Add rake to remove deprecated settings

lib/tasks/settings.rake

@@ -2,38 +2,57 @@ namespace :settings do
 
   desc "Changes Setting key per_page_code for per_page_code_head"
   task per_page_code_migration: :environment do
-    per_page_code_setting = Setting.where(key: 'per_page_code').first
+    per_page_code = Setting.where(key: "per_page_code").first
+    per_page_code_head = Setting.where(key: "per_page_code_head").first
 
-    Setting['per_page_code_head'] = per_page_code_setting&.value.to_s if Setting.where(key: 'per_page_code_head').first.blank?
-    per_page_code_setting.destroy if per_page_code_setting.present?
+    Setting["per_page_code_head"] = per_page_code&.value.to_s if per_page_code_head.blank?
+    per_page_code.destroy if per_page_code.present?
   end
 
   desc "Create new Attached Documents feature setting"
   task create_attached_documents_setting: :environment do
-    Setting['feature.allow_attached_documents'] = true
+    Setting["feature.allow_attached_documents"] = true
   end
 
   desc "Enable recommendations settings"
   task enable_recommendations: :environment do
-    Setting['feature.user.recommendations'] = true
-    Setting['feature.user.recommendations_on_debates'] = true
-    Setting['feature.user.recommendations_on_proposals'] = true
+    Setting["feature.user.recommendations"] = true
+    Setting["feature.user.recommendations_on_debates"] = true
+    Setting["feature.user.recommendations_on_proposals"] = true
   end
 
   desc "Enable Help page"
   task enable_help_page: :environment do
-    Setting['feature.help_page'] = true
+    Setting["feature.help_page"] = true
   end
 
   desc "Enable Featured proposals"
   task enable_featured_proposals: :environment do
-    Setting['feature.featured_proposals'] = true
-    Setting['featured_proposals_number'] = 3
+    Setting["feature.featured_proposals"] = true
+    Setting["featured_proposals_number"] = 3
   end
 
   desc "Create new period to calculate hot_score"
   task create_hot_score_period_setting: :environment do
-    Setting['hot_score_period_in_days'] = 31
+    Setting["hot_score_period_in_days"] = 31
+  end
+
+  desc "Remove deprecated settings"
+  task remove_deprecated_settings: :environment do
+    deprecated_keys = [
+      "place_name",
+      "banner-style.banner-style-one",
+      "banner-style.banner-style-two",
+      "banner-style.banner-style-three",
+      "banner-img.banner-img-one",
+      "banner-img.banner-img-two",
+      "banner-img.banner-img-three",
+      "verification_offices_url"
+    ]
+
+    deprecated_keys.each do |key|
+      Setting.where(key: key).first&.destroy
+    end
   end
 
 end

spec/lib/tasks/settings_spec.rb

@@ -1,6 +1,39 @@
 require "rails_helper"
 
-describe "Settings Rake" do
+describe Setting do
+
+  context "Remove deprecated settings" do
+
+    let :run_remove_deprecated_settings_task do
+      Rake::Task["settings:remove_deprecated_settings"].reenable
+      Rake.application.invoke_task "settings:remove_deprecated_settings"
+    end
+
+    before do
+      Setting.create(key: "place_name", value: "City")
+      Setting.create(key: "banner-style.banner-style-one", value: "Style one")
+      Setting.create(key: "banner-style.banner-style-two", value: "Style two")
+      Setting.create(key: "banner-style.banner-style-three", value: "Style three")
+      Setting.create(key: "banner-img.banner-img-one", value: "Image 1")
+      Setting.create(key: "banner-img.banner-img-two", value: "Image 2")
+      Setting.create(key: "banner-img.banner-img-three", value: "Image 3")
+      Setting.create(key: "verification_offices_url", value: "http://offices.url")
+      Setting.create(key: "not_deprecated", value: "Setting not deprecated")
+      run_remove_deprecated_settings_task
+    end
+
+    it "Rake only removes deprecated settings" do
+      expect(Setting.where(key: "place_name").count).to eq(0)
+      expect(Setting.where(key: "banner-style.banner-style-one").count).to eq(0)
+      expect(Setting.where(key: "banner-style.banner-style-two").count).to eq(0)
+      expect(Setting.where(key: "banner-style.banner-style-three").count).to eq(0)
+      expect(Setting.where(key: "banner-img.banner-img-one").count).to eq(0)
+      expect(Setting.where(key: "banner-img.banner-img-two").count).to eq(0)
+      expect(Setting.where(key: "banner-img.banner-img-three").count).to eq(0)
+      expect(Setting.where(key: "verification_offices_url").count).to eq(0)
+      expect(Setting.where(key: "not_deprecated").count).to eq(1)
+    end
+  end
 
   describe "#per_page_code_migration" do