Remove issues.assignee_id column

# See http://doc.gitlab.com/ce/development/migration_style_guide.html

# for more information on how to write migrations for GitLab.

class RemoveAssigneeIdFromIssue < ActiveRecord::Migration

  include Gitlab::Database::MigrationHelpers

  # Set this constant to true if this migration requires downtime.

  DOWNTIME = false

  # When a migration requires downtime you **must** uncomment the following

  # constant and define a short and easy to understand explanation as to why the

  # migration requires downtime.

  # DOWNTIME_REASON = ''

  # When using the methods "add_concurrent_index", "remove_concurrent_index" or

  # "add_column_with_default" you must disable the use of transactions

  # as these methods can not run in an existing transaction.

  # When using "add_concurrent_index" or "remove_concurrent_index" methods make sure

  # that either of them is the _only_ method called in the migration,

  # any other changes should go in a separate migration.

  # This ensures that upon failure _only_ the index creation or removing fails

  # and can be retried or reverted easily.

  #

  # To disable transactions uncomment the following line and remove these

  # comments:

  disable_ddl_transaction!

  def up

    remove_column :issues, :assignee_id

  end

  def down

    add_column :issues, :assignee_id, :integer

    add_concurrent_index :issues, :assignee_id

  end

end

#

# It's strongly recommended that you check this file into your version control system.

ActiveRecord::Schema.define(version: 20170516183131) do

ActiveRecord::Schema.define(version: 20170523073948) do

  # These are extensions that must be enabled in order to support this database

  enable_extension "plpgsql"

  create_table "issues", force: :cascade do |t|

    t.string "title"

    t.integer "assignee_id"

    t.integer "author_id"

    t.integer "project_id"

    t.datetime "created_at"

    t.integer "last_edited_by_id"

  end

  add_index "issues", ["assignee_id"], name: "index_issues_on_assignee_id", using: :btree

  add_index "issues", ["author_id"], name: "index_issues_on_author_id", using: :btree

  add_index "issues", ["confidential"], name: "index_issues_on_confidential", using: :btree

  add_index "issues", ["created_at"], name: "index_issues_on_created_at", using: :btree