Bookshelf hash IDs

example.js

'use strict';

const _ = require('lodash');
const bookshelf = require('../config/bookshelf');
const hasher = require('../utils/hasher');

require('./thing');

let Example = Bookshelf.model.extend({
  tableName: 'examples',
  
  things() {
    // One-to-many
    return this
      .hasMany('Thing')
      .query(qb => qb.orderBy('name', 'asc'))
    ;
  },
  
  // Integer IDs to hashes
  // e.g. 8 => "693da7d7"
  parse: function(attrs) {
    return _.reduce(Base.prototype.parse.call(this, attrs), (memo, val, key) => {
      if (key === 'id') {
        memo[key] = hasher.encode(val);
      } else {
        memo[key] = val;
      }
      return memo;
    }, {});
  },
  // Hash IDs to integers
  // e.g. "693da7d7" => 8
  format: function(attrs) {
    return _.reduce(Base.prototype.format.call(this, attrs), (memo, val, key) => {
      if (key === 'id') {
        memo[key] = hasher.decode(val)[0];
      } else {
        memo[key] = val;
      }
      return memo;
    }, {});
  }
});

module.exports = bookshelf.model('Example', Example);