Stream MP3 file MVC3 - asp.net-mvc-3

I am trying to stream a file using the audio HTML5 tag. I have put the Controller action to return a FileStream and attached it to the src for the audio. However, the content is not loading into the audio tag and doesn't play when I press the default play button. I know the controller is working when I access the src directly. However, it doesn't work in the HTML5 audio tag.
Can anyone tell me what I am missing?

You should not return a FileStream, you should return a FileStreamResult or a FilePathResult from your controller action, like this:
public class HomeController : Controller
{
public ActionResult Index()
{
return View();
}
public ActionResult MyAudio()
{
var file = Server.MapPath("~/app_data/test.mp3");
return File(file, "audio/mp3");
}
}
and the ~/Views/Home/Index.cshtml view:
#{
Layout = null;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Sound Sample</title>
</head>
<body>
<article class="audio">
<header>
<h2>Some audio</h2>
</header>
<audio controls>
<source src="#Url.Action("myaudio")" type="audio/mp3" />
<p>Your browser does not support HTML 5 audio element</p>
</audio>
</article>
</body>
</html>

Related

Spring + Thymeleaf + Dropzone

I might sound strange with this question but I'm very new into those three technologies - Spring, Thymeleaf and Dropzone.
I am currently trying to get a html page resulting from a response from my Spring Controller + Thymeleaf with a request from a Dropzone file upload.
So my Controller receive the file from dropzone, reads it, apply some parsing and return the result as a html page, like a report.
It works as expected if I use a simple form like the one available in Spring tutorial site.
But when I put Dropzone I simply can't get the result from this html page.
I'll leave here my upload html (I've been trying to get the result and print into a div, without success):
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>My upload form with Dropzone</title>
<link rel="stylesheet" href="https://unpkg.com/dropzone#5/dist/min/dropzone.min.css" type="text/css" />
<script src="https://unpkg.com/dropzone#5/dist/min/dropzone.min.js"></script>
<script>
Dropzone.options.myDropZone = { // The camelized version of the ID of the form element
// The configuration we've talked about above
autoProcessQueue: false,
uploadMultiple: false,
parallelUploads: 1,
maxFiles: 1,
paramName: "file",
// The setting up of the dropzone
init: function() {
var myDropzone = this;
var submitButton = document.getElementById("btnStartUpload");
submitButton.addEventListener("click", function (e) {
e.preventDefault();
e.stopPropagation();
myDropzone.processQueue();
});
this.on("sendingmultiple", function(file, xhr, form) {
form.append("file", file);
});
this.on("success", function(file, response) {
console.log(response);
$(".result").html(response);
});
}
}
</script>
</head>
<body>
<div id="dropzone">
<form id="myDropZone" class="dropzone" th:action="#{/upload}" method="POST" enctype="multipart/form-data">
<div class="previews"></div>
<button id="btnStartUpload">Submit file!</button>
</form>
</div>
<div id="result" class="result"></div>
</body>
My Controller:
#PostMapping(value = "/upload", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public String uploadFile (#RequestParam("file") MultipartFile file, ModelMap model)
{
try
{
// parse file and insert a collection into attribute, to be used in the 'result' page.
model.addAttribute("fields", /*collection*/);
return "result";
}
catch (IOException e)
{
e.printStackTrace();
return "failed";
}
}
And then my result html:
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>My result page</title>
</head>
<body>
<table>
<tr>
<td>F1</td>
<td>F2</td>
<td>F3</td>
</tr>
<th:block th:each="field : ${fields}">
<tr>
<td th:text="${field.name}"></td>
<td th:text="${field.value}"></td>
<td th:text="${field.description}"></td>
</tr>
</th:block>
</table>
</body>
</html>

String is null on Thymeleaf page after adding to model

My controller:
#Controller
public class IndexController {
#RequestMapping(value = "/index")
public String index(Model model) {
model.addAttribute("message", "Hello World!");
return "index";
}
}
My page:
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset = "ISO-8859-1" />
<link href = "css/styles.css" rel = "stylesheet"/>
<title>Spring Boot Application</title>
</head>
<body>
<h4>Spring boot.</h4>
<p th:utext="${message}"></p>
</body>
</html>
Upon loading and rendering, this HTML appears; how do I get the message to appear?
<!DOCTYPE html>
<html>
<head>
<meta charset = "ISO-8859-1" />
<link href = "css/styles.css" rel = "stylesheet"/>
<title>Spring Boot Application</title>
</head>
<body>
<h4>Spring boot.</h4>
<p></p>
</body>
</html>
Ensure you have imported the thymeleaf dependency into your project.
Use th:text="${message}"
Method in IndexController is never being called, because this:
#RequestMapping(value = "/index")
Should be this:
#RequestMapping(value = "/")

