Merge branch 'master' of github.com:yiisoft/yii2

docs/guide/controller.md

@@ -0,0 +1,187 @@
+Controller
+==========
+
+Controller is one of the key parts of the application. It determines how to handle incoming request and creates a response.
+
+Most often a controller takes HTTP request data and returns HTML, JSON or XML as a response.
+
+Basics
+------
+
+Controller resides in application's `controllers` directory is is named like `SiteController.php` where `Site`
+part could be anything describing a set of actions it contains.
+
+The basic web controller is a class that extends [[\yii\web\Controller]] and could be very simple:
+
+```php
+namespace app\controllers;
+
+use yii\web\Controller;
+
+class SiteController extends Controller
+{
+	public function actionIndex()
+	{
+		// will render view from "views/site/index.php"
+		return $this->render('index');
+	}
+
+	public function actionTest()
+	{
+		// will just print "test" to the browser
+		return 'test';
+	}
+}
+```
+
+As you can see, typical controller contains actions that are public class methods named as `actionSomething`.
+
+Routes
+------
+
+Each controller action has a corresponding internal route. In our example above `actionIndex` has `site/index` route
+and `actionTest` has `site/test` route. In this route `site` is referred to as controller ID while `test` is referred to
+as action ID.
+
+By default you can access specific controller and action using the `http://example.com/?r=controller/action` URL. This
+behavior is fully customizable. For details refer to [URL Management](url.md).
+
+If controller is located inside a module its action internal route will be `module/controller/action`.
+
+In case module, controller or action specified isn't found Yii will return "not found" page and HTTP status code 404.
+
+### Defaults
+
+If user isn't specifying any route i.e. using URL like `http://example.com/`, Yii assumes that default route should be
+used. It is determined by [[\yii\web\Application::defaultRoute]] method and is `site` by default meaning that `SiteController`
+will be loaded.
+
+A controller has a default action. When the user request does not specify which action to execute by usign an URL such as
+`http://example.com/?r=site`, the default action will be executed. By default, the default action is named as `index`.
+It can be changed by setting the [[\yii\base\Controller::defaultAction]] property.
+
+Action parameters
+-----------------
+
+It was already mentioned that a simple action is just a public method named as `actionSomething`. Now we'll review
+ways that an action can get parameters from HTTP.
+
+### Action parameters
+
+You can define named arguments for an action and these will be automatically populated from corresponding values from
+`$_GET`. This is very convenient both because of the short syntax and an ability to specify defaults:
+
+```php
+namespace app\controllers;
+
+use yii\web\Controller;
+
+class BlogController extends Controller
+{
+	public function actionView($id, $version = null)
+	{
+		$post = Post::find($id);
+		$text = $post->text;
+
+		if($version) {
+			$text = $post->getHistory($version);
+		}
+
+		return $this->render('view', array(
+			'post' => $post,
+			'text' => $text,
+		));
+	}
+}
+```
+
+The action above can be accessed using either `http://example.com/?r=blog/view&id=42` or
+`http://example.com/?r=blog/view&id=42&version=3`. In the first case `version` isn't specified and default parameter
+value is used instead.
+
+### Getting data from request
+
+If your action is working with data from HTTP POST or has too many GET parameters you can rely on request object that
+is accessible via `\Yii::$app->request`:
+
+```php
+namespace app\controllers;
+
+use yii\web\Controller;
+use yii\web\HttpException;
+
+class BlogController extends Controller
+{
+	public function actionUpdate($id)
+	{
+		$post = Post::find($id);
+		if(!$post) {
+			throw new HttpException(404);
+		}
+
+		if(\Yii::$app->request->isPost)) {
+			$post->load($_POST);
+			if($post->save()) {
+				$this->redirect(array('view', 'id' => $post->id));
+			}
+		}
+
+		return $this->render('update', array(
+			'post' => $post,
+		));
+	}
+}
+```
+
+Standalone actions
+------------------
+
+If action is generic enough it makes sense to implement it in a separate class to be able to reuse it.
+Create `actions/Page.php`
+
+```php
+namespace \app\actions;
+
+class Page extends \yii\base\Action
+{
+	public $view = 'index';
+
+	public function run()
+	{
+		$this->controller->render($view);
+	}
+}
+```
+
+The following code is too simple to implement as a separate action but gives an idea of how it works. Action implemented
+can be used in your controller as following:
+
+```php
+public SiteController extends \yii\web\Controller
+{
+	public function actions()
+	{
+		return array(
+			'about' => array(
+				'class' => '@app/actions/Page',
+					'view' => 'about',
+				),
+			),
+		);
+	}
+}
+```
+
+After doing so you can access your action as `http://example.com/?r=site/about`.
+
+Filters
+-------
+
+Catching all incoming requests
+------------------------------
+
+
+See also
+--------
+
+- [Console](console.md)

docs/guide/database-basics.md

@@ -133,27 +133,26 @@ $connection->createCommand()->delete('tbl_user', 'status = 0')->execute();
 Quoting table and column names
 ------------------------------
 
