Allow projects to be started from a template

Started implementation for the first iteration of
gitlab-org/gitlab-ce#32420. This will allow users to select a template
to start with, instead of an empty repository in the project just
created.

Internally this is basically a small extension of the ImportExport
GitLab projects we already support. We just import a certain import
tar archive. This commits includes the first one: Ruby on Rails. In the
future more will be added.

1 files changed, 14 insertions, 0 deletions

diff --git a/app/services/projects/create_from_template_service.rb b/app/services/projects/create_from_template_service.rb
new file mode 100644
index 00000000000..3fc5c4ad157
--- /dev/null
+++ b/app/services/projects/create_from_template_service.rb
@@ -0,0 +1,14 @@
+module Projects
+  class CreateFromTemplateService < BaseService
+    def initialize(user, params)
+      @current_user, @params = user, params.dup
+    end
+
+    def execute
+      params[:file] = Gitlab::ProjectTemplate.find(params[:template_title]).file
+
+      @params[:from_template] = true
+      GitlabProjectsImporterService.new(@current_user, @params).execute
+    end
+  end
+end