ASP.NET MVC Core controller PATCH method for a Web API

Question

Given a database table Person holding the 3 colums Id, Firstname and Lastname.

How does the ASP.NET Core Web API MVC controller methods PATCH (modify only the lastname) look like when using a real DbContext.

I do not know how to implement it at all (and can't find a tutorial on that) so I ended up with the code below but do not know how to procede.

[HttpPatch("{id}")]
public void Patch(int id, [FromBody]Person value) 
{
  //is this the correct method signature?
  // what to do with dbContext in here?
}

I implemented that code without clue because I wasn't able to find a tutorial on that topic. So sharing my code is useless since I don't know how to write it at all. I edit the question an remove the dbContext.SaveChanges part. For more information please take a look at: stackoverflow.com/questions/39514203/… — monty
– monty, Commented Sep 16, 2016 at 5:58
if you need a feedback from the SO community then you have to spend some time with your series of questions and identify the items one by one according to the relevant order.then put those things one at a time.at that time you'll have a solution.otherwise this will be a another question without an answer. pretty sure about that. — Sampath
– Sampath, Commented Sep 16, 2016 at 6:31
From the previous question i extracted one snippet. I do not know how to implement that. So I asked how I should implement it. I can not give code I do not know. In the previous question it was suggested to split it up into multiple questions. This question is the first of multiple questions. Feel free to give me more hints I can edit this question so it fits your needs. — monty
– monty, Commented Sep 16, 2016 at 6:36
@Sampath: I added the code where my problem starts. Unfortunatly thats all I have. — monty
– monty, Commented Sep 16, 2016 at 6:44

n.prokhorov · Accepted Answer · 2016-09-16 09:53:12Z

2

So, PATCH-request, accordingly to the REST guidelines should provide the ability to partially modify the resource with only properties and values given in request. If you are confused about how to project partially changes on your DB - there is a simple answer. Update only those DB-fields, which are affected in PATCH request :).

There are some libraries, available in NuGet, which can help you to implement e PATCH in your API.Take a look at JsonPatch for example. There is a good sample from controller till DB.

UPD: Another one library

edited Sep 16, 2016 at 9:53

answered Sep 16, 2016 at 9:24

n.prokhorov

9307 silver badges13 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Omar Muscatello · Accepted Answer · 2017-08-02 09:58:10Z

2

If you have already implemented the client logic you can use SimplePatch (how to use in the link).

Disclaimer: I'm the author of the project.

answered Aug 2, 2017 at 9:58

Omar Muscatello

1,32114 silver badges27 bronze badges

Collectives™ on Stack Overflow

ASP.NET MVC Core controller PATCH method for a Web API

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related