Link.fromJson constructor

Link.fromJson(dynamic data)

Create a new link from data (ie. a decoded JSON object or a href link).

data is allowed to be Map<String, dynamic> (containing link attributes) or String (containing only a href part of a link).

Throws FormatException if cannot parse data.

Implementation

factory Link.fromJson(dynamic data) {
  try {
    if (data is Map<String, dynamic>) {
      return Link(
        // get required fields (throws if data is unavailable or invalid)
        href: Uri.parse(data['href'] as String),

        // optional fields (null if data is unavailable, throws if invalid)
        rel: data['rel'] as String?,
        type: data['type'] as String?,
        hreflang: data['hreflang'] as String?,
        title: data['title'] as String?,
        length: data['length'] as int?,
      );
    } else if (data is String) {
      return Link(href: Uri.parse(data));
    }
    throw FormatException('Cannot create a link from $data');
  } on FormatException {
    rethrow;
  } catch (e) {
    throw FormatException('Cannot create a link', e);
  }
}