use class reader instead of dynamic constant

app/models/concerns/triggerable_hooks.rb

@@ -17,8 +17,10 @@ module TriggerableHooks
   class_methods do
     attr_reader :triggerable_hooks
 
+    attr_reader :triggers
+
     def hooks_for(trigger)
-      callable_scopes = self::TRIGGERS.keys + [:all]
+      callable_scopes = triggers.keys + [:all]
       return none unless callable_scopes.include?(trigger)
 
       public_send(trigger) # rubocop:disable GitlabSecurity/PublicSend
@@ -28,9 +30,9 @@ module TriggerableHooks
 
     def triggerable_hooks(hooks)
       triggers = AVAILABLE_TRIGGERS.slice(*hooks)
-      const_set('TRIGGERS', triggers)
+      @triggers = triggers
 
-      self::TRIGGERS.each do |trigger, event|
+      triggers.each do |trigger, event|
         scope trigger, -> { where(event => true) }
       end
     end

app/services/test_hooks/base_service.rb

@@ -9,7 +9,7 @@ module TestHooks
     end
 
     def execute
-      trigger_key = hook.class::TRIGGERS.key(trigger.to_sym)
+      trigger_key = hook.class.triggers.key(trigger.to_sym)
       trigger_data_method = "#{trigger}_data"
 
       if trigger_key.nil? || !self.respond_to?(trigger_data_method, true)

app/views/admin/hooks/edit.html.haml

@@ -13,7 +13,7 @@
   = render partial: 'form', locals: { form: f, hook: @hook }
   .form-actions
     = f.submit 'Save changes', class: 'btn btn-create'
-    = render 'shared/web_hooks/test_button', triggers: SystemHook::TRIGGERS, hook: @hook
+    = render 'shared/web_hooks/test_button', triggers: SystemHook.triggers, hook: @hook
     = link_to 'Remove', admin_hook_path(@hook), method: :delete, class: 'btn btn-remove pull-right', data: { confirm: 'Are you sure?' }
 
 %hr

app/views/admin/hooks/index.html.haml

@@ -22,12 +22,12 @@
       - @hooks.each do |hook|
         %li
           .controls
-            = render 'shared/web_hooks/test_button', triggers: SystemHook::TRIGGERS, hook: hook, button_class: 'btn-sm'
+            = render 'shared/web_hooks/test_button', triggers: SystemHook.triggers, hook: hook, button_class: 'btn-sm'
             = link_to 'Edit', edit_admin_hook_path(hook), class: 'btn btn-sm'
             = link_to 'Remove', admin_hook_path(hook), data: { confirm: 'Are you sure?' }, method: :delete, class: 'btn btn-remove btn-sm'
           .monospace= hook.url
           %div
-            - SystemHook::TRIGGERS.each_value do |event|
+            - SystemHook.triggers.each_value do |event|
               - if hook.public_send(event)
                 %span.label.label-gray= event.to_s.titleize
             %span.label.label-gray SSL Verification: #{hook.enable_ssl_verification ? 'enabled' : 'disabled'}

app/views/projects/hooks/edit.html.haml

@@ -12,7 +12,7 @@
       = render partial: 'shared/web_hooks/form', locals: { form: f, hook: @hook }
 
       = f.submit 'Save changes', class: 'btn btn-create'
-      = render 'shared/web_hooks/test_button', triggers: ProjectHook::TRIGGERS, hook: @hook
+      = render 'shared/web_hooks/test_button', triggers: ProjectHook.triggers, hook: @hook
       = link_to 'Remove', project_hook_path(@project, @hook), method: :delete, class: 'btn btn-remove pull-right', data: { confirm: 'Are you sure?' }
 
 %hr

app/views/projects/settings/integrations/_project_hook.html.haml

@@ -3,14 +3,14 @@
     .col-md-8.col-lg-7
       %strong.light-header= hook.url
       %div
-        - ProjectHook::TRIGGERS.each_value do |event|
+        - ProjectHook.triggers.each_value do |event|
           - if hook.public_send(event)
             %span.label.label-gray.deploy-project-label= event.to_s.titleize
     .col-md-4.col-lg-5.text-right-lg.prepend-top-5
       %span.append-right-10.inline
         SSL Verification: #{hook.enable_ssl_verification ? 'enabled' : 'disabled'}
       = link_to 'Edit', edit_project_hook_path(@project, hook), class: 'btn btn-sm'
-      = render 'shared/web_hooks/test_button', triggers: ProjectHook::TRIGGERS, hook: hook, button_class: 'btn-sm'
+      = render 'shared/web_hooks/test_button', triggers: ProjectHook.triggers, hook: hook, button_class: 'btn-sm'
       = link_to project_hook_path(@project, hook), data: { confirm: 'Are you sure?'}, method: :delete, class: 'btn btn-transparent' do
         %span.sr-only Remove
         = icon('trash')