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How to send data with POST requests in nestjs?

Now we just need to update the front end of our application to send a POST request to: which contains data that matches our message DTO. As I mentioned, we are using Ionic/Angular for this example, but you could execute this POST request using anything.

Why do we use providers in nestjs backend?

In that sense, it is a good idea to utilise “providers” in a NestJS application to do the heavy lifting for us. This way, a controller can make a request to a provider to do some work, rather than doing the work itself.

How to send data with a POST request?

A GET request is generally pretty simple, as all we are doing is making a generic request to a specific URL which will then return a response. In this tutorial, we are going to cover how we can send data from our Ionic application to the NestJS backend by using a POST request.

What’s the role of a controller in nestjs?

Like pages, we should aim to keep our controllers as “light” as possible. The main role of a controller is to “direct traffic” – we should not assign too much “work” to a controller, it should just listen for the incoming requests, outsource the work that needs to be done, and then send a response to the request.

How to create a relationship with typeorm in nestjs?

When using TypeORM, we can create it effortlessly with the use of decorators. Above, we use the @OneToOne() decorator. Its argument is a function that returns the class of the entity that we want to make a relationship with. The second decorator, the @JoinColumn(), indicates that the User entity owns the relationship.

How to create a relationship with Postgres with nestjs?

Creating relationships with Postgres and TypeORM 1. API with NestJS #1. Controllers, routing and the module structure 2. API with NestJS #2. Setting up a PostgreSQL database with TypeORM 3. API with NestJS #3. Authenticating users with bcrypt, Passport, JWT, and cookies 4. API with NestJS #4. Error handling and data validation 5.

How to create a new course in nestjs?

As the HTTP Post request to that endpoint should be used to create a new course dataset the data of the new course is passed in the request body. To get access to the request body a method parameter is introduced and the parameter decorator @Body () is used.