app/models/ApiResource.ts

import {Model} from "pinia-orm";

/**
 * Base class for resources that can be fetched from the API
 */
export class ApiResource extends Model {

    public static relations: Record<string, ApiResource>

    /**
     * Fix the 'Cannot stringify arbitrary non-POJOs' warning, meaning server can not parse the store
     *
     * @see https://github.com/vuex-orm/vuex-orm/issues/255#issuecomment-876378684
     */
    toJSON () {
        return { ...this }
    }

    /**
     * Is it a newly created entity?
     *
     * If it is, it means this entity does not exist in the data source and that it has a temporary id
     */
    public isNew(): boolean {
        return !this.id || (typeof this.id === 'string' && this.id.slice(0, 3) === 'tmp')
    }
}

export default ApiResource