Dynamically set query params about ember-parachute HOT 5 OPEN

 // metadata query param is in this format: ?metadata=foo,123|bar,abc
  metadata: {
    defaultValue: [],
    refresh: true,
    serialize(value) {
      return value.map(v => `${v.key},${v.value}`).join('|');
    },
    deserialize(value = '') {
      let pairs = value.split('|') || [];

      return pairs.map(meta => {
        let [key, value] = meta.split(',');
        return { key, value };
      });
    }
  },

const QueryParams = new QueryParams(
  {
    inFilter: {
      defaultValue: null,
      refresh: true
    },
    notInFilter: {
      defaultValue: null,
      refresh: true
    }
  },
  true
);

export default Component.extend(QueryParams.Mixin, {
  init() {
    // Set `as` dynamically based on component attributes
    set(QueryParams, "queryParams.inFilter.as", this["filter-field"]);
    set(QueryParams, "queryParams.notInFilter.as", `not_in_${this["filter-field"]}`);
    //...
  }
});