allToJson method
Returns a serialized JSON structure of the model which also includes fields used by the database.
Implementation
@override
Map<String, dynamic> allToJson() {
return {
'fileName': fileName,
'url': url,
'contentType': contentType,
if (previewImage != null) 'previewImage': previewImage,
if (previewWidth != null) 'previewWidth': previewWidth,
if (previewHeight != null) 'previewHeight': previewHeight,
};
}