fixup! override content method

lib/api/templates.rb

@@ -27,11 +27,7 @@ module API
         required_attributes! [:name]
 
         new_template = klass.find(params[:name])
-        not_found!("#{template.to_s.singularize}") unless new_template
-
-        if new_template.class == Gitlab::Template::GitlabCiYml
-          new_template.content = "# This file is a template, and might need editing before it works on your project.\n" + new_template.content
-        end
+        not_found!(template.to_s.singularize) unless new_template
 
         present new_template, with: Entities::Template
       end

lib/gitlab/template/base_template.rb

 module Gitlab
   module Template
     class BaseTemplate
-      attr_writer :content
-
       def initialize(path)
         @path = path
       end
@@ -12,19 +10,7 @@ module Gitlab
       end
 
       def content
-        @content ||= File.read(@path)
-      end
-
-      def categories
-        raise NotImplementedError
-      end
-
-      def extension
-        raise NotImplementedError
-      end
-
-      def base_dir
-        raise NotImplementedError
+        File.read(@path)
       end
 
       class << self
@@ -39,6 +25,18 @@ module Gitlab
           directory ? new(File.join(category_directory(directory), file_name)) : nil
         end
 
+        def categories
+          raise NotImplementedError
+        end
+
+        def extension
+          raise NotImplementedError
+        end
+
+        def base_dir
+          raise NotImplementedError
+        end
+
         def by_category(category)
           templates_for_directory(category_directory(category))
         end

lib/gitlab/template/gitlab_ci_yml.rb

 module Gitlab
   module Template
     class GitlabCiYml < BaseTemplate
+      def content
+        explanation = "# This file is a template, and might need editing before it works on your project."
+        [explanation, super].join("\n")
+      end
+
       class << self
         def extension
           '.gitlab-ci.yml'

lib/tasks/gitlab/update_templates.rake

@@ -27,7 +27,7 @@ namespace :gitlab do
   # - The LICENSE, because we have to
   # - The sub dirs so we can organise the file by category
   # - The templates themself
-  # - Dir.entires returns also the entries '.' and '..'
+  # - Dir.entries returns also the entries '.' and '..'
   def remove_unneeded_files(directory, regex)
     Dir.foreach(directory) do |file|
       FileUtils.rm_rf(File.join(directory, file)) unless file =~ regex