dm-tools/.templates/pg/src/database/model/student.model.ts

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import {Sequelize, DataTypes, Model} from 'sequelize';

import assert from 'node:assert/strict';

// Define Student data model.
export class Student extends Model {
  // declaring fileds are optional, more for documenting was db columns are defined.
  // NOTE: removing 'declare' will cause shadowing for getter/setter.
  declare id: number;
  declare name: string;
  declare surname: string;
  declare email: string;
}

export function initStudentModel(sequelize: Sequelize) {
  // Define Student model properties.
  // Columns: id, createdAt, updatedAt will be automatically created.
  // Database table name is defined explicitly.
  Student.init(
    {
      name: {
        type: DataTypes.STRING,
        allowNull: false,
      },
      surname: {
        type: DataTypes.STRING,
        allowNull: false,
      },
      email: {
        type: DataTypes.STRING,
        allowNull: false,
      },
    },
    {
      sequelize,
      tableName: 'students',
    },
  );
}

export async function createStudentTable(sequelize: Sequelize) {
  // Drop all table if exist, create all tables.
  // Calling sync always made the database table match the model.
  await sequelize.sync({force: true});

  // // All models are available through "sequelize.models".
  assert(sequelize.models.Student == Student);

  // // Insert values into Students table.
  await Student.create({
    name: 'Rajinder',
    surname: 'Yadav',
    email: 'ry@home.net',
  });
  await Student.create({
    name: 'Tammy',
    surname: 'Trinh',
    email: 'tammy@test.ca',
  });
  await Student.create({
    name: 'Shivaji',
    surname: 'Yadav',
    email: 'shivaji@dev.com',
  });
}

export async function getAllStudents() {
  // findAll() will accept the following argument to filter columns.
  // { attributes: ['id', 'name', 'surname'] }
  const students = await Student.findAll();
  students.forEach((s) => console.log(s.dataValues));
}