WIP Added model and migration for new table priceHistory.

app/migrations/20200120215830-add-priceHistory-table.js

@@ -0,0 +1,38 @@
+"use strict";
+
+module.exports = {
+  up: (queryInterface, Sequelize) => {
+    const tableFields = {
+      id: {
+        type: Sequelize.BIGINT,
+        autoIncrement: true,
+        allowNull: false,
+        primaryKey: true
+      },
+      realEstateId: {
+        type: Sequelize.BIGINT,
+        allowNull: false,
+        references: {
+          model: "RealEstate",
+          key: "id"
+        },
+        onUpdate: "CASCADE",
+        onDelete: "SET NULL"
+      },
+      price: Sequelize.REAL,
+      createdAt: {
+        type: Sequelize.DATE,
+        defaultValue: Sequelize.literal("NOW()")
+      },
+      updatedAt: {
+        type: Sequelize.DATE,
+        defaultValue: Sequelize.literal("NOW()")
+      }
+    };
+    return queryInterface.createTable("PriceHistory", tableFields);
+  },
+
+  down: queryInterface => {
+    return queryInterface.dropTable("PriceHistory", {});
+  }
+};