a resource' do
-      expect(subject[:total]).to eq 2
+      expect(result[:total]).to eq 2
     end
 
     it 'returns the estimate for a resource' do
-      expect(subject[:estimate]).to eq 42.50000000000001
+      expect(result[:estimate]).to eq 42.50000000000001
     end
   end
 
   context 'with scopeable' do
-    subject { described_class.data article_1, category }
+    subject(:result) { described_class.data article_1, category }
 
     it 'returns the average of value for a resource' do
-      expect(subject[:average]).to eq 1.5
+      expect(result[:average]).to eq 1.5
     end
 
     it 'returns the sum of values for a resource' do
-      expect(subject[:sum]).to eq 3
+      expect(result[:sum]).to eq 3
     end
 
     it 'returns the count of votes for a resource' do
-      expect(subject[:total]).to eq 2
+      expect(result[:total]).to eq 2
     end
 
     it 'returns the estimate for a resource' do
-      expect(subject[:estimate]).to eq 1.5
+      expect(result[:estimate]).to eq 1.5
     end
   end
 end
diff --git a/spec/models/rating/values_data_spec.rb b/spec/models/rating/values_data_spec.rb
index 95ffe4a..82bef04 100644
--- a/spec/models/rating/values_data_spec.rb
+++ b/spec/models/rating/values_data_spec.rb
@@ -7,34 +7,34 @@ RSpec.describe Rating::Rating, ':values_data' do
   include_context 'with_database_records'
 
   context 'with no scopeable' do
-    subject { described_class.values_data article_1, nil }
+    subject(:result) { described_class.values_data article_1, nil }
 
     it 'returns the average of value for a resource' do
-      expect(subject.as_json['rating_avg']).to eq 50.5
+      expect(result.as_json['rating_avg']).to eq 50.5
     end
 
     it 'returns the sum of values for a resource' do
-      expect(subject.as_json['rating_sum']).to eq 101
+      expect(result.as_json['rating_sum']).to eq 101
     end
 
     it 'returns the count of votes for a resource' do
-      expect(subject.as_json['rating_count']).to eq 2
+      expect(result.as_json['rating_count']).to eq 2
     end
   end
 
   context 'with scopeable' do
-    subject { described_class.values_data article_1, category }
+    subject(:result) { described_class.values_data article_1, category }
 
     it 'returns the average of value for a resource' do
-      expect(subject.as_json['rating_avg']).to eq 1.5
+      expect(result.as_json['rating_avg']).to eq 1.5
     end
 
     it 'returns the sum of values for a resource' do
-      expect(subject.as_json['rating_sum']).to eq 3
+      expect(result.as_json['rating_sum']).to eq 3
     end
 
     it 'returns the count of votes for a resource' do
-      expect(subject.as_json['rating_count']).to eq 2
+      expect(result.as_json['rating_count']).to eq 2
     end
   end
 end
diff --git a/spec/support/shared_context/with_database_records.rb b/spec/support/shared_context/with_database_records.rb
index 7e9df85..087212a 100644
--- a/spec/support/shared_context/with_database_records.rb
+++ b/spec/support/shared_context/with_database_records.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.shared_context 'with_database_records' do
   let!(:category) { create :category }