Create CSV Variable Definitions model

app/models/csv_variable_definition.rb

@@ -0,0 +1,8 @@
+class CsvVariableDefinition < ApplicationRecord
+  validates :variable, presence: true
+  validates :definition, presence: true
+  validates :log_type, presence: true, inclusion: { in: %w[lettings sales] }
+  validates :user_type, presence: true, inclusion: { in: %w[user support] }
+  validates :year, presence: true, numericality: { only_integer: true, greater_than_or_equal_to: 2000, less_than_or_equal_to: 2099 }
+  attribute :last_accessed, :datetime
+end

db/migrate/20240726152326_create_csv_variable_definitions.rb

@@ -0,0 +1,17 @@
+class CreateCsvVariableDefinitions < ActiveRecord::Migration[7.0]
+  def change
+    create_table :csv_variable_definitions do |t|
+      t.string :variable, null: false
+      t.string :definition, null: false
+      t.string :log_type, null: false
+      t.string :user_type, null: false
+      t.integer :year, null: false
+      t.datetime :last_accessed
+      t.timestamps
+    end
+
+    add_check_constraint :csv_variable_definitions, "user_type IN ('user', 'support')", name: "user_type_check"
+    add_check_constraint :csv_variable_definitions, "log_type IN ('lettings', 'sales')", name: "log_type_check"
+    add_check_constraint :csv_variable_definitions, "year BETWEEN 2000 AND 2099", name: "year_check"
+  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: 2024_07_15_082338) do
+ActiveRecord::Schema[7.0].define(version: 2024_07_26_152326) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -46,6 +46,20 @@ ActiveRecord::Schema[7.0].define(version: 2024_07_15_082338) do
     t.index ["user_id"], name: "index_bulk_uploads_on_user_id"
   end
 
+  create_table "csv_variable_definitions", force: :cascade do |t|
+    t.string "variable", null: false
+    t.string "definition", null: false
+    t.string "log_type", null: false
+    t.string "user_type", null: false
+    t.integer "year", null: false
+    t.datetime "last_accessed"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.check_constraint "log_type::text = ANY (ARRAY['lettings'::character varying, 'sales'::character varying]::text[])", name: "log_type_check"
+    t.check_constraint "user_type::text = ANY (ARRAY['user'::character varying, 'support'::character varying]::text[])", name: "user_type_check"
+    t.check_constraint "year >= 2000 AND year <= 2099", name: "year_check"
+  end
+
   create_table "data_protection_confirmations", force: :cascade do |t|
     t.bigint "organisation_id"
     t.bigint "data_protection_officer_id"