wiki/content/20201109140137-symfony_4_0.md

date	id	title
2020-11-09	eaf00cf5-efb7-4f53-b721-4f0592671400	Symfony 4.0

What's new

Profiler

• Validator information in the Symfony profiler
• User impersonation in debug toolbar

Validation

Constraints

• ExpressionLanguage Constraint
• Groups support for Valid constraint

Annotations

• Prefix all controller route names

Subscribers

• Subscribing to events in the micro kernel

Components

Stopwatch

• reset() method
• Microseconds support

Command

• Lazy Commands

Translation

• XLIFF 2.0

Guard

• getCredentials() responsibilities split

Sessions

• Lazy Sessions

Commands

• debug:autowiring
• debug:form

Autowiring

• Local Service Binding