From bd68e9add190c5472e309f5d046194d544aa64ce Mon Sep 17 00:00:00 2001
From: Valery Sizov <valery@gitlab.com>
Date: Fri, 29 Sep 2017 19:07:27 +0300
Subject: [Port semi-linear history from EE] Move migration to CE and
 `merge_method` method

---
 app/models/project.rb                                   | 14 +++++++++++++-
 ...0926_add_merge_request_rebase_enabled_to_projects.rb | 17 +++++++++++++++++
 db/schema.rb                                            |  1 +
 3 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 db/migrate/20141126120926_add_merge_request_rebase_enabled_to_projects.rb

diff --git a/app/models/project.rb b/app/models/project.rb
index 1c3a78ff05a..fe442755619 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -1567,13 +1567,25 @@ class Project < ActiveRecord::Base
   def merge_method
     if self.merge_requests_ff_only_enabled
       :ff
+    elsif self.merge_requests_rebase_enabled
+      :rebase_merge
     else
       :merge
     end
   end
 
   def merge_method=(method)
-    self.merge_requests_ff_only_enabled = method.to_s == "ff"
+    case method.to_s
+    when "ff"
+      self.merge_requests_ff_only_enabled = true
+      self.merge_requests_rebase_enabled = true
+    when "rebase_merge"
+      self.merge_requests_ff_only_enabled = false
+      self.merge_requests_rebase_enabled = true
+    when "merge"
+      self.merge_requests_ff_only_enabled = false
+      self.merge_requests_rebase_enabled = false
+    end
   end
 
   def ff_merge_must_be_possible?
diff --git a/db/migrate/20141126120926_add_merge_request_rebase_enabled_to_projects.rb b/db/migrate/20141126120926_add_merge_request_rebase_enabled_to_projects.rb
new file mode 100644
index 00000000000..3dafdf0fde4
--- /dev/null
+++ b/db/migrate/20141126120926_add_merge_request_rebase_enabled_to_projects.rb
@@ -0,0 +1,17 @@
+# rubocop:disable all
+class AddMergeRequestRebaseEnabledToProjects < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_column_with_default(:projects, :merge_requests_rebase_enabled, :boolean, default: false)
+  end
+
+  def down
+    remove_column(:projects, :merge_requests_rebase_enabled)
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index ad0dba99488..7c7ee0b9d33 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -1217,6 +1217,7 @@ ActiveRecord::Schema.define(version: 20170921115009) do
     t.boolean "resolve_outdated_diff_discussions"
     t.boolean "repository_read_only"
     t.boolean "merge_requests_ff_only_enabled", default: false
+    t.boolean "merge_requests_rebase_enabled", default: false, null: false
   end
 
   add_index "projects", ["ci_id"], name: "index_projects_on_ci_id", using: :btree
-- 
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