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<?php |
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/** |
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* Class DMSDocumentCartExtension |
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* |
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* @property Boolean AllowedInCart |
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* @property Int PrintRequestCount |
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* |
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* @property DMSDocument owner |
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*/ |
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class DMSDocumentCartExtension extends DataExtension |
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{ |
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/** |
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* @var DMSDocumentCartController |
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*/ |
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private $cartController; |
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private static $db = array( |
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'AllowedInCart' => 'Boolean', |
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'MaximumCartQuantity' => 'Int', |
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// Running total of print requests on this document |
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'PrintRequestCount' => 'Int', |
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); |
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private static $summary_fields = array( |
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'PrintRequestCount' => 'Print Requests', |
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); |
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/** |
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* Returns if a Document is permitted to reflect in a cart |
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* |
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* @return boolean |
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*/ |
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public function isAllowedInCart() |
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{ |
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return ($this->owner->AllowedInCart && $this->owner->canView()); |
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} |
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public function updateCMSFields(FieldList $fields) |
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{ |
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Requirements::javascript(DMS_CART_DIR . '/javascript/dmscart.js'); |
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$newFields = array( |
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CheckboxField::create( |
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'AllowedInCart', |
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_t('DMSDocumentCart.ALLOWED_IN_CART', 'Allowed in document cart') |
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)->addExtraClass('dms-allowed-in-cart'), |
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TextField::create( |
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'MaximumCartQuantity', |
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_t('DMSDocumentCart.MAXIMUM_CART_QUANTITY', 'Maximum cart quantity') |
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)->setRightTitle( |
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_t( |
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'DMSDocumentCart.MAXIMUM_CART_QUANTITY_HELP', |
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'If set, this will enforce a maximum number of this item that can be ordered per cart' |
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) |
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)->addExtraClass('dms-maximum-cart-quantity hide') |
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); |
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foreach ($newFields as $field) { |
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$fields->insertBefore($field, 'Description'); |
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} |
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} |
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/** |
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* Increments the number of times a document was printed |
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* |
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* @return DMSDocument |
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*/ |
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public function incrementPrintRequest() |
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{ |
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$this->owner->PrintRequestCount++; |
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$this->owner->write(); |
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return $this->owner; |
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} |
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/** |
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* Checks if a given document already exists within the Cart. True if it does, false otherwise |
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* |
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* @return bool |
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*/ |
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public function isInCart() |
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{ |
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return (bool) $this->getCart()->isInCart($this->owner->ID); |
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} |
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/** |
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* Returns whether the current document has a limit on how many items can be added to a single cart |
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* |
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* @return bool |
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*/ |
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public function getHasQuantityLimit() |
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{ |
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return $this->owner->getMaximumQuantity() > 0; |
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} |
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/** |
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* Get the maximum quantity of this document that can be ordered in a single cart |
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* |
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* @return int |
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*/ |
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public function getMaximumQuantity() |
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{ |
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return (int) $this->owner->MaximumCartQuantity; |
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} |
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/** |
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* Builds and returns a valid DMSDocumentController URL from the given $action link |
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* |
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* @param string $action Can be either 'add', 'remove' or 'checkout' |
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* |
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* @return string |
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* |
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* @throws DMSDocumentCartException if the provided $action is not allowed. |
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*/ |
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public function getActionLink($action = 'add') |
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{ |
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$action = strtolower($action); |
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$allowedActions = array_merge($this->getCartController()->allowedActions(), array('checkout')); |
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if (!in_array($action, $allowedActions)) { |
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throw new DMSDocumentCartException("{$action} is not accepted for this method."); |
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} |
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if ($action === 'checkout') { |
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$result = DMSCheckoutController::singleton()->Link(); |
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} else { |
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$result = Controller::join_links('documentcart', $action, $this->owner->ID); |
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} |
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return $result; |
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} |
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/** |
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* Retrieves a DMSDocumentCartController handle |
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* |
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* @return DMSDocumentCartController |
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*/ |
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public function getCartController() |
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{ |
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if (!$this->cartController) { |
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$this->cartController = DMSDocumentCartController::create(); |
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} |
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return $this->cartController; |
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} |
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/** |
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* Retrieves a DMSDocumentCart handle |
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* |
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* @return DMSDocumentCart |
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*/ |
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public function getCart() |
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{ |
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return $this->getCartController()->getCart(); |
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} |
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/** |
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* Returns any validation messages that may have been in the session and clears them |
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* |
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* @return false |
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*/ |
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public function getValidationResult() |
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{ |
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if ($result = Session::get('dms-cart-validation-message')) { |
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Session::clear('dms-cart-validation-message'); |
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return $result; |
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} |
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return false; |
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} |
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/** |
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* Add a "print request count" field to the summary fields for editing a DMS document |
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* |
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* @see DMSDocument::getFieldsForFile |
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* @param FieldGroup $fieldGroup |
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*/ |
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public function updateFieldsForFile(FieldGroup $fieldGroup) |
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{ |
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$fields = $fieldGroup->FieldList(); |
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/** @var FieldList $summaryFields */ |
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$summaryFields = $fields->fieldByName('FilePreview.FilePreviewData.FilePreviewDataFields'); |
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if (!($summaryFields instanceof CompositeField)) { |
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return; |
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} |
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$summaryFields->FieldList()->push( |
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ReadonlyField::create( |
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'PrintRequestCount', |
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_t( |
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__CLASS__ . '.PRINT_REQUEST_COUNT', |
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'Print request count:' |
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), |
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$this->owner->PrintRequestCount |
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) |
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); |
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} |
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} |
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.