added a todo-list app as well that is the best intro implementation o…

…f sequelize I can manage

todo-list/db/config/config.json

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+{
+ "production": {
+   "use_env_variable": "DATABASE_URL"
+ }
+}

todo-list/db/index.js

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+'use strict';
+
+const Sequelize = require('sequelize');
+const TodoModel = require('./models/todo.js');
+const UserModel = require('./models/user.js');
+
+const sequelize = new Sequelize({
+  dialect: 'sqlite',
+  store: ':memory'
+});
+
+const Todo = TodoModel(sequelize, Sequelize);
+const User = UserModel(sequelize, Sequelize);
+
+Todo.belongsTo(User, {
+  as: 'author'
+});
+
+User.hasMany(Todo, {
+  foreignKey: 'authorId'
+});
+
+module.exports = {
+  sequelize,
+  Sequelize,
+  Todo,
+  User
+}

todo-list/db/models/todo.js

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+'use strict';
+
+module.exports = (sequelize, DataTypes) => {
+  const Todo = sequelize.define('todos', {
+    title: {
+      type: DataTypes.STRING,
+      allowNull: false
+    },
+    content: {
+      type: DataTypes.TEXT
+    }
+  });
+
+  return Todo;
+};

todo-list/db/models/user.js

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+'use strict';
+
+module.exports = (sequelize, DataTypes) => {
+  const User = sequelize.define('user', {
+    firstName: {
+      type: DataTypes.STRING,
+      allowNull: false
+    },
+    lastName: {
+      type: DataTypes.STRING,
+      allowNull: false
+    },
+    email: {
+      type: DataTypes.STRING,
+      allowNull: false,
+      unique: true
+    }
+  });
+
+  return User;
+};