Knex.js with Postgres returns boolean fields as “0” or “1” instead of booleans



When I query with Knex.js a Postgres database boolean fields it returns the result as "0" or "1" (as strings) instead of the boolean values true and false.

Is there a way to make Knex/Postgres return boolean fields automatically as boolean values?

EDIT: I’m using Knex with node-postgres, here are my table definitions:

knex.schema
  .createTable('users_table', (table) => {
    table.increments('id');
    table.string('email').unique().notNullable();
    table.string('full_name').notNullable();
    table.timestamp('created_at').defaultTo(knex.fn.now()).notNullable();

    table.index('email', 'email_unique', 'unique');
  })
  .createTable('users_credentials', (table) => {
    table.increments('id');
    table.string('password').notNullable();
    table.boolean('is_activated').defaultTo(false).notNullable();
    table.integer('user_id').unsigned().references('users_table.id').notNullable();

    table.index('user_id', 'user_id_unique', 'unique');
  });

Answer

I needed to use the pg.types module:

import { types } from "pg";

types.setTypeParser(16, (value) => { // 16 is the type enum vaue of boolean
    return Boolean(parseInt(value));
});


Source: stackoverflow