diff --git a/app/models/user.rb b/app/models/user.rb
index f919ed1b..e7b2cbc1 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -92,6 +92,15 @@ class User < ApplicationRecord
   # has_many :libraries, dependent: :destroy
   has_many :project_trends, dependent: :destroy
 
+  # sponsor
+  has_many :as_sponsors, class_name: 'Sponsorship', foreign_key: 'sponsor_id', dependent: :destroy
+  has_many :as_sponsored, class_name: 'Sponsorship', foreign_key: 'developer_id', dependent: :destroy
+  has_many :stopped_sponsors, class_name: 'StoppedSponsorship', foreign_key: 'sponsor_id', dependent: :destroy
+  has_many :stopped_sponsored, class_name: 'StoppedSponsorship', foreign_key: 'developer_id', dependent: :destroy
+  has_many :sponsor_tier, dependent: :destroy
+  has_one :wallet, dependent: :destroy
+  # has_many :waitlist
+
   # Groups and active users
   scope :active, lambda { where(status: STATUS_ACTIVE) }
   scope :like, lambda { |keywords|
diff --git a/db/migrate/20200724095001_create_waitlists.rb b/db/migrate/20200725025555_create_waitlists.rb
similarity index 56%
rename from db/migrate/20200724095001_create_waitlists.rb
rename to db/migrate/20200725025555_create_waitlists.rb
index d0df8a23..701006e9 100644
--- a/db/migrate/20200724095001_create_waitlists.rb
+++ b/db/migrate/20200725025555_create_waitlists.rb
@@ -1,8 +1,10 @@
 class CreateWaitlists < ActiveRecord::Migration[5.2]
   def change
     create_table :waitlists do |t|
-      t.integer :applicant_id
-      t.integer :reviewer_id
+      t.string :applicant_id
+      t.string :integer
+      t.string :reviewer_id
+      t.string :integer
 
       t.timestamps
     end
diff --git a/db/migrate/20200724095057_create_passed_waitlists.rb b/db/migrate/20200725025657_create_passed_waitlists.rb
similarity index 100%
rename from db/migrate/20200724095057_create_passed_waitlists.rb
rename to db/migrate/20200725025657_create_passed_waitlists.rb