Can a _Layout.cshtml have a controller

I want to add navigation from database in _Layout.cshtml. I've created a controller for this and create _Layout.cshtml as a list view but its not working
This is my view code
#model IEnumerable<ITM_College.Models.field_tbl>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>#ViewBag.Title - My ASP.NET Application</title>
#Styles.Render("~/Content/css")
#Scripts.Render("~/bundles/modernizr")
</head>
<body>
<nav>
<ul>
#foreach (var item in Model)
{
<li> #Html.DisplayFor(modelItem => item.Field_Name)</li>
}
</ul>
</nav>
Controller code
public class SharedController : Controller
{
ITMCollegeEntities db = new ITMCollegeEntities();
// GET: Shared
[ChildActionOnly]
public ActionResult _Layout()
{
var li = db.field_tbl.ToList();
return View(li);
}
}
No, but there are various ways to solve it:
1) Create base controller class or another tooling class that contains some common utilities that should be shared between your controllers.
2) PartialView and Html.RenderAction
[ChildActionOnly]
public ActionResult Something(string p)
{
var entities = repository.GetEntities(p);
var partialViewModel = new PartialViewModel(entities);
return PartialView(partialViewModel);
}

Images not watched

I'm trying to make an image gallery. I have one controller with two functions and every function load one view. When I call index I can watch images but when I call the other one (tg) I can't watch them.
Images are in a folder named imagenes and its path is example.com/codeigniter.
The controller:
class Galeria extends CI_Controller {
public function __construct()
{
parent::__construct();
}
public function index()
{
$this->load->view('vgaleria');
}
public function tg()
{
$this->load->view('tgaleria');
}
}
The default controller is this one.
The view that I can't watch images:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Galería de imágenes</title>
<style type="text/css">
</style>
<script src="<?php echo base_url();?>javascript/funciones.js"
language="javascript" input="type/text">
</script>
</head>
<body>
<div id="imgs">
<img src="imagenes/imagen1.jpg" id="eimg">
</div>
<input type="button" id="bant" onclick="imginter('arrancar')"
value="Arrancar">
</button>
<input type="button" id="bsig" onclick="imgparar()" value="Parar"></button>
</body>
</html>
How can I watch images?
Thanks.
Try this:
<img src="<?php echo base_url(); ?>imagenes/imagen1.jpg" id="eimg">
Would also depend if you have removed your index.php from the url using .htaccess. Otherwise use site_url().

What is layout/template/themes in codeigniter

I'm new in codeigniter, I feel trouble about layout/template/themes in codeigniter.
I don't know when should using one of them..
What is the best way that i can do? if i want to make a website with free a html/css template like
goodnatured
|--img
|--img01.jpg
|--css
|--style.css
|--js
|--jquery.js
|--index.html
Anyone can tell me a tutorial, suggest, ... thanks
I just write little additional library(application/libraries/display_lib.php) for rendering tempates and similar page blocks.
Something like this:
class Display_Lib{
private $_CI;
private $_template_data;
public function __construct()
{
$this->_CI =& get_instance();
}
public function set($key, $value)
{
$this->_template_data[$key] = $value;
}
public function get($key)
{
return $this->_template_data[$key];
}
public function get_template_data()
{
return $this->_template_data;
}
public function display_page($view, $data = array())
{
$this->set('content', $this->_CI->load->view($view, $data, TRUE));
$this->_CI->load->view('templates/main_template', $this->get_template_data());
}
}
Set this library in auto load:
$autoload['libraries'] = array('session', 'database', 'display_lib');
And call it in controller:
class Main extends CI_Controller{
public function index()
{
$some_data = array();
$this->display_lib->display_page('views/main_view', $some_data);
}
}
Template example:
<!DOCTYPE html>
<html lang="en">
<head>
<base href="<?=base_url();?>">
<meta charset="utf-8">
<link rel="icon" href="<?=site_url('img/favicon.ico')?>" type="image/x-icon"/>
<link rel="stylesheet" href="<?=site_url('css/style.css');?>" type="text/css" media="screen, projection"/>
<script type="text/javascript" src="<?=site_url('js/jquery-1.10.2.min.js');?>"></script>
<title>Some page title</title>
</head>
<body>
<header></header>
<div class="auth_wrapper">
<div class="content">
<?=$content;?>
</div>
<div class="buffer"></div>
</div>
<footer></footer>
</body>
</html>
And application/views/main_view simple exmaple:
<div>Come content will be here</div>
This lib allow to use templates and render views from controllers.
Templates handle the layout of your page. You create a template that will contain your meta, header, footer, and a space for the body. The body get injected in the template, this is where the content change.
The idea is that most of the site don't change, only the body changes. This is where templates are useful, they save you time and increase consistency.
See this template library, it's pretty good: http://getsparks.org/packages/template/show
Themes is combined with a template as templates often define the layout and a theme just 'skin' the layout. A theme include assets and styles that will modify the template further more.
Cheers
Make a template.php, header.php, footer.php. Below is template.php, Similarly make header and footer and place them all in views folder:
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="icon" href="<?=site_url('img/favicon.ico')?>" type="image/x-icon"/>
<link rel="stylesheet" href="<?=site_url('css/style.css');?>" type="text/css" media="screen, projection"/>
<script type="text/javascript" src="<?=site_url('js/jquery-1.10.2.min.js');?>"></script>
<title>Some page title</title>
</head>
<body>
<header><?=$this->load->view('header');?></header>
<div class="wrapper">
<div class="content">
<?=$main?>
</div>
</div>
<footer><?=$this->load->view('footer');?></footer>
</body>
</html>
In your Controller function:
function index(){
$data = array();
$data['main'] = "home"; #this view is home.php in views folder, the content part of template.php
$this->load->view('template', $data); #this is the template file being rendered.
}
This is the most simple way of using templates in CI I think.

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