NestJs and TypeORM basics—create CRUD API [part. 2.]

In the second part of nestJs tutorial, I will show you how to use real database instead of in memory store. In this lesson, we will use the postgres database together with the typeORM. I will teach you how to run a local instance of postgres using docker-compose, how to connect to it from nestJs app and finally, we will learn all the implementation of CRUD operations in typeORM.

0:00 Introduction
0:31 How to run postgres on local machine
03:08 How to install typeorm in nestJs project
03:47 How to set typeorm config
06:06 How to create typeorm entity
09:48 How to create one-to-many relation in typeorm
13:09 How to use typeorm repository in nestJs app
14:46 How to implement CRUD operations in typeorm

[AliAliOxenFree]

another excellent video. These deserve tens of thousands of views. Your explanation really simplifies things that would be challenging to a beginner. I have made many tables with various relationships, and i still learned a lot from this tutorial.

[AliAliOxenFree]

wow thunder client is spectacular! the amount of time wasted per day/week/year alt-tabbing to postman or swagger or whatever.. and neither of those display the database queries. Thank you so much i am only on the second video and i have learned SO much

[DevZyzer]

I am really have trouble with the database connection

Getting the error below

[Nest] 87748 - ERROR [TypeOrmModule] Unable to connect to the database. Retrying (6)...
error: role "postgres" does not exist

[thomaschristensen]

Hi Piotr. I have a similar setup like your One-To-Many relationship between Recipe and Ingedients. How would you go about updating the ingedients of the Recipe? Is there an easy way to do with now that the cascade: true is set? I get the following error whenever i try to update the ingedients: ""ERROR [ExceptionsHandler] Cannot query across one-to-many for property tags""