salix/back/methods/collection/assignCollection.js

const UserError = require('vn-loopback/util/user-error');
module.exports = Self => {
    Self.remoteMethodCtx('assignCollection', {
        description: 'Assign a collection',
        accessType: 'WRITE',
        http: {
            path: `/assignCollection`,
            verb: 'POST'
        },
        returns: {
            type: ['object'],
            root: true
        },
    });

    Self.assignCollection = async(ctx, options) => {
        const userId = ctx.req.accessToken.userId;
        const myOptions = {userId};

        if (typeof options == 'object')
            Object.assign(myOptions, options);

        await Self.rawSql('CALL vn.collection_assign(?, @vCollectionFk)', [userId], myOptions);

        const [assignedCollection] = await Self.rawSql('SELECT @vCollectionFk');
        const {'@vCollectionFk': collectionFk} = assignedCollection;

        if (!collectionFk) throw new UserError('There are not picking tickets');
        await Self.rawSql('CALL vn.collection_printSticker(?, NULL)', [collectionFk], myOptions);

        return collectionFk;
    };
};