json_delta

Description:

json delta

Introducing a mixin class that implements a toJsonDelta() method that serializes
the object to a JSON map of values of the changes in the object.
Usage #
final person = Person("John", "Doe", 30);
person.lastName = "Smith";
person.age = 31;
final delta = person.toJsonDelta(); // {"lastName": "Smith", "age": 31}
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Implement in your models #
An important note is that you call the saveJsonDeltaState() in the model's
constructor to set an initial state to compare against later.
class Person extends JsonSerializable with JsonDelta {
String firstName;
String lastName;
int age;

Person({
required this.firstName,
required this.lastName,
required this.age,
}) {
// Save the initial state of your object in the constructor
saveJsonDeltaState();
}

@override
Map<String, dynamic> toJson() {
return {
'firstName': firstName,
'lastName': lastName,
'age': age,
};
}
}
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Additional information #
This package is compatible with json_serializable
which facilitates your generation of JSON.