encore-go-getting-started

my-app/
├── encore.app           # App configuration
├── go.mod               # Go module
└── hello/               # A service (package with API)
    └── hello.go         # API endpoints

// encore.app
{
    "id": "my-app"
}

// hello/hello.go
package hello
 
import "context"
 
type Response struct {
    Message string `json:"message"`
}
 
//encore:api public method=GET path=/hello
func Hello(ctx context.Context) (*Response, error) {
    return &Response{Message: "Hello, World!"}, nil
}

# Start the development server
encore run
 
# Your API is now available at http://localhost:4000

# Opens the local development dashboard
encore run
# Then visit http://localhost:9400

type GetUserParams struct {
    ID string
}
 
type User struct {
    ID   string `json:"id"`
    Name string `json:"name"`
}
 
//encore:api public method=GET path=/users/:id
func GetUser(ctx context.Context, params *GetUserParams) (*User, error) {
    return &User{ID: params.ID, Name: "John"}, nil
}

// db.go
package hello
 
import "encore.dev/storage/sqldb"
 
var db = sqldb.NewDatabase("mydb", sqldb.DatabaseConfig{
    Migrations: "./migrations",
})

-- hello/migrations/1_create_table.up.sql
CREATE TABLE items (
    id SERIAL PRIMARY KEY,
    name TEXT NOT NULL
);

import "encore.dev/storage/sqldb"
 
type Item struct {
    ID   int
    Name string
}
 
func getItem(ctx context.Context, id int) (*Item, error) {
    item, err := sqldb.QueryRow[Item](ctx, db, `
        SELECT id, name FROM items WHERE id = $1
    `, id)
    if err != nil {
        return nil, err
    }
    return item, nil
}