From 8243eb3f0e3ee06a793831ae0899bfe409a31903 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hannes=20Rosen=C3=B6gger?= <123haynes@gmail.com>
Date: Sat, 17 Jan 2015 14:12:49 +0100
Subject: [PATCH] Show tags in commit view

---
 CHANGELOG                                       |  2 +-
 app/controllers/projects/commit_controller.rb   |  1 +
 app/helpers/commits_helper.rb                   |  6 ++++++
 app/models/repository.rb                        | 17 +++++++++++++++++
 app/views/projects/commit/_commit_box.html.haml |  7 +++++++
 5 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG b/CHANGELOG
index 387d42a7aca..39079daa26a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -11,7 +11,7 @@ v 7.8.0
   - 
   - 
   - 
-  - 
+  - Show tags in commit view (Hannes Rosenögger)
   - 
   - 
   - 
diff --git a/app/controllers/projects/commit_controller.rb b/app/controllers/projects/commit_controller.rb
index dac858d8e16..470efbd2114 100644
--- a/app/controllers/projects/commit_controller.rb
+++ b/app/controllers/projects/commit_controller.rb
@@ -12,6 +12,7 @@ class Projects::CommitController < Projects::ApplicationController
 
     @line_notes = @project.notes.for_commit_id(commit.id).inline
     @branches = @project.repository.branch_names_contains(commit.id)
+    @tags = @project.repository.tag_names_contains(commit.id)
     @diffs = @commit.diffs
     @note = @project.build_commit_note(commit)
     @notes_count = @project.notes.for_commit_id(commit.id).count
diff --git a/app/helpers/commits_helper.rb b/app/helpers/commits_helper.rb
index 36adeadd8a5..6a6d483ba66 100644
--- a/app/helpers/commits_helper.rb
+++ b/app/helpers/commits_helper.rb
@@ -65,6 +65,12 @@ module CommitsHelper
     branches.sort.map { |branch| link_to(branch, project_tree_path(project, branch)) }.join(", ").html_safe
   end
 
+  # Returns the sorted links to tags, separated by a comma
+  def commit_tags_links(project, tags)
+    sorted = VersionSorter.rsort(tags)
+    sorted.map { |tag| link_to(tag, project_commits_path(project, project.repository.find_tag(tag).name)) }.join(", ").html_safe
+  end
+
   def link_to_browse_code(project, commit)
     if current_controller?(:projects, :commits)
       if @repo.blob_at(commit.id, @path)
diff --git a/app/models/repository.rb b/app/models/repository.rb
index 93994123a90..e93c76790c7 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -312,4 +312,21 @@ class Repository
       []
     end
   end
+
+  def tag_names_contains(sha)
+    args = %W(git tag --contains #{sha})
+    names = Gitlab::Popen.popen(args, path_to_repo).first
+
+    if names.respond_to?(:split)
+      names = names.split("\n").map(&:strip)
+
+      names.each do |name|
+        name.slice! '* '
+      end
+
+      names
+    else
+      []
+    end
+  end
 end
diff --git a/app/views/projects/commit/_commit_box.html.haml b/app/views/projects/commit/_commit_box.html.haml
index e149f017f84..1d4658432ae 100644
--- a/app/views/projects/commit/_commit_box.html.haml
+++ b/app/views/projects/commit/_commit_box.html.haml
@@ -50,6 +50,13 @@
         %span.js-details-content.hide
           = commit_branches_links(@project, @branches)
 
+- if @tags.any?
+  .commit-info-row
+    %span.cgray
+      Tags: 
+    %span
+      = commit_tags_links(@project, @tags)
+
 .commit-box
   %h3.commit-title
     = gfm escape_once(@commit.title)