Is there a functional difference using __init__() and parse_obj() for creating a resource from a dictionary

[df65]

First of all thanks @nazrulworld for this library. A newbie question:

Can you advise if there is a difference using init() and parse_obj() for creating a resource (apart from the latter using a class method to create the object)?

In the code below, p1 & p2 seem identical. Does one have different validation and/or performance than the other?

p_obj = { "resourceType":"Patient", "id":"p1", "active":True, "name":[{"text": "Adam Smith"}], "birthDate": "1985-06-12"}
p1 = Patient.parse_obj(p_obj)
p2 = Patient(**p_obj)

[axelv]

Hi @df65,

fhir.resources is built on top of pydantic and I think your question is mainly about how pydantic models work.

This page probably answers your question: https://docs.pydantic.dev/usage/models/#helper-functions

parse_obj: this is very similar to the init method of the model, except it takes a dict rather than keyword arguments. If the object passed is not a dict a ValidationError will be raised.

[df65]

Thank you Axel.