Why do we use DTOs in our APIs?

[@fadidib8516]

Great Channel, I love the deep dive of information.

[@donmikkodanm.olmillo8154]

Thank you for this video. It really helped me cleared about why we need to map it into DTOs. To put it on simple words, DTOs are much more flexible, and it is towards more on the client-side where the end user will modify or get the data. I've also heard from my mentors that you can also combine two domain models into one DTO but that is more on advanced one.

[@Codewrinkles]

Tes, on the DTO you can combine what ever you want. A DTO is basically an aggregate of different data that will be consumed by the clients of the API. Id doesn't have to match 1 to 1 with your domain model classes.

[@juliancavallo]

Thank you for this video man, I always had doubts about DTOs and now it's all clear. Keep up the good work!

[@Codewrinkles]

I'm glad it helped you clear up the reasons why we use DTOs.

[@godfather7695]

11:50 you may initialize ICollection by emty List or array and there is no possible nullref ex anymore

[@shaileshkuswaha1126]

Such a Amazing tutorial. Thank you

[@arunbm123]

really amazing informative Video..Thank u

[@alfonsdeda8912]

Hi, nice video! Two questions: -I created the service class that access the database with ef core, service's methods work with entities db, this service is called from the controller in api, so should i do mapping in service or controller? -if i want different dtos of same object from the same controller should i do two different endpoints? Thanks in advance.

[@ahmedalhallag3338]

The cleanest video on DTOs! A sub from me

[@Codewrinkles]

I'm glad. I'm not sure why but it seems there is a lot of confusion and misunderstanding regarding DTOs. I'm happy this video cleared up some aspects for you.

[@abdullokh_tolibjonov]

thanks a lot :) was vey useful dont stop :)

[@steve-o2198]

Using linq/list projection would be better and cleaner solution to mapping entities to dtos instead of doing loops.

[@abdulwahabkhan4316]

very well explained :)

[@krisztianistvancsato5940]

Nicely structured. Very clear. Great stuff. Thanks a lot! Just one question: Is there a way to connect my domain models and my dtos? So let's say, that I need to change some properties, for example in one of my domains. I'd like, if it automatically changed it in the related dto or it offered me the option. Thanks in advance.

[@Codewrinkles]

AutoMapper mapping is a one-off action. If something changes automatically in your domain model after the mapping, the change will not automatically be replicated into your DTO. If you want to achieve something like that you might need to work with evens and re-do the mapping when certain events are raised. I am not aware of anything else to achieve your goal.

[@krisztianistvancsato5940]

@@Codewrinkles I guess that can be an idea for a personal project, right? ;-) Once again, thank you very much for the excellent video.

[@vu5700]

Great video sir :)

[@royvethanayagam5888]

Superb.

[@Codewrinkles]

Thank you! Cheers!

[@TheNefelin]

is this project on GitHub?