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<?php
namespace Illuminate\Routing;
use Closure;
use Illuminate\Database\Eloquent\ModelNotFoundException;
use Illuminate\Support\Str;
class RouteBinding
{
/**
* Create a Route model binding for a given callback.
*
* @param \Illuminate\Container\Container $container
* @param \Closure|string $binder
* @return \Closure
*/
public static function forCallback($container, $binder)
{
if (is_string($binder)) {
return static::createClassBinding($container, $binder);
}
return $binder;
}
/**
* Create a class based binding using the IoC container.
*
* @param \Illuminate\Container\Container $container
* @param string $binding
* @return \Closure
*/
protected static function createClassBinding($container, $binding)
{
return function ($value, $route) use ($container, $binding) {
// If the binding has an @ sign, we will assume it's being used to delimit
// the class name from the bind method name. This allows for bindings
// to run multiple bind methods in a single class for convenience.
[$class, $method] = Str::parseCallback($binding, 'bind');
$callable = [$container->make($class), $method];
return $callable($value, $route);
};
}
/**
* Create a Route model binding for a model.
*
* @param \Illuminate\Container\Container $container
* @param string $class
* @param \Closure|null $callback
* @return \Closure
*
* @throws \Illuminate\Database\Eloquent\ModelNotFoundException
*/
public static function forModel($container, $class, $callback = null)
{
return function ($value) use ($container, $class, $callback) {
if (is_null($value)) {
return;
}
// For model binders, we will attempt to retrieve the models using the first
// method on the model instance. If we cannot retrieve the models we'll
// throw a not found exception otherwise we will return the instance.
$instance = $container->make($class);
if ($model = $instance->resolveRouteBinding($value)) {
return $model;
}
// If a callback was supplied to the method we will call that to determine
// what we should do when the model is not found. This just gives these
// developer a little greater flexibility to decide what will happen.
if ($callback instanceof Closure) {
return $callback($value);
}
throw (new ModelNotFoundException)->setModel($class);
};
}
}