1592785085350-CreateCategories.ts

import { MigrationInterface, QueryRunner, Table } from 'typeorm';

export default class CreateCategories1592785085350
  implements MigrationInterface {
  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.createTable(
      new Table({
        name: 'categories',
        columns: [
          {
            name: 'id',
            type: 'uuid',
            isPrimary: true,
            generationStrategy: 'uuid',
            default: 'uuid_generate_v4()',
          },
          {
            name: 'title',
            type: 'varchar',
            isUnique: true,
          },
          {
            name: 'created_at',
            type: 'timestamp',
            default: 'now()',
          },
          {
            name: 'updated_at',
            type: 'timestamp',
            default: 'now()',
          },
        ],
      }),
    );
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.dropTable('categories');
  }
}

1592785134812-CreateTransactions.ts

import {
  MigrationInterface,
  QueryRunner,
  Table,
  TableForeignKey,
} from 'typeorm';

export default class CreateTransactions1592785134812
  implements MigrationInterface {
  public async up(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.createTable(
      new Table({
        name: 'transactions',
        columns: [
          {
            name: 'id',
            type: 'uuid',
            isPrimary: true,
            generationStrategy: 'uuid',
            default: 'uuid_generate_v4()',
          },
          {
            name: 'title',
            type: 'varchar',
          },
          {
            name: 'value',
            type: 'numeric',
          },
          {
            name: 'type',
            type: 'varchar',
          },
          {
            name: 'category_id',
            type: 'uuid',
            isNullable: true,
          },
          {
            name: 'created_at',
            type: 'timestamp',
            default: 'now()',
          },
          {
            name: 'updated_at',
            type: 'timestamp',
            default: 'now()',
          },
        ],
      }),
    );

    await queryRunner.createForeignKey(
      'transactions',
      new TableForeignKey({
        name: 'TransactionCategory',
        columnNames: ['category_id'],
        referencedColumnNames: ['id'],
        referencedTableName: 'categories',
        onDelete: 'SET NULL',
        onUpdate: 'CASCADE',
      }),
    );
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.dropForeignKey('transactions', 'TransactionCategory');

    await queryRunner.dropTable('transactions');
  }
}

ormconfig.json

{
  "type": "postgres",
  "host": "localhost",
  "port": 5432,
  "username": "postgres",
  "password": "docker",
  "database": "gostack_desafio06",
  "entities": ["./src/models/*.ts"],
  "migrations": ["./src/database/migrations/*.ts"],
  "cli": {
    "migrationsDir": "./src/database/migrations"
  }
}