Add data sharing agreement

app/models/data_sharing_agreement.rb

@@ -0,0 +1,4 @@
+class DataSharingAgreement < ApplicationRecord
+  belongs_to :organisation
+  belongs_to :data_protection_officer, class_name: "User"
+end

app/models/organisation.rb

@@ -4,6 +4,7 @@ class Organisation < ApplicationRecord
   has_many :managed_lettings_logs, class_name: "LettingsLog", foreign_key: "managing_organisation_id"
   has_many :owned_sales_logs, class_name: "SalesLog", foreign_key: "owning_organisation_id", dependent: :delete_all
   has_many :data_protection_confirmations
+  has_one :data_sharing_agreement
   has_many :organisation_rent_periods
   has_many :owned_schemes, class_name: "Scheme", foreign_key: "owning_organisation_id", dependent: :delete_all
   has_many :parent_organisation_relationships, foreign_key: :child_organisation_id, class_name: "OrganisationRelationship"

db/migrate/20230530094653_add_data_sharing_agreement.rb

@@ -0,0 +1,17 @@
+class AddDataSharingAgreement < ActiveRecord::Migration[7.0]
+  def change
+    create_table :data_sharing_agreements do |t|
+      t.belongs_to :organisation
+      t.belongs_to :data_protection_officer, class_name: "User"
+
+      t.datetime :signed_at, null: false
+
+      t.timestamps
+    end
+
+    add_index :data_sharing_agreements,
+              %i[organisation_id data_protection_officer_id],
+              unique: true,
+              name: "data_sharing_agreements_unique"
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_05_15_114101) do
+ActiveRecord::Schema[7.0].define(version: 2023_05_30_094653) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -56,6 +56,17 @@ ActiveRecord::Schema[7.0].define(version: 2023_05_15_114101) do
     t.index ["organisation_id"], name: "index_data_protection_confirmations_on_organisation_id"
   end
 
+  create_table "data_sharing_agreements", force: :cascade do |t|
+    t.bigint "organisation_id"
+    t.bigint "data_protection_officer_id"
+    t.datetime "signed_at", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["data_protection_officer_id"], name: "index_data_sharing_agreements_on_data_protection_officer_id"
+    t.index ["organisation_id", "data_protection_officer_id"], name: "data_sharing_agreements_unique", unique: true
+    t.index ["organisation_id"], name: "index_data_sharing_agreements_on_organisation_id"
+  end
+
   create_table "la_rent_ranges", force: :cascade do |t|
     t.integer "ranges_rent_id"
     t.integer "lettype"