Creating a database table for items for sale

cmd/api/api.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"log"
 	"myapp/internal/driver"
+	"myapp/internal/models"
 	"net/http"
 	"os"
 	"time"
@@ -31,6 +32,7 @@ type application struct {
 	infoLog  *log.Logger
 	errorLog *log.Logger
 	version  string
+	DB       models.DBModel
 }
 
 func (app *application) serve() error {
@@ -87,6 +89,7 @@ func main() {
 		config:   cfg,
 		infoLog:  infoLog,
 		errorLog: errorLog,
+		DB:       models.DBModel{DB: conn},
 	}
 
 	app.infoLog.Println("Connected to MariaDB")

cmd/api/handlers-api.go

@@ -5,6 +5,8 @@ import (
 	"myapp/internal/cards"
 	"net/http"
 	"strconv"
+
+	"github.com/go-chi/chi/v5"
 )
 
 type stripePayload struct {
@@ -65,3 +67,19 @@ func (app *application) GetPaymentIntent(w http.ResponseWriter, r *http.Request)
 	w.Header().Set("Content-Type", "application/json")
 	w.Write(out)
 }
+
+func (app *application) GetWidgetByID(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	widgetID, _ := strconv.Atoi(id)
+
+	widget, err := app.DB.GetWidget(widgetID)
+	if err != nil {
+		app.errorLog.Println(err)
+	}
+	out, err := json.MarshalIndent(widget, "", "    ")
+	if err != nil {
+		app.errorLog.Println(err)
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.Write(out)
+}

cmd/api/routes-api.go

@@ -19,5 +19,6 @@ func (app *application) routes() http.Handler {
 	}))
 
 	mux.Post("/api/payment-intent", app.GetPaymentIntent)
+	mux.Get("/api/widget/{id}", app.GetWidgetByID)
 	return mux
 }

cmd/web/main.go

@@ -6,6 +6,7 @@ import (
 	"html/template"
 	"log"
 	"myapp/internal/driver"
+	"myapp/internal/models"
 	"net/http"
 	"os"
 	"time"
@@ -35,6 +36,7 @@ type application struct {
 	errorLog      *log.Logger
 	templateCache map[string]*template.Template
 	version       string
+	DB            models.DBModel
 }
 
 func (app *application) serve() error {
@@ -95,6 +97,7 @@ func main() {
 		errorLog:      errorLog,
 		templateCache: tc,
 		version:       version,
+		DB:            models.DBModel{DB: conn},
 	}
 
 	app.infoLog.Println("Connected to MariaDB")

internal/models/models.go

@@ -1,6 +1,7 @@
 package models
 
 import (
+	"context"
 	"database/sql"
 	"time"
 )
@@ -32,3 +33,19 @@ type Widget struct {
 	CreatedAt      time.Time `json:"-"`
 	UpdatedAt      time.Time `json:"-"`
 }
+
+func (m *DBModel) GetWidget(id int) (Widget, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+
+	var widget Widget
+
+	query := `SELECT id, name FROM widgets WHERE id = ?`
+
+	row := m.DB.QueryRowContext(ctx, query, id)
+	err := row.Scan(&widget.ID, &widget.Name)
+	if err != nil {
+		return widget, err
+	}
+	return widget, nil
+}