docker_keystone/schema/productfeatures.js

const { Text, Relationship } = require('@keystonejs/fields');
const { AutoIncrement } = require('@keystonejs/fields-auto-increment');

module.exports = {
    fields: {
        productfeatures_id:  { type: AutoIncrement, isRequired: true, label: 'productfeatures' },
        features_id: { type: Relationship, ref: 'features', many: true, label: 'features' },
        featuresval_id: { type: Relationship, ref: 'featuresval', many: false, label: 'featuresval' },
        article_id: { type: Relationship, ref: 'items', many: false, label: 'article' },
        custom_value: { type: Text, label: 'custom_value' },
    }, label: 'Productfeature'//, plural: 'Productfeaturess'
};