fromJson static method

Poll? fromJson(dynamic value)

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

Implementation

// ignore: prefer_constructors_over_static_methods
static Poll? 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 "Poll[$key]" is missing from JSON.');
        assert(json[key] != null, 'Required key "Poll[$key]" has a null value in JSON.');
      });
      return true;
    }());

    return Poll(
      custom: mapCastOfType<String, Object>(json, r'Custom')!,
      allowAnswers: mapValueOfType<bool>(json, r'allow_answers')!,
      allowUserSuggestedOptions: mapValueOfType<bool>(json, r'allow_user_suggested_options')!,
      answersCount: mapValueOfType<int>(json, r'answers_count')!,
      createdAt: mapDateTime(json, r'created_at', r'')!,
      createdBy: UserObject.fromJson(json[r'created_by']),
      createdById: mapValueOfType<String>(json, r'created_by_id')!,
      description: mapValueOfType<String>(json, r'description')!,
      enforceUniqueVote: mapValueOfType<bool>(json, r'enforce_unique_vote')!,
      id: mapValueOfType<String>(json, r'id')!,
      isClosed: mapValueOfType<bool>(json, r'is_closed'),
      latestAnswers: PollVote.listFromJson(json[r'latest_answers']),
      latestVotesByOption: json[r'latest_votes_by_option'] == null
        ? const {}
          : PollVote.mapListFromJson(json[r'latest_votes_by_option']),
      maxVotesAllowed: mapValueOfType<int>(json, r'max_votes_allowed'),
      name: mapValueOfType<String>(json, r'name')!,
      options: PollOption.listFromJson(json[r'options']),
      ownVotes: PollVote.listFromJson(json[r'own_votes']),
      updatedAt: mapDateTime(json, r'updated_at', r'')!,
      voteCount: mapValueOfType<int>(json, r'vote_count')!,
      voteCountsByOption: mapCastOfType<String, int>(json, r'vote_counts_by_option')!,
      votingVisibility: mapValueOfType<String>(json, r'voting_visibility'),
    );
  }
  return null;
}