Wembley Leach wemgl
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| // package declaration and imports omitted for brevity | |
| type key string | |
| const ( | |
| hostKey = key("hostKey") | |
| usernameKey = key("usernameKey") | |
| passwordKey = key("passwordKey") | |
| databaseKey = key("databaseKey") | |
| ) |
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| func configDB(ctx context.Context) (*mongo.Database, error) { | |
| uri := fmt.Sprintf(`mongodb://%s:%s@%s/%s`, | |
| ctx.Value(usernameKey).(string), | |
| ctx.Value(passwordKey).(string), | |
| ctx.Value(hostKey).(string), | |
| ctx.Value(databaseKey).(string), | |
| ) | |
| client, err := mongo.NewClient(options.Client().ApplyURI(uri)) | |
| if err != nil { | |
| return nil, fmt.Errorf("todo: couldn't connect to mongo: %v", err) |
wemgl
/ createTask.go
Last active
February 4, 2019 01:56
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| res, err := db.Collection(collName).InsertOne(ctx, bson.D{ | |
| {"task", t.Task}, | |
| {"createdAt", primitive.DateTime(timeMillis(t.CreatedAt))}, | |
| {"modifiedAt", primitive.DateTime(timeMillis(t.ModifiedAt))}, | |
| }) | |
| if err != nil { | |
| return "", fmt.Errorf("createTask: task for to-do list couldn't be created: %v", err) | |
| } | |
| return res.InsertedID.(primitive.ObjectID).Hex(), nil |
wemgl
/ updateTask.go
Last active
February 4, 2019 01:57
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| var t todo | |
| idDoc := bson.D{{"_id", objectIDS}} | |
| err = db.Collection(collName).FindOne(ctx, idDoc).Decode(&t) | |
| if err != nil { | |
| return "", fmt.Errorf("updateTask: couldn't decode task from db: %v", err) | |
| } | |
| var task string | |
| fmt.Println("old task:", t.Task) | |
| fmt.Print("updated task: ") | |
| for input.Scan() { |
wemgl
/ deleteTask.go
Last active
February 4, 2019 01:58
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| objectIDS, err := primitive.ObjectIDFromHex(id) | |
| if err != nil { | |
| return 0, fmt.Errorf("deleteTask: couldn't convert to-do ID from input: %v", err) | |
| } | |
| idDoc := bson.D{{"_id", objectIDS}} | |
| res, err := db.Collection(collName).DeleteOne(ctx, idDoc) | |
| if err != nil { | |
| return 0, fmt.Errorf("deleteTask: couldn't delete to-do from db: %v", err) | |
| } |
wemgl
/ readTasks.go
Last active
February 4, 2019 01:58
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| c, err := db.Collection(collName).Find(ctx, bson.D{}) | |
| if err != nil { | |
| return fmt.Errorf("readTasks: couldn't list all to-dos: %v", err) | |
| } | |
| defer c.Close(ctx) | |
| tw := tabwriter.NewWriter(os.Stdout, 24, 2, 4, ' ', tabwriter.TabIndent) | |
| _, _ = fmt.Fprintln(tw, "ID\tCreated At\tModified At\tTask\t") | |
| for c.Next(ctx) { | |
| elem := &bson.D{} | |
| if err = c.Decode(elem); err != nil { |
wemgl
/ createSimpleServer.go
Last active
March 10, 2019 13:59
main.go for the simple-server medium post
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| func main() { | |
| mux := http.NewServeMux() | |
| mux.Handle("/public/", logging(public())) | |
| mux.Handle("/", logging(index())) | |
| port, ok := os.LookupEnv("PORT") | |
| if !ok { | |
| port = "8080" | |
| } |
wemgl
/ createSimpleMiddleware.go
Created
March 10, 2019 14:00
Example of creating a simple middleware function
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| // logging is middleware for wrapping any handler we want to track response | |
| // times for and to see what resources are requested. | |
| func logging(next http.Handler) http.Handler { | |
| return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | |
| start := time.Now() | |
| req := fmt.Sprintf("%s %s", r.Method, r.URL) | |
| log.Println(req) | |
| next.ServeHTTP(w, r) | |
| log.Println(req, "completed in", time.Now().Sub(start)) | |
| }) |
wemgl
/ createSimpleIndexHandler.go
Last active
March 10, 2019 14:29
Example of parsing templates and handling HTTP requests
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| // templates references the specified templates and caches the parsed results | |
| // to help speed up response times. | |
| var templates = template.Must(template.ParseFiles("./templates/base.html", "./templates/body.html")) | |
| // index is the handler responsible for rending the index page for the site. | |
| func index() http.Handler { | |
| return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | |
| b := struct { | |
| Title template.HTML | |
| BusinessName string |
wemgl
/ createSimpleServerBaseTemplate.html
Created
March 10, 2019 14:38
Example of simple HTML templates in Go
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| {{define "base"}} | |
| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" | |
| content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <link rel="shortcut icon" type="image/x-icon" href="/public/assets/images/favicon.ico"> | |
| <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Work+Sans:400,500,600,700"> |
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