Add ability to add an alert to Todos

Support alerts as a target_type so that they
display in the To Do list. This does not include
the logic to populate alerts to the todo list.

app/helpers/todos_helper.rb

@@ -55,6 +55,7 @@ module TodosHelper
 
   def todo_target_type_name(todo)
     return _('design') if todo.for_design?
+    return _('alert') if todo.for_alert?
 
     todo.target_type.titleize.downcase
   end
@@ -68,6 +69,8 @@ module TodosHelper
       project_commit_path(todo.project, todo.target, path_options)
     elsif todo.for_design?
       todos_design_path(todo, path_options)
+    elsif todo.for_alert?
+      details_project_alert_management_path(todo.project, todo.target)
     else
       path = [todo.resource_parent, todo.target]
 

app/models/alert_management/alert.rb

@@ -4,6 +4,7 @@ require_dependency 'alert_management'
 
 module AlertManagement
   class Alert < ApplicationRecord
+    include IidRoutes
     include AtomicInternalId
     include ShaAttribute
     include Sortable
@@ -143,6 +144,12 @@ module AlertManagement
       increment!(:events)
     end
 
+    # required for todos (typically contains an identifier like issue iid)
+    #  no-op; we could use iid, but we don't have a reference prefix
+    def to_reference(_from = nil, full: false)
+      ''
+    end
+
     private
 
     def hosts_length

app/models/todo.rb

@@ -189,6 +189,10 @@ class Todo < ApplicationRecord
     target_type == DesignManagement::Design.name
   end
 
+  def for_alert?
+    target_type == AlertManagement::Alert.name
+  end
+
   # override to return commits, which are not active record
   def target
     if for_commit?

locale/gitlab.pot

@@ -25923,6 +25923,9 @@ msgstr ""
 msgid "ago"
 msgstr ""
 
+msgid "alert"
+msgstr ""
+
 msgid "allowed to fail"
 msgstr ""
 

spec/helpers/todos_helper_spec.rb

@@ -20,6 +20,10 @@ describe TodosHelper do
            author: author,
            note: note)
   end
+  let_it_be(:alert_todo) do
+    alert = create(:alert_management_alert, iid: 1001)
+    create(:todo, target: alert)
+  end
 
   describe '#todos_count_format' do
     it 'shows fuzzy count for 100 or more items' do
@@ -115,6 +119,18 @@ describe TodosHelper do
         expect(path).to eq("#{issue_path}/designs/#{design.filename}##{dom_id(design_todo.note)}")
       end
     end
+
+    context 'when given an alert' do
+      let(:todo) { alert_todo }
+
+      it 'responds with an appropriate path' do
+        path = helper.todo_target_path(todo)
+
+        expect(path).to eq(
+          "/#{todo.project.full_path}/-/alert_management/#{todo.target.iid}/details"
+        )
+      end
+    end
   end
 
   describe '#todo_target_type_name' do
@@ -127,6 +143,16 @@ describe TodosHelper do
         expect(name).to eq('design')
       end
     end
+
+    context 'when given an alert todo' do
+      let(:todo) { alert_todo }
+
+      it 'responds with an appropriate target type name' do
+        name = helper.todo_target_type_name(todo)
+
+        expect(name).to eq('alert')
+      end
+    end
   end
 
   describe '#todo_types_options' do

spec/models/alert_management/alert_spec.rb

@@ -242,6 +242,12 @@ describe AlertManagement::Alert do
     end
   end
 
+  describe '#to_reference' do
+    let(:alert) { build(:alert_management_alert) }
+
+    it { expect(alert.to_reference).to eq('') }
+  end
+
   describe '#trigger' do
     subject { alert.trigger }
 

spec/models/todo_spec.rb

@@ -100,6 +100,20 @@ describe Todo do
     end
   end
 
+  describe '#for_alert?' do
+    it 'returns true when target is a Alert' do
+      subject.target_type = 'AlertManagement::Alert'
+
+      expect(subject.for_alert?).to eq(true)
+    end
+
+    it 'returns false when target is not a Alert' do
+      subject.target_type = 'Issue'
+
+      expect(subject.for_alert?).to eq(false)
+    end
+  end
+
   describe '#target' do
     context 'for commits' do
       let(:project) { create(:project, :repository) }