Parsing Airtable JSON into a Flutter Model

Facing a null-safety error when parsing PDF URLs from Airtable JSON in Flutter. Model example:

class PostModel {
  final String pdfUrl;
  PostModel.fromMap(Map m) : pdfUrl = m['data'][0]['link'];
}

I encountered a similar issue when parsing JSON from Airtable. In my case, the null safety error was due to not verifying the existence of intermediate keys before attempting to access their values. I addressed it by adding checks directly into the model constructor and employing Dart’s null-aware operators. This approach not only prevented device crashes but also made the code base more readable and robust. I suggest ensuring that every nested field is validated or replaced with a default value, which can help avoid such errors in production.