CODEWITHSUNDEEP
phpviewlaravel
enchance
enchance

Reputation: 30471

Laravel: Difference between View::share() and View::composer()

In relation to the question Passing default variables to view, to pass variables available among all views, is there a technical or functional difference between the use of View::composer():

View::composer('*', function($view) {
    $thundercats = 'Woooooohh!!';
    $view->with('thundercats', $thundercats);
})

in the filters.php file or the use of View::share() in the BaseController.php file:

public function __construct {
    $thundercats = 'Woooooohh!!';
    View::share('thundercats', $thundercats);
}

I've only recently learned about View::share() and find it exceptionally intruiging although I've already started using the former in another project.

Edit:

My first assumption is that the former is a file (filters.php) while the the latter is a class (BaseController.php). With this in mind, I'm guessing a class is much better? Although, I'm not quite sure why at this point. :)

Upvotes: 9

Views: 11481

Answers (2)

tplaner
tplaner

Reputation: 8461

Technically they are not at all alike. View::share simply sets a variable, while View::composer is a callback function.

Let me explain in greater detail:

View::share is really straight forward it sets a variable which can be used within any of the views, think of it like a global variable.

View::composer registers an event which is called when the view is rendered, don't confuse it with a View::creator which is fired when a view is instantiated.

View::composer / View::creator can both be used as a class which is well documented.

While these give you the ability to pass additional data to a view, they also give you to ability to do a lot of other things, for example they could:

  • Aid in debugging a view
  • Log information about views
  • Be used to create custom caching (probably not a great idea, but possible)

These are just some examples of what could be possible using View::composer and View::creator.

Upvotes: 23

Atrakeur
Atrakeur

Reputation: 4244

View::composer('*', callback());

Means that the callback will be called for all views (*).

View::share

Means that a variable will be shared with all outputed views.

Because the first is in filters.php, it'll apply for all routes.

The second is in a controller contructor, so it'll apply for all views triggered by this controller.

One last thing: when overriding a constructor, it's a good pratice to allways call the parent constructor with this code:

parent::_construct();

Upvotes: 2

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