Migrate issue/mr labels from act_as_taggable to own labels

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/db/migrate/20140729152420_migrate_taggable_labels.rb b/db/migrate/20140729152420_migrate_taggable_labels.rb
new file mode 100644
index 00000000000..0b844720ba1
--- /dev/null
+++ b/db/migrate/20140729152420_migrate_taggable_labels.rb
@@ -0,0 +1,27 @@
+class MigrateTaggableLabels < ActiveRecord::Migration
+  def up
+    taggings = ActsAsTaggableOn::Tagging.where(taggable_type: ['Issue', 'MergeRequest'], context: 'labels')
+    taggings.find_each(batch_size: 500) do |tagging|
+      create_label_from_tagging(tagging)
+    end
+  end
+
+  def down
+    Label.destroy_all
+    LabelLink.destroy_all
+  end
+
+  private
+
+  def create_label_from_tagging(tagging)
+    target = tagging.taggable
+    label_name = tagging.tag.name
+    label = target.project.labels.find_or_create_by(title: label_name)
+
+    if LabelLink.create(label: label, target: target)
+      print '.'
+    else
+      print 'F'
+    end
+  end
+end