views package, add, update in userStore, user model rules, add todo.md

data/psql.go

@@ -33,6 +33,7 @@ func UsePSQL() {
 	// log.Print(u)
 	u1 := model.NewUser(3, 19, "paul", "newman", "PdsN@FDKML.COM")
 	store.Update(16, u1)
+	log.Print(store.Get(1))
 }
 
 func sqlExec(db *sql.DB, s string) {
@@ -52,7 +53,7 @@ func createUserTable(db *sql.DB) {
 type Store interface {
 	CreateTable()
 	Add(i interface{})
-	Get()
+	Get(id int) model.User
 	Find(id int)
 	Update(id int, i interface{})
 	Delete(id int)

data/userQueries.go

@@ -11,6 +11,12 @@ const (
 	last_name TEXT,
 	email TEXT UNIQUE NOT NULL)
 	`
+
+	// QueryGet is the SQL command used to retrieve a user from the table
+	QueryGet = `
+	SELECT * id FROM users WHERE id=$1;
+	`
+
 	// QueryInsert is the SQL command used to insert a user in the table.
 	// Returning the new ID.
 	QueryInsert = `

data/userStore.go

@@ -17,6 +17,21 @@ func NewUserStore(db *sql.DB) UserStore {
 	return UserStore{db: db}
 }
 
+// Get retrieves the user identified by 'id' from database
+func (us UserStore) Get(uid int) model.User {
+	var id, age int
+	var firstName,lastName,email string
+	row := us.db.QueryRow(QueryGet, uid)
+	switch err:=row.Scan(&id,&age,&firstName,&lastName,&email); err {
+	case sql.ErrNoRows:
+		log.Println("No entry returned")	
+	case nil:
+		return model.NewUser(id, age,firstName,lastName,email)
+	default:
+		log.Fatal(err)
+	}
+}
+
 // Add inserts a user in the database.
 func (us UserStore) Add(u model.User) {
 	id := 0