# Upload Image

The following example shows how to handle uploading of an image, resize it and save it to a file. Be sure you have enabled the [Image] module as discussed in getting started guide.

Assuming you are creating a web application that allows your members to upload their profile picture (avatar), the steps below explains it how.

## Controller

First we need to create a controller that handles the requests for uploading an image. We will name it `Controller_Avatar` and accessible through `/avatar` URL. Assuming that your project is located at [http://localhost/ko7](http://localhost/ko7), then our avatar controller is at [http://localhost/ko7/avatar](http://localhost/ko7/avatar).

For simplicity, the upload form will be on `index` action and `upload` action will process the uploaded file. This is what our controller now looks like. Please note that we are not using [Controller_Template], just [Controller].

~~~
<?php

class Controller_Avatar extends Controller {

	public function action_index()
	{
		$view = View::factory('avatar/index');
		$this->response->body($view);
	}
	
	public function action_upload()
	{
		$view = View::factory('avatar/upload');
		$error_message = NULL;
		$filename = NULL;
		
		if ($this->request->method() == Request::POST)
		{
			if (isset($_FILES['avatar']))
			{
				$filename = $this->_save_image($_FILES['avatar']);
			}
		}
		
		if ( ! $filename)
		{
			$error_message = 'There was a problem while uploading the image.
				Make sure it is uploaded and must be JPG/PNG/GIF file.';
		}
		
		$view->uploaded_file = $filename;
		$view->error_message = $error_message;
		$this->response->body($view);
	}
	
	protected function _save_image($image)
	{
		if (
			! Upload::valid($image) OR
			! Upload::not_empty($image) OR
			! Upload::type($image, array('jpg', 'jpeg', 'png', 'gif')))
		{
			return FALSE;
		}
		
		$directory = DOCROOT.'uploads/';
		
		if ($file = Upload::save($image, NULL, $directory))
		{
			$filename = strtolower(Text::random('alnum', 20)).'.jpg';
			
			Image::factory($file)
				->resize(200, 200, Image::AUTO)
				->save($directory.$filename);

			// Delete the temporary file
			unlink($file);
			
			return $filename;
		}
		
		return FALSE;
	}
	
}
~~~

We have `index` and `upload` actions. `index` action will display the upload form and `upload` action will process the uploaded image and provides feedback to the user.

In `upload` action, it checks if the request method was `POST`, then delegates the process to `_save_image()` method which in turn performs various checks and finally resize and save the image to the `uploads` directory.

## Views

For the upload form (the `index` action), the view is located at `views/avatar/index.php`.

~~~
<html>
	<head>
		<title>Upload Avatar</title>
	</head>
	<body>
		<h1>Upload your avatar</h1>
		<form id="upload-form" action="<?php echo URL::site('avatar/upload') ?>" method="post" enctype="multipart/form-data">
			<p>Choose file:</p>
			<p><input type="file" name="avatar" id="avatar" /></p>
			<p><input type="submit" name="submit" id="submit" value="Upload" /></p>
		</form>
	</body>
</html>
~~~

Take note of the action attribute. It points to our `avatar/upload` action whose view code goes to `views/avatar/upload.php`.

~~~
<html>
	<head>
		<title>Upload Avatar Result</title>
	</head>
	<body>
		<?php if ($uploaded_file): ?>
		<h1>Upload success</h1>
		<p>
			Here is your uploaded avatar:
			<img src="<?php echo URL::site("/uploads/$uploaded_file") ?>" alt="Uploaded avatar" />
		</p>
		<?php else: ?>
		<h1>Something went wrong with the upload</h1>
		<p><?php echo $error_message ?></p>
		<?php endif ?>
	</body>
</html>
~~~

When the upload is successfull, a success message is displayed with the uploaded image displayed. Otherwise, when it fails, it displays an error message.

## Screenshots

Below are screenshots for this example.

![Upload image form](upload_form.jpg)

_Upload image form_

![Upload result page](upload_result.jpg)

_Upload result form_
