Make name optional for release entity

Use tag if release name is blank

Closes https://gitlab.com/gitlab-org/gitlab/issues/31868

See merge request https://gitlab.com/gitlab-org/gitlab/merge_requests/19705

app/mailers/emails/releases.rb

@@ -21,7 +21,13 @@ module Emails
     private
 
     def release_email_subject
-      release_info = [@release.name, @release.tag].select(&:presence).join(' - ')
+      release_info =
+        if @release.name == @release.tag
+          @release.tag
+        else
+          [@release.name, @release.tag].select(&:presence).join(' - ')
+        end
+
       "New release: #{release_info}"
     end
   end

app/models/release.rb

@@ -69,6 +69,10 @@ class Release < ApplicationRecord
     released_at.present? && released_at > Time.zone.now
   end
 
+  def name
+    self.read_attribute(:name) || tag
+  end
+
   private
 
   def actual_sha

changelogs/unreleased/31868-make-name-optional-parameter-of-release-entity.yml

+---
+title: Made `name` optional parameter of Release entity
+merge_request: 19705
+author:
+type: changed

doc/api/releases/index.md

@@ -303,7 +303,7 @@ POST /projects/:id/releases
 | Attribute          | Type            | Required                    | Description                                                                                                                      |
 | -------------------| --------------- | --------                    | -------------------------------------------------------------------------------------------------------------------------------- |
 | `id`               | integer/string  | yes                         | The ID or [URL-encoded path of the project](../README.md#namespaced-path-encoding).                                              |
-| `name`             | string          | yes                         | The release name.                                                                                                                |
+| `name`             | string          | no                          | The release name.                                                                                                                |
 | `tag_name`         | string          | yes                         | The tag where the release will be created from.                                                                                  |
 | `description`      | string          | yes                         | The description of the release. You can use [markdown](../../user/markdown.md).                                                  |
 | `ref`              | string          | yes, if `tag_name` doesn't exist | If `tag_name` doesn't exist, the release will be created from `ref`. It can be a commit SHA, another tag name, or a branch name. |

lib/api/entities.rb

@@ -1299,7 +1299,9 @@ module API
     class Release < Grape::Entity
       include ::API::Helpers::Presentable
 
-      expose :name
+      expose :name do |release, _|
+        can_download_code? ? release.name : "Release-#{release.id}"
+      end
       expose :tag, as: :tag_name, if: ->(_, _) { can_download_code? }
       expose :description
       expose :description_html do |entity|

lib/api/releases.rb

@@ -45,7 +45,7 @@ module API
       end
       params do
         requires :tag_name,    type: String, desc: 'The name of the tag', as: :tag
-        requires :name,        type: String, desc: 'The name of the release'
+        optional :name,        type: String, desc: 'The name of the release'
         requires :description, type: String, desc: 'The release notes'
         optional :ref,         type: String, desc: 'The commit sha or branch name'
         optional :assets, type: Hash do

spec/fixtures/api/schemas/release.json

 {
   "type": "object",
-  "required": ["name", "tag_name"],
+  "required": ["tag_name", "description"],
   "properties": {
     "name": { "type": "string" },
     "tag_name": { "type": "string" },
+    "ref": { "type": "string "},
     "description": { "type": "string" },
     "description_html": { "type": "string" },
     "created_at": { "type": "date" },

spec/mailers/emails/releases_spec.rb

@@ -18,6 +18,7 @@ describe Emails::Releases do
 
     context 'when the release has a name' do
       it 'shows the correct subject' do
+        release.name = 'beta-1'
         expected_subject = "#{release.project.name} | New release: #{release.name} - #{release.tag}"
         is_expected.to have_subject(expected_subject)
       end

spec/models/evidence_spec.rb

@@ -27,7 +27,7 @@ describe Evidence do
       let(:release) { create(:release, project: project, name: nil) }
 
       it 'creates a valid JSON object' do
-        expect(release.name).to be_nil
+        expect(release.name).to eq(release.tag)
         expect(summary_json).to match_schema(schema_file)
       end
     end

spec/models/release_spec.rb

@@ -34,7 +34,7 @@ RSpec.describe Release do
 
         expect(existing_release_without_name).to be_valid
         expect(existing_release_without_name.description).to eq("change")
-        expect(existing_release_without_name.name).to be_nil
+        expect(existing_release_without_name.name).not_to be_nil
       end
     end
 
@@ -129,4 +129,16 @@ RSpec.describe Release do
       end
     end
   end
+
+  describe '#name' do
+    context 'name is nil' do
+      before do
+        release.update(name: nil)
+      end
+
+      it 'returns tag' do
+        expect(release.name).to eq(release.tag)
+      end
+    end
+  end
 end