fromJson static method

Top? fromJson(dynamic value)

Returns a new Top instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static Top? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      requiredKeys.forEach((key) {
        assert(json.containsKey(key), 'Required key "Top[$key]" is missing from JSON.');
        assert(json[key] != null, 'Required key "Top[$key]" has a null value in JSON.');
      });
      return true;
    }());

    return Top(
      end: mapValueOfType<String>(json, r'end'),
      models: TopModels.fromJson(json[r'models']),
      products: TopProducts.fromJson(json[r'products']),
      range: mapValueOfType<String>(json, r'range'),
      scope: Scope.fromJson(json[r'scope']),
      start: mapValueOfType<String>(json, r'start'),
      topPages: Breakdown.fromJson(json[r'topPages']),
      topReferrers: Breakdown.fromJson(json[r'topReferrers']),
      topSources: Breakdown.fromJson(json[r'topSources']),
    );
  }
  return null;
}