@dwp/govuk-casa/dist/middleware/gather-fields.js

A framework for building GOVUK Collect-And-Submit-Applications

"use strict";
// Gather the field data from `req.body` into the current JourneyContext
// - Store in the current session
// - Update the user's journey context with the new data
// - Remove validation date of JourneyContext so it can re-evaluted
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const JourneyContext_js_1 = __importDefault(require("../lib/JourneyContext.js"));
const constants_js_1 = require("../lib/constants.js");
/**
 * @typedef {import("../lib/field").PageField} PageField
 * @access private
 */
/**
 * Gather the field data from `req.body` into the current JourneyContext
 *
 * - Store in the current session
 * - Update the user's journey context with the new data
 * - Remove validation date of JourneyContext so it can re-evaluted
 *
 * @param {object} obj Options
 * @param {string} obj.waypoint Waypoint
 * @param {PageField[]} [obj.fields] Fields. Default is `[]`
 * @returns {Array} Array of middleware
 */
exports.default = ({ waypoint, fields = [] }) => [
    (req, res, next) => {
        // Store a copy of the journey context before modifying it. This is useful
        // for any comparison work that may be done in subsequent middleware.
        req.casa.archivedJourneyContext = JourneyContext_js_1.default.fromContext(req.casa.journeyContext, req);
        // Ignore data for any non-persistent fields
        // ESLint disabled as `fields`, `i` and `name` are dev-controlled
        /* eslint-disable security/detect-object-injection */
        const persistentBody = Object.create(null);
        for (let i = 0, l = fields.length; i < l; i++) {
            if (fields[i].meta.persist &&
                fields[i].getValue(req.body) !== undefined) {
                persistentBody[fields[i].name] = fields[i].getValue(req.body);
            }
        }
        /* eslint-enable security/detect-object-injection */
        // Update data and validation context in the current request, and store.
        // The validation state is removed here because we must assume the gathered
        // data is invalid until proven otherwise when the validation step is run.
        req.casa.journeyContext.setDataForPage(waypoint, persistentBody);
        req.casa.journeyContext.removeValidationStateForPage(waypoint);
        JourneyContext_js_1.default.putContext(req.session, req.casa.journeyContext, {
            userInfo: {
                casaRequestPhase: constants_js_1.REQUEST_PHASE_GATHER,
            },
        });
        next();
    },
];
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