readValue function
Reads a value from a JSON object using the provided key.
This helper provides a consistent way to access values from JSON objects across different content providers.
Example:
final json = {'title': 'My Post'};
final title = readValue(json, 'title');
Returns null if:
- The input is null
- The key does not exist
- The value is null
Implementation
Object? readValue(dynamic json, String key) {
return VyuhBinding.instance.content.provider.fieldValue(key, json);
}