-If you are building query string dynamically make sure you're properly quoting table and column names using
-[[\yii\db\Connection::quoteTableName()]] and [[\yii\db\Connection::quoteColumnName()]]:
+Most of the time you would use the following syntax for quoting table and column names:
 
 ```php
-$column = $connection->quoteColumnName($column);
-$table = $connection->quoteTableName($table);
-$sql = "SELECT COUNT($column) FROM $table";
+$sql = "SELECT COUNT([[$column]]) FROM {{$table}}";
 $rowCount = $connection->createCommand($sql)->queryScalar();
 ```
 
-Alternatively you can use special syntax when writing SQL:
+In the code above `[[X]]` will be converted to properly quoted column name while `{{Y}}` will be converted to properly
+quoted table name.
+
+The alternative is to quote table and column names manually using [[\yii\db\Connection::quoteTableName()]] and
+[[\yii\db\Connection::quoteColumnName()]]:
 
 ```php
-$sql = "SELECT COUNT({{$column}}) FROM [[$table]]";
+$column = $connection->quoteColumnName($column);
+$table = $connection->quoteTableName($table);
+$sql = "SELECT COUNT($column) FROM $table";
 $rowCount = $connection->createCommand($sql)->queryScalar();
 ```
 
-In the code above `{{X}}` will be converted to properly quoted column name while `[[Y]]` will be converted to properly
-quoted table name.
-
-
 Prepared statements
 -------------------
 

docs/guide/upgrade-from-v1.md

@@ -163,6 +163,26 @@ A model is now associated with a form name returned by its `formName()` method.
 mainly used when using HTML forms to collect user inputs for a model. Previously in 1.1,
 this is usually hardcoded as the class name of the model.
 
+A new methods called `load()` and `Model::loadMultiple()` is introduced to simplify the data population from user inputs
+to a model. For example,
+
+```php
+$model = new Post;
+if ($model->load($_POST)) {...}
+// which is equivalent to:
+if (isset($_POST['Post'])) {
+    $model->attributes = $_POST['Post'];
+}
+
+$model->save();
+
+$postTags = array();
+$tagsCount = count($_POST['PostTag']);
+while($tagsCount-- > 0){
+    $postTags[] = new PostTag(array('post_id' => $model->id));
+}
+Model::loadMultiple($postTags, $_POST);
+```
 
 Yii 2.0 introduces a new method called `scenarios()` to declare which attributes require
 validation under which scenario. Child classes should overwrite `scenarios()` to return
@@ -196,18 +216,6 @@ Controllers
 The `render()` and `renderPartial()` methods now return the rendering results instead of directly
 sending them out. You have to `echo` them explicitly, e.g., `echo $this->render(...);`.
 
-A new method called `populate()` is introduced to simplify the data population from user inputs
-to a model. For example,
-
-```php
-$model = new Post;
-if ($model->load($_POST)) {...}
-// which is equivalent to:
-if (isset($_POST['Post'])) {
-    $model->attributes = $_POST['Post'];
-}
-```
-
 
 Widgets
 -------

framework/yii/base/Formatter.php

@@ -70,6 +70,26 @@ public function init()
 		}
 	}
 
+	/**
+	 * Formats the value based on the give type.
+	 * This method will call one of the "as" methods available in this class to do the formatting.
+	 * For type "xyz", the method "asXyz" will be used. For example, if the type is "html",
+	 * then [[asHtml()]] will be used. Type names are case insensitive.
+	 * @param mixed $value the value to be formatted
+	 * @param string $type the type of the value, e.g., "html", "text".
+	 * @return string the formatting result
+	 * @throws InvalidParamException if the type is not supported by this class.
+	 */
+	public function format($value, $type)
+	{
+		$method = 'as' . $type;
+		if (method_exists($this, $method)) {
+			return $this->$method($value);
+		} else {
+			throw new InvalidParamException("Unknown type: $type");
+		}
+	}
+
 	/**
 	 * Formats the value as is without any formatting.
 	 * This method simply returns back the parameter without any format.

framework/yii/base/Model.php

@@ -694,7 +694,7 @@ public static function loadMultiple($models, $data)
 					$success = true;
 				}
 			} elseif (isset($data[$scope][$i])) {
-				$model->setAttributes($data[$scope[$i]]);
+				$model->setAttributes($data[$scope][$i]);
 				$success = true;
 			}
 		}