From d779bd78a723c29b180e8b08aead074f5b8f5579 Mon Sep 17 00:00:00 2001
From: Jasder <2053003901@@qq.com>
Date: Wed, 18 Dec 2019 10:16:26 +0800
Subject: [PATCH] ADD a field 'ancestry' to project_categories table

---
 app/models/project_category.rb                              | 1 +
 .../20191218021144_add_ancestry_to_project_categories.rb    | 6 ++++++
 2 files changed, 7 insertions(+)
 create mode 100644 db/migrate/20191218021144_add_ancestry_to_project_categories.rb

diff --git a/app/models/project_category.rb b/app/models/project_category.rb
index 6da12560d..256b0cd1b 100644
--- a/app/models/project_category.rb
+++ b/app/models/project_category.rb
@@ -1,2 +1,3 @@
 class ProjectCategory < ApplicationRecord
+  has_ancestry
 end
diff --git a/db/migrate/20191218021144_add_ancestry_to_project_categories.rb b/db/migrate/20191218021144_add_ancestry_to_project_categories.rb
new file mode 100644
index 000000000..e08606ee9
--- /dev/null
+++ b/db/migrate/20191218021144_add_ancestry_to_project_categories.rb
@@ -0,0 +1,6 @@
+class AddAncestryToProjectCategories < ActiveRecord::Migration[5.2]
+  def change
+    add_column :project_categories, :ancestry, :string
+    add_index :project_categories, :ancestry
+  end
+end