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<?php |
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namespace SilverStripe\ControllerPolicy; |
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use SilverStripe\Control\Middleware\HTTPMiddleware; |
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use SilverStripe\Core\Extension; |
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/** |
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* This extension will register the policy with the middleware system to be run at process() stage |
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* of the middleware control pipeline. This is done with the help of the ControllerPolicyMiddleware. |
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* |
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* This will override any specific headers that have been set by the default HTTP::add_cache_headers, which is |
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* actually what we want. The policies are applied in the order they are added, so if there are two added the |
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* latter will override the former. |
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*/ |
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class ControllerPolicyApplicator extends Extension |
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{ |
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/** |
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* @var HTTPMiddleware |
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*/ |
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protected $middleware; |
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/** |
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* @var array |
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*/ |
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protected $policies = []; |
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/** |
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* @param HTTPMiddleware $middleware |
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*/ |
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public function setMiddleware(HTTPMiddleware $middleware) |
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{ |
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$this->middleware = $middleware; |
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return $this; |
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} |
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/** |
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* @return HTTPMiddleware |
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*/ |
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public function getMiddleware() |
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{ |
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return $this->middleware; |
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} |
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/** |
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* Set the policies for this controller. Will set, not add to the list. |
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* |
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* @param mixed $policies |
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*/ |
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public function setPolicies($policies) |
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{ |
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if (!is_array($policies)) { |
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$policies = [$policies]; |
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} |
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$this->policies = $policies; |
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} |
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/** |
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* Get the policies for this controller |
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* |
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* @return array |
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*/ |
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public function getPolicies() |
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{ |
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return $this->policies; |
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} |
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/** |
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* Register the requested policies with the global request filter. This doesn't mean the policies will be |
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* executed at this point - it will rather be delayed until the Director::callMiddleware runs. |
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*/ |
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public function onAfterInit() |
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{ |
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if (!$this->getPolicies()) { |
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return; |
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} |
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// Flip the policy array, so the first element in the array is the one applying last. |
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// This is needed so the policies on inheriting Controllers are in the intuitive order: |
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// the more specific overrides the less specific. |
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$policies = array_reverse($this->getPolicies()); |
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foreach ($policies as $policy) { |
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$this->getMiddleware()->requestPolicy($this->owner, $policy); |
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} |
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} |
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} |
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silverstripe /
silverstripe-controllerpolicy
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