tethys.backend/app/Models/HashValue.ts

import {
	column,
	BaseModel,
    belongsTo,
    BelongsTo,  
	SnakeCaseNamingStrategy,
} from '@ioc:Adonis/Lucid/Orm';
import File from './File';

export default class HashValue extends BaseModel {
	public static namingStrategy = new SnakeCaseNamingStrategy();
	public static primaryKey = 'file_id, type';
	public static table = 'file_hashvalues';
    
    // static get primaryKey () {
    //     return 'type, value'
    //   }

    static get incrementing () {
        return false
      }

	// @column({
	// 	isPrimary: true,
	// })
	// public id: number;
    
     // Foreign key is still on the same model
    @column({})
	public file_id: number;

    @column({})
	public type: string;

	@column()
	public value: string;

    @belongsTo(() => File)
    public file: BelongsTo<typeof File>
  
}