change db from sqlite3 to postgresql

cmd/frontend/UpSearch.go

@@ -9,29 +9,32 @@ import (
 // Enpoint that returns a list of articles given search terms in the post
 // request of a search form. Uses the content template.
 func (app *App) UpSearch(w http.ResponseWriter, req *http.Request) {
-    // construct search query
-    searchTerms := req.FormValue("search")
-    if searchTerms == "" {
-        app.Index(w, req)
-        return
-    }
-    
-    // get articles
-    articles, err := app.articles.Search(searchTerms)
-    if err != nil {
-        // treat as no result
-        //http.Error(w, err.Error(), http.StatusInternalServerError)
-        return
-    }
+	// construct search query
+	searchTerms := req.FormValue("search")
+	if searchTerms == "" {
+		app.Index(w, req)
+		return
+	}
 
-    // convert to viewmodel
-    articleVMs := make([]*model.ArticleViewModel, 0, len(articles))
-    for _, a := range articles {
-        articleVMs = append(articleVMs, a.ViewModel())
-    }
-    
-    // render template
-    t := template.Must(template.ParseFiles("assets/templates/article.html"))
-    err = t.ExecuteTemplate(w, "content", articleVMs)
-    if err != nil { http.Error(w, "Failed to render template", http.StatusInternalServerError); return; }
+	// get articles
+	articles, err := app.articles.Search(searchTerms)
+	if err != nil {
+		// treat as no result
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	// convert to viewmodel
+	articleVMs := make([]*model.ArticleViewModel, 0, len(articles))
+	for _, a := range articles {
+		articleVMs = append(articleVMs, a.ViewModel())
+	}
+
+	// render template
+	t := template.Must(template.ParseFiles("assets/templates/article.html"))
+	err = t.ExecuteTemplate(w, "content", articleVMs)
+	if err != nil {
+		http.Error(w, "Failed to render template", http.StatusInternalServerError)
+		return
+	}
 }

cmd/frontend/main.go

@@ -3,13 +3,11 @@ package main
 import (
 	"crowsnest/internal/model/database"
 	"database/sql"
-	"errors"
 	"log"
 	"net/http"
 	"os"
 
 	_ "github.com/lib/pq"
-	_ "github.com/mattn/go-sqlite3"
 )
 
 type App struct {
@@ -19,24 +17,17 @@ type App struct {
 func main() {
 	// collect environement variables
 	databaseURL := os.Getenv("DB_URL")
-	dbDriver := os.Getenv("DB_DRIVER")
 
 	// connect to database
-	var db *sql.DB
-	var err error
-	switch {
-	case dbDriver == "sqlite3":
-		db, err = sql.Open("sqlite3", databaseURL)
-		if err != nil {
-			log.Fatal(err)
-		}
-	default:
-		log.Fatal(errors.New("given DB_DRIVER is not supported"))
+	db, err := sql.Open("postgres", databaseURL)
+	if err != nil {
+		log.Fatal(err)
 	}
+	defer db.Close()
 
 	// define app
 	app := &App{
-		articles: &database.ArticleModel{DB: db, DbDriver: dbDriver},
+		articles: &database.ArticleModel{DB: db},
 	}
 
 	// start web server