databaseutils/databaseutils.go

package databaseutils

import (
  "database/sql"
  _ "github.com/go-sql-driver/mysql"
  "fmt"
)

type DBUtils struct {
  User string
  Password string
  Host string
  Database string
  Handle *sql.DB
}

// db := dbUtils{"root", "root", "127.0.0.1", "gotest"}

func (dbUtil *DBUtils) Connect() {
  var err error
  dbUtil.Handle, err = sql.Open("mysql", dbUtil.User + ":" + dbUtil.Password + "@tcp(" + dbUtil.Host + ")/" + dbUtil.Database)
  if err != nil {
    panic(err.Error()) // Just for example purpose. You should use proper error handling instead of panic
  }

  // Open doesn't open a connection. Validate DSN data:
  err = dbUtil.Handle.Ping()
  if err != nil {
    panic(err.Error()) // proper error handling instead of panic in your app
  }
}

func (dbUtil DBUtils) Close() {
  dbUtil.Handle.Close()
}

func (dbUtil DBUtils) GetString(what string, from string, where string, wherevalue string) string {
  var username string

  rows, err := dbUtil.Handle.Query("SELECT " + what + " FROM " + from + " WHERE " + where + " = " + wherevalue)
  if err != nil {
  	fmt.Println(err)
  }
  defer rows.Close()
  for rows.Next() {
  	err := rows.Scan(&username)
  	if err != nil {
  		fmt.Println(err)
  	}
  	fmt.Println(username)
  }
  err = rows.Err()
  if err != nil {
  	fmt.Println(err)
  }

  return username















/*

  stmtOut, err := dbUtil.Handle.Prepare("SELECT " + what + " FROM " + from + " WHERE " + where + " = " + wherevalue)
  if err != nil {
      panic(err.Error()) // proper error handling instead of panic in your app
  }

  fmt.Printf("%v", stmtOut)

  err = stmtOut.QueryRow(0).Scan(&username)

  fmt.Printf("%v", username)

  return username*/
}