Adonis.js Seed Example (without factory)

seeder.ts

import faker from 'faker'
import { sample } from 'lodash'
import { DateTime } from 'luxon'

import BaseSeeder from '@ioc:Adonis/Lucid/Seeder'

import User from 'App/Models/User'
import Transaction from 'App/Models/Transaction'
import TransactionCategory from 'App/Models/TransactionCategory'
import TransactionSubCategory from 'App/Models/TransactionSubCategory'
import TransactionType from 'App/Models/TransactionType'

export default class UserSeeder extends BaseSeeder {
  protected async getRandomModelId(model) {
    const records = await model.all()
    const randomId = sample(records)
    if (!randomId) throw new Error('Missing transaction category.')
    return randomId.id
  }

  public async run() {
    const user = await User.firstOrCreate({
      email: '[email protected]',
      password: 'topsecret',
      name: 'Regular User',
      isAdmin: false,
    })

    const transactionsVector = await Promise.all(
      Array.from({ length: 350 }).map(async () => ({
        userId: user.id,
        date: DateTime.fromJSDate(faker.date.recent()),
        amount: Number(faker.finance.amount(80, 8000, 2)),
        transactionTypeId: await this.getRandomModelId(TransactionType),
        transactionCategoryId: await this.getRandomModelId(TransactionCategory),
        transactionSubCategoryId: await this.getRandomModelId(TransactionSubCategory),
      }))
    )

    await Transaction.createMany(transactionsVector)
  }
}