Add latest changes from gitlab-org/gitlab@master

1 files changed, 44 insertions, 0 deletions

diff --git a/app/models/concerns/has_wiki.rb b/app/models/concerns/has_wiki.rb
new file mode 100644
index 00000000000..4dd72216e77
--- /dev/null
+++ b/app/models/concerns/has_wiki.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+module HasWiki
+  extend ActiveSupport::Concern
+
+  included do
+    validate :check_wiki_path_conflict
+  end
+
+  def create_wiki
+    wiki.wiki
+    true
+  rescue Wiki::CouldNotCreateWikiError
+    errors.add(:base, _('Failed to create wiki'))
+    false
+  end
+
+  def wiki
+    strong_memoize(:wiki) do
+      Wiki.for_container(self, self.owner)
+    end
+  end
+
+  def wiki_repository_exists?
+    wiki.repository_exists?
+  end
+
+  def after_wiki_activity
+    true
+  end
+
+  private
+
+  def check_wiki_path_conflict
+    return if path.blank?
+
+    path_to_check = path.ends_with?('.wiki') ? path.chomp('.wiki') : "#{path}.wiki"
+
+    if Project.in_namespace(parent_id).where(path: path_to_check).exists? ||
+        GroupsFinder.new(nil, parent: parent_id).execute.where(path: path_to_check).exists?
+      errors.add(:name, _('has already been taken'))
+    end
+  end
+end