New PDF release: A Year With Symfony Writing healthy, reusable Symfony2

By Matthias Noback

ISBN-10: 9082120119

ISBN-13: 9789082120110

You recognize now easy methods to create a Symfony2 program, with routing, controllers, entities or records, Twig templates and perhaps a few unit assessments. yet after those uncomplicated steps, a few issues will increase about...
The reusability of your code - How in case you constitution your code to make it reusable in a destiny venture? or maybe within the comparable undertaking, yet with a special view or in a console command?
The quality of the inner API you have got knowingly or unknowingly created - What are you able to do to make sure that your crew participants will comprehend your code, and should use it within the manner it was once intended for use? how are you going to make your code versatile adequate for use in occasions reminiscent of the only you wrote it for?
The point of security of your program - Symfony2 and Doctrine appear to instantly make you invulnerable for famous assaults in your net software, like XSS, CSRF and SQL injection assaults. yet are you able to thoroughly depend on the framework? And what steps when you take to mend the various closing matters?

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5 Execute the controller Finally, it’s time to execute the controller. The response is caught and further processed. controller" event // use the controller resolver to get the controller arguments ... $response instanceof Response) { ... } } As you may remember from the Symfony documentation, a controller should return a Response object. If it doesn’t, some other part of the application should be able to convert the return value to a Response object in some way or another. 6 Enter the view layer When you choose to return a Response object directly from your controller, you can thereby effectively by-pass the templating engine: class SomeController { public function simpleAction() { return new Response( '

Pure old-fashioned HTML

' ); } } However, when you return anything else (though usually an array of template variables), this return value needs to be converted to a Response object before it can be used as a decent response to be sent back to the client.

It can have any child node you like: $rootNode ->children() ->booleanNode('auto_connect') ->defaultTrue() ->end() ->scalarNode('default_connection') ->defaultValue('default') ->end() ->end() ; Learn to write great config trees When you want to become a proficient bundle creator, practice a lot with defining these config nodes. Your bundle configurations will be much better and very flexible. Read more about the configuration nodes in the documentation of the Config Component². Also take a look at Configuration class from existing bundles and try to follow their example.

This will raise an exception when the injected service could not be found. Service patterns 35 Checking for optionally injected dependencies When you want to check whether or not an optional dependency was injected, you should do it like this: if ($this->logger instanceof LoggerInterface) { ... == null) { ... } Think about it: if something is not the same as null, can it then be inferred that it is a logger? Optional setter calls Just like with required dependencies, there is sometimes a good case for injecting optional dependencies using a setter.

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A Year With Symfony Writing healthy, reusable Symfony2 by Matthias Noback


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