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Updated UPGRADE.md to mention JSON and Arrays support in AR

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SilverFire - Dmitry Naumenko
2018-02-19 18:21:33 +02:00
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framework/UPGRADE.md
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@ -62,6 +62,10 @@ Upgrade from Yii 2.0.13
`instanceof yii\db\Expression` in your code, you might consider changing that to checking for the interface and use the newly
introduced methods to retrieve the expression content.
* Added JSON support for PostgreSQL and MySQL as well as Arrays support for PostgreSQL on ActiveRecord layer.
In case you already implemented such support yourself, please switch to Yii implementation. Active Record will
return arrays instead of strings after data population and expects arrays to be assigned for further saving them into database.
* `yii\db\PdoValue` class has been introduced to replace a special syntax that was used to declare PDO parameter type
when binding parameters to an SQL command, for example: `['value', \PDO::PARAM_STR]`.
You should use `new PdoValue('value', \PDO::PARAM_STR)` instead. Old syntax will be removed in Yii 2.1.