Perform side effect after Json Patch

Question

Currently have an asp.net web api and implementing JSON Patch using AspNetCore.JsonPatch and want to perform a side effect if a certain action is done via Json patch?

E.g. patch request to update an array is done then triggers another function to be called to update a database.

Is there anything built in to do this?

Answer 1

There is no built in can do it, But you can use automapper to achieve it. Refer to this demo:

[HttpPatch("update/{id}")]
public Person Patch(int id, [FromBody]JsonPatchDocument<PersonDTO> personPatch)
{
    // Get our original person object from the database.
    PersonDatabase personDatabase = dbcontext.xx.GetById(id); 

    //Use Automapper to map that to our DTO object. 
    PersonDTO personDTO = _mapper.Map<PersonDTO>(personDatabase); 
    
    //Apply the patch to that DTO. 
    personPatch.ApplyTo(personDTO); 
    
    //Use automapper to map the DTO back ontop of the database object.      
    _mapper.Map(personDTO, personDatabase); 

    //Update our person in the database. 
    dbcontext.xx.Update(personDatabase); 

    return personDTO;
}