Show fork information on the project panel

app/views/projects/_home_panel.html.haml

 - empty_repo = @project.empty_repo?
+- fork_network = @project.fork_network
+- forked_from_project = @project.forked_from_project || fork_network&.root_project
 .project-home-panel.text-center{ class: ("empty-project" if empty_repo) }
   .limit-container-width{ class: container_class }
     .avatar-container.s70.project-avatar
@@ -12,11 +14,15 @@
       - if @project.description.present?
         = markdown_field(@project, :description)
 
-      - if forked_from_project = @project.forked_from_project
+      - if @project.forked?
         %p
+          - if forked_from_project
             #{ s_('ForkedFromProjectPath|Forked from') }
             = link_to project_path(forked_from_project) do
-            = forked_from_project.namespace.try(:name)
+              = forked_from_project.full_name
+          - else
+            - deleted_message = s_('ForkedFromProjectPath|Forked from %{project_name} (deleted)')
+            = deleted_message % { project_name: fork_network.deleted_root_project_name }
 
     .project-repo-buttons
       .count-buttons

locale/gitlab.pot

@@ -8,8 +8,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: gitlab 1.0.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2017-10-04 23:47+0100\n"
-"PO-Revision-Date: 2017-10-04 23:47+0100\n"
+"POT-Creation-Date: 2017-10-06 18:33+0200\n"
+"PO-Revision-Date: 2017-10-06 18:33+0200\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "Language: \n"
@@ -23,6 +23,11 @@ msgid_plural "%d commits"
 msgstr[0] ""
 msgstr[1] ""
 
+msgid "%d layer"
+msgid_plural "%d layers"
+msgstr[0] ""
+msgstr[1] ""
+
 msgid "%s additional commit has been omitted to prevent performance issues."
 msgid_plural "%s additional commits have been omitted to prevent performance issues."
 msgstr[0] ""
@@ -59,6 +64,9 @@ msgstr[1] ""
 msgid "1st contribution!"
 msgstr ""
 
+msgid "2FA enabled"
+msgstr ""
+
 msgid "A collection of graphs regarding Continuous Integration"
 msgstr ""
 
@@ -528,6 +536,51 @@ msgstr ""
 msgid "Compare"
 msgstr ""
 
+msgid "Container Registry"
+msgstr ""
+
+msgid "ContainerRegistry|Created"
+msgstr ""
+
+msgid "ContainerRegistry|First log in to GitLab&rsquo;s Container Registry using your GitLab username and password. If you have %{link_2fa} you need to use a %{link_token}:"
+msgstr ""
+
+msgid "ContainerRegistry|GitLab supports up to 3 levels of image names. The following examples of images are valid for your project:"
+msgstr ""
+
+msgid "ContainerRegistry|How to use the Container Registry"
+msgstr ""
+
+msgid "ContainerRegistry|Learn more about"
+msgstr ""
+
+msgid "ContainerRegistry|No tags in Container Registry for this container image."
+msgstr ""
+
+msgid "ContainerRegistry|Once you log in, you&rsquo;re free to create and upload a container image using the common %{build} and %{push} commands"
+msgstr ""
+
+msgid "ContainerRegistry|Remove repository"
+msgstr ""
+
+msgid "ContainerRegistry|Remove tag"
+msgstr ""
+
+msgid "ContainerRegistry|Size"
+msgstr ""
+
+msgid "ContainerRegistry|Tag"
+msgstr ""
+
+msgid "ContainerRegistry|Tag ID"
+msgstr ""
+
+msgid "ContainerRegistry|Use different image names"
+msgstr ""
+
+msgid "ContainerRegistry|With the Docker Container Registry integrated into GitLab, every project can have its own space to store its Docker images."
+msgstr ""
+
 msgid "Contribution guide"
 msgstr ""
 
@@ -739,6 +792,9 @@ msgstr[1] ""
 msgid "ForkedFromProjectPath|Forked from"
 msgstr ""
 
+msgid "ForkedFromProjectPath|Forked from %{project_name} (deleted)"
+msgstr ""
+
 msgid "Format"
 msgstr ""
 
@@ -949,6 +1005,9 @@ msgstr ""
 msgid "New tag"
 msgstr ""
 
+msgid "No container images stored for this project. Add one by following the instructions above."
+msgstr ""
+
 msgid "No repository"
 msgstr ""
 
@@ -1024,6 +1083,9 @@ msgstr ""
 msgid "OpenedNDaysAgo|Opened"
 msgstr ""
 
+msgid "Opens in a new window"
+msgstr ""
+
 msgid "Options"
 msgstr ""
 
@@ -1350,6 +1412,15 @@ msgstr[1] ""
 msgid "Snippets"
 msgstr ""
 
+msgid "Something went wrong on our end."
+msgstr ""
+
+msgid "Something went wrong while fetching the projects."
+msgstr ""
+
+msgid "Something went wrong while fetching the registry list."
+msgstr ""
+
 msgid "SortOptions|Access level, ascending"
 msgstr ""
 
@@ -1905,3 +1976,6 @@ msgid "parent"
 msgid_plural "parents"
 msgstr[0] ""
 msgstr[1] ""
+
+msgid "personal access token"
+msgstr ""

spec/features/projects_spec.rb

@@ -77,6 +77,55 @@ feature 'Project' do
     end
   end
 
+  describe 'showing information about source of a project fork' do
+    let(:user) { create(:user) }
+    let(:base_project)  { create(:project, :public, :repository) }
+    let(:forked_project) { fork_project(base_project, user, repository: true) }
+
+    before do
+      sign_in user
+    end
+
+    it 'shows a link to the source project when it is available' do
+      visit project_path(forked_project)
+
+      expect(page).to have_content('Forked from')
+      expect(page).to have_link(base_project.full_name)
+    end
+
+    it 'does not contain fork network information for the root project' do
+      forked_project
+
+      visit project_path(base_project)
+
+      expect(page).not_to have_content('In fork network of')
+      expect(page).not_to have_content('Forked from')
+    end
+
+    it 'shows the name of the deleted project when the source was deleted' do
+      forked_project
+      Projects::DestroyService.new(base_project, base_project.owner).execute
+
+      visit project_path(forked_project)
+
+      expect(page).to have_content("Forked from #{base_project.full_name} (deleted)")
+    end
+
+    context 'a fork of a fork' do
+      let(:fork_of_fork) { fork_project(forked_project, user, repository: true) }
+
+      it 'links to the base project if the source project is removed' do
+        fork_of_fork
+        Projects::DestroyService.new(forked_project, user).execute
+
+        visit project_path(fork_of_fork)
+
+        expect(page).to have_content("Forked from")
+        expect(page).to have_link(base_project.full_name)
+      end
+    end
+  end
+
   describe 'removal', js: true do
     let(:user)    { create(:user, username: 'test', name: 'test') }
     let(:project) { create(:project, namespace: user.namespace, name: 'project1') }