mbroersen / jeloquent

import Relation from "../Relation";

import ForeignKey from "../Field/ForeignKey";

export default class MorphOne extends Relation {

    constructor(model) {

        super(model);

    }

    get originalValue() {

        return this.getValueByParentKey('originalPrimaryKey');

    }

    get value() {

        return this.getValueByParentKey('primaryKey');

    }

    getRelationalFields(): Array<ForeignKey> {

        return [];

    }

    private getValueByParentKey(parentProperty): unknown {

        const type = this.$parent.className;

        const id = this.$parent[parentProperty];

        const idKeyName = `${this.name}_id`;

        const idTypeName = `${this.name}_type`;

        const lookUpKey = {};

        lookUpKey[idKeyName] = id;

        lookUpKey[idTypeName] = type;

        return this.model.find(lookUpKey);

    }

}