Create refereces model

1 files changed, 16 insertions, 0 deletions

diff --git a/db/migrate/20170920214158_create_references_table.rb b/db/migrate/20170920214158_create_references_table.rb
new file mode 100644
index 000000000..75ce6c109
--- /dev/null
+++ b/db/migrate/20170920214158_create_references_table.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+class CreateReferencesTable < ActiveRecord::Migration[5.1]
+  def change
+    create_table :references do |t|
+      t.integer  :source_id,              null: false
+      t.string   :source_type, limit: 60, null: false
+      t.integer  :target_id,              null: false
+      t.string   :target_type, limit: 60, null: false
+    end
+
+    add_index :references, %i[source_id source_type target_id target_type],
+              name: :index_references_on_source_and_target, unique: true
+    add_index :references, %i[source_id source_type], name: :index_references_on_source_id_and_source_type
+  end
+end