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tags/2.0.0-rc
Larry Ullman 11 years ago
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  1. 26
      docs/guide/intro-upgrade-from-v1.md

26
docs/guide/intro-upgrade-from-v1.md
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@ -301,9 +301,8 @@ Please refer to the [Internationalization](tutorial-i18n.md) section for more de
Action Filters
--------------
Action filters are implemented via behaviors now. You should extend from [[yii\base\ActionFilter]] to
define a new filter. To use a filter, you should attach the filter class to the controller
as a behavior. For example, to use the [[yii\filters\AccessControl]] filter, you should have the following
Action filters are implemented via behaviors now. To define a new, custom filter, extend from [[yii\base\ActionFilter]]. To use a filter, attach the filter class to the controller
as a behavior. For example, to use the [[yii\filters\AccessControl]] filter, you would have the following
code in a controller:
```php
@ -326,12 +325,12 @@ Please refer to the [Filtering](runtime-filtering.md) section for more details.
Assets
------
Yii 2.0 introduces a new concept called *asset bundle* which replaces the script package concept in 1.1.
Yii 2.0 introduces a new concept called *asset bundle* that replaces the script package concept found in Yii 1.1.
An asset bundle is a collection of asset files (e.g. JavaScript files, CSS files, image files, etc.)
under a directory. Each asset bundle is represented as a class extending [[yii\web\AssetBundle]].
By registering an asset bundle via [[yii\web\AssetBundle::register()]], you will be able to make
the assets in that bundle accessible via Web, and the page registering the bundle will automatically
within a directory. Each asset bundle is represented as a class extending [[yii\web\AssetBundle]].
By registering an asset bundle via [[yii\web\AssetBundle::register()]], you make
the assets in that bundle accessible via the Web. Unlike in Yii 1, the page registering the bundle will automatically
contain the references to the JavaScript and CSS files specified in that bundle.
Please refer to the [Managing Assets](output-assets.md) section for more details.
@ -340,7 +339,7 @@ Please refer to the [Managing Assets](output-assets.md) section for more details
Helpers
-------
Yii 2.0 introduces many commonly used static helper classes, such as
Yii 2.0 introduces many commonly used static helper classes, including.
* [[yii\helpers\Html]]
* [[yii\helpers\ArrayHelper]]
@ -349,13 +348,14 @@ Yii 2.0 introduces many commonly used static helper classes, such as
* [[yii\helpers\Json]]
* [[yii\helpers\Security]]
Please refer to the [Helper Overview](helper-overview.md) section for more details.
Forms
-----
Yii 2.0 introduces the *field* concept for building a form using [[yii\widgets\ActiveForm]]. A field
is a container consisting of a label, an input, an error message, and/or a hint text.
It is represented as an [[yii\widgets\ActiveField|ActiveField]] object.
A field is represented as an [[yii\widgets\ActiveField|ActiveField]] object.
Using fields, you can build a form more cleanly than before:
```php
@ -368,13 +368,15 @@ Using fields, you can build a form more cleanly than before:
<?php yii\widgets\ActiveForm::end(); ?>
```
Please refer to the [Creating Forms](input-forms.md) section for more details.
Query Builder
-------------
In 1.1, query building is scattered among several classes, including `CDbCommand`,
In 1.1, query building was scattered among several classes, including `CDbCommand`,
`CDbCriteria`, and `CDbCommandBuilder`. Yii 2.0 represents a DB query in terms of a [[yii\db\Query|Query]] object
which can be turned into a SQL statement with the help of [[yii\db\QueryBuilder|QueryBuilder]] behind the scene.
that can be turned into a SQL statement with the help of [[yii\db\QueryBuilder|QueryBuilder]] behind the scene.
For example:
```php
@ -396,7 +398,7 @@ Please refer to the [Query Builder](db-query-builder.md) section for more detail
Active Record
-------------
Yii 2.0 introduces a lot of changes to [Active Record](db-active-record.md). Two most obvious ones are:
Yii 2.0 introduces a lot of changes to [Active Record](db-active-record.md). Two most obvious ones are
query building and relational query handling.
The `CDbCriteria` class in 1.1 is replaced by [[yii\db\ActiveQuery]] which extends from [[yii\db\Query]] and thus

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