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<?php |
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namespace Sunnysideup\SimpleTemplateCaching\Extensions; |
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use SilverStripe\Core\Extension; |
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use SilverStripe\Security\Security; |
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class PageControllerExtension extends Extension |
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{ |
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/** |
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* @var null|string |
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*/ |
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protected static $_cache_key_any_data_object_changes; |
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/** |
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* @var null|bool |
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*/ |
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private static $_can_cache_content; |
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/** |
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* @var string |
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*/ |
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private static $_can_cache_content_string = ''; |
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public function HasCacheKeys(): bool |
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{ |
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if (null === self::$_can_cache_content) { |
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self::$_can_cache_content_string = ''; |
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if ($this->owner->hasMethod('canCachePage')) { |
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self::$_can_cache_content_string = $this->owner->canCachePage() ? '' : 'can-no-cache-' . $this->owner->ID; |
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if (! $this->canCacheCheck()) { |
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return false; |
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} |
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} |
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//action |
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$action = $this->owner->request->param('Action'); |
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if ($action) { |
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self::$_can_cache_content_string .= $action; |
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if (! $this->canCacheCheck()) { |
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return false; |
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} |
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} |
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$id = $this->owner->request->param('ID'); |
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// id |
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if ($id) { |
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self::$_can_cache_content_string .= $id; |
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if (! $this->canCacheCheck()) { |
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return false; |
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} |
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} |
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//request vars |
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$requestVars = $this->owner->request->requestVars(); |
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if ($requestVars) { |
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foreach ($this->owner->request->requestVars() as $item) { |
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if (is_string($item)) { |
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self::$_can_cache_content_string .= $item; |
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} elseif (is_numeric($item)) { |
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self::$_can_cache_content_string .= $item; |
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} |
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if (! $this->canCacheCheck()) { |
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return false; |
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} |
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} |
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} |
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//member |
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$member = Security::getCurrentUser(); |
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if ($member && $member->exists()) { |
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self::$_can_cache_content_string .= $member->ID; |
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if (! $this->canCacheCheck()) { |
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return false; |
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} |
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} |
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// we are ok! |
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self::$_can_cache_content = true; |
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} |
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return self::$_can_cache_content; |
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} |
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public function HasCacheKeyHeader(): bool |
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{ |
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return $this->HasCacheKeys(); |
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} |
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public function HasCacheKeyMenu(): bool |
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{ |
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return $this->HasCacheKeys(); |
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} |
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public function HasCacheKeyContent(): bool |
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{ |
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return $this->HasCacheKeys(); |
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} |
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public function HasCacheKeyFooter(): bool |
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{ |
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return $this->HasCacheKeys(); |
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} |
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public function CacheKeyHeader(): string |
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{ |
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return $this->CacheKeyGenerator('H'); |
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} |
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public function CacheKeyMenu(): string |
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{ |
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return $this->CacheKeyGenerator('M'); |
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} |
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public function CacheKeyFooter(): string |
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{ |
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return $this->CacheKeyGenerator('F'); |
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} |
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public function CacheKeyContent(): string |
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{ |
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$cacheKey = $this->CacheKeyGenerator('C'); |
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if ($this->owner->hasMethod('CacheKeyContentCustom')) { |
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$cacheKey .= '_' . $this->owner->CacheKeyContentCustom(); |
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} |
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return $cacheKey; |
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} |
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public function CacheKeyGenerator($letter): string |
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{ |
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if ($this->HasCacheKeys()) { |
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$string = $letter . '_' . |
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$this->cacheKeyAnyDataObjectChanges() . '_' . |
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'ID_' . $this->owner->ID; |
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} else { |
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$string = 'NOT_CACHED_' . time() . '_' . rand(0, 999); |
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} |
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return $string; |
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} |
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protected function canCacheCheck(): bool |
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{ |
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if ('' !== trim(self::$_can_cache_content_string)) { |
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self::$_can_cache_content = false; |
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return false; |
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} |
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return true; |
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} |
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protected function getCanCacheContentString(): string |
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{ |
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return self::$_can_cache_content_string; |
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} |
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protected function cacheKeyAnyDataObjectChanges(): string |
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{ |
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if (null === self::$_cache_key_any_data_object_changes) { |
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self::$_cache_key_any_data_object_changes = SimpleTemplateCachingSiteConfigExtension::site_cache_key(); |
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self::$_cache_key_any_data_object_changes .= $this->getCanCacheContentString(); |
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} |
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return self::$_cache_key_any_data_object_changes; |
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} |
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} |
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sunnysideup /
silverstripe-simple-template-caching
