1 files changed, 55 insertions, 0 deletions
diff --git a/lib/api/entities/basic_project_details.rb b/lib/api/entities/basic_project_details.rb
new file mode 100644
index 00000000000..9ea3aeb9903
--- /dev/null
+++ b/lib/api/entities/basic_project_details.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class BasicProjectDetails < ProjectIdentity
+      include ::API::ProjectsRelationBuilder
+
+      expose :default_branch, if: -> (project, options) { Ability.allowed?(options[:current_user], :download_code, project) }
+      # Avoids an N+1 query: https://github.com/mbleigh/acts-as-taggable-on/issues/91#issuecomment-168273770
+      expose :tag_list do |project|
+        # project.tags.order(:name).pluck(:name) is the most suitable option
+        # to avoid loading all the ActiveRecord objects but, if we use it here
+        # it override the preloaded associations and makes a query
+        # (fixed in https://github.com/rails/rails/pull/25976).
+        project.tags.map(&:name).sort
+      end
+
+      expose :ssh_url_to_repo, :http_url_to_repo, :web_url, :readme_url
+
+      expose :license_url, if: :license do |project|
+        license = project.repository.license_blob
+
+        if license
+          Gitlab::Routing.url_helpers.project_blob_url(project, File.join(project.default_branch, license.path))
+        end
+      end
+
+      expose :license, with: 'API::Entities::LicenseBasic', if: :license do |project|
+        project.repository.license
+      end
+
+      expose :avatar_url do |project, options|
+        project.avatar_url(only_path: false)
+      end
+
+      expose :star_count, :forks_count
+      expose :last_activity_at
+      expose :namespace, using: 'API::Entities::NamespaceBasic'
+      expose :custom_attributes, using: 'API::Entities::CustomAttribute', if: :with_custom_attributes
+
+      # rubocop: disable CodeReuse/ActiveRecord
+      def self.preload_relation(projects_relation, options = {})
+        # Preloading tags, should be done with using only `:tags`,
+        # as `:tags` are defined as: `has_many :tags, through: :taggings`
+        # N+1 is solved then by using `subject.tags.map(&:name)`
+        # MR describing the solution: https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/20555
+        projects_relation.preload(:project_feature, :route)
+                         .preload(:import_state, :tags)
+                         .preload(:auto_devops)
+                         .preload(namespace: [:route, :owner])
+      end
+      # rubocop: enable CodeReuse/ActiveRecord
+    end
+  end
+end