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<?php |
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/** |
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* A workflow transition. |
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* |
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* When used within the context of a workflow, the transition will have its |
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* "isValid()" method call. This must return true or false to indicate whether |
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* this transition is valid for the state of the workflow that it a part of. |
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* |
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* Therefore, any logic around whether the workflow can proceed should be |
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* managed within this method. |
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* |
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* @author [email protected] |
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* @license BSD License (http://silverstripe.org/bsd-license/) |
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* @package advancedworkflow |
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*/ |
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class WorkflowTransition extends DataObject { |
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private static $db = array( |
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'Title' => 'Varchar(128)', |
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'Sort' => 'Int', |
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'Type' => "Enum('Active, Passive', 'Active')" |
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); |
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private static $default_sort = 'Sort'; |
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private static $has_one = array( |
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'Action' => 'WorkflowAction', |
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'NextAction' => 'WorkflowAction', |
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); |
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private static $many_many = array( |
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'Users' => 'Member', |
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'Groups' => 'Group' |
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); |
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public static $icon = 'advancedworkflow/images/transition.png'; |
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/** |
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* |
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* @var array $extendedMethodReturn A basic extended validation routine method return format |
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*/ |
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public static $extendedMethodReturn = array( |
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'fieldName' =>null, |
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'fieldField'=>null, |
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'fieldMsg' =>null, |
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'fieldValid'=>true |
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); |
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/** |
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* Returns true if it is valid for this transition to be followed given the |
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* current state of a workflow. |
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* |
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* @param WorkflowInstance $workflow |
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* @return bool |
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*/ |
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public function isValid(WorkflowInstance $workflow) { |
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return true; |
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} |
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/** |
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* Before saving, make sure we're not in an infinite loop |
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*/ |
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public function onBeforeWrite() { |
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if(!$this->Sort) { |
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$this->Sort = DB::query('SELECT MAX("Sort") + 1 FROM "WorkflowTransition"')->value(); |
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} |
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parent::onBeforeWrite(); |
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} |
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public function validate() { |
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$result = parent::validate(); |
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return $result; |
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} |
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/* CMS FUNCTIONS */ |
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public function getCMSFields() { |
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$fields = new FieldList(new TabSet('Root')); |
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$fields->addFieldToTab('Root.Main', new TextField('Title', $this->fieldLabel('Title'))); |
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$filter = ''; |
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$reqParent = isset($_REQUEST['ParentID']) ? (int) $_REQUEST['ParentID'] : 0; |
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$attachTo = $this->ActionID ? $this->ActionID : $reqParent; |
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if ($attachTo) { |
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$action = DataObject::get_by_id('WorkflowAction', $attachTo); |
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if ($action && $action->ID) { |
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$filter = '"WorkflowDefID" = '.((int) $action->WorkflowDefID); |
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} |
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} |
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$actions = DataObject::get('WorkflowAction', $filter); |
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$options = array(); |
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if ($actions) { |
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$options = $actions->map(); |
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} |
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$defaultAction = $action?$action->ID:""; |
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$typeOptions = array( |
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'Active' => _t('WorkflowTransition.Active', 'Active'), |
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'Passive' => _t('WorkflowTransition.Passive', 'Passive'), |
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); |
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$fields->addFieldToTab('Root.Main', new DropdownField( |
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'ActionID', |
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$this->fieldLabel('ActionID'), |
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$options, $defaultAction)); |
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$fields->addFieldToTab('Root.Main', $nextActionDropdownField = new DropdownField( |
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'NextActionID', |
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$this->fieldLabel('NextActionID'), |
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$options)); |
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$nextActionDropdownField->setEmptyString(_t('WorkflowTransition.SELECTONE', '(Select one)')); |
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$fields->addFieldToTab('Root.Main', new DropdownField( |
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'Type', |
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_t('WorkflowTransition.TYPE', 'Type'), |
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$typeOptions |
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)); |
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$members = Member::get(); |
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$fields->findOrMakeTab( |
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'Root.RestrictToUsers', |
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_t('WorkflowTransition.TabTitle', 'Restrict to users') |
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); |
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$fields->addFieldToTab('Root.RestrictToUsers', new CheckboxSetField('Users', _t('WorkflowDefinition.USERS', 'Restrict to Users'), $members)); |
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$fields->addFieldToTab('Root.RestrictToUsers', new TreeMultiselectField('Groups', _t('WorkflowDefinition.GROUPS', 'Restrict to Groups'), 'Group')); |
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$this->extend('updateCMSFields', $fields); |
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return $fields; |
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} |
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public function fieldLabels($includerelations = true) { |
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$labels = parent::fieldLabels($includerelations); |
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$labels['Title'] = _t('WorkflowAction.TITLE', 'Title'); |
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$labels['ActionID'] = _t('WorkflowTransition.ACTION', 'Action'); |
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$labels['NextActionID'] = _t('WorkflowTransition.NEXT_ACTION', 'Next Action'); |
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return $labels; |
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} |
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public function getValidator() { |
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$required = new AWRequiredFields('Title', 'ActionID', 'NextActionID'); |
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$required->setCaller($this); |
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return $required; |
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} |
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public function numChildren() { |
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return 0; |
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} |
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public function summaryFields() { |
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return array( |
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'Title' => $this->fieldLabel('Title') |
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); |
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} |
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/** |
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* Check if the current user can execute this transition |
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* |
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* @return bool |
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**/ |
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public function canExecute(WorkflowInstance $workflow){ |
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$return = true; |
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$members = $this->getAssignedMembers(); |
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// If not admin, check if the member is in the list of assigned members |
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if(!Permission::check('ADMIN') && $members->exists()){ |
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if(!$members->find('ID', Member::currentUserID())) { |
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$return = false; |
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} |
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} |
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if($return) { |
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$extended = $this->extend('extendCanExecute', $workflow); |
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if($extended) $return = min($extended); |
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} |
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return $return !== false; |
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} |
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/** |
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* Allows users who have permission to create a WorkflowDefinition, to create actions on it too. |
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* |
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* @param Member $member |
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* @return bool |
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*/ |
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public function canCreate($member = null) { |
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return $this->Action()->WorkflowDef()->canCreate($member); |
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} |
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/** |
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* @param Member $member |
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* @return bool |
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*/ |
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public function canEdit($member = null) { |
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return $this->canCreate($member); |
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} |
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/** |
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* @param Member $member |
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* @return bool |
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*/ |
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public function canDelete($member = null) { |
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return $this->canCreate($member); |
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} |
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/** |
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* Returns a set of all Members that are assigned to this transition, either directly or via a group. |
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* |
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* @return ArrayList |
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*/ |
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View Code Duplication |
public function getAssignedMembers() { |
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$members = ArrayList::create($this->Users()->toArray()); |
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$groups = $this->Groups(); |
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foreach($groups as $group) { |
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$members->merge($group->Members()); |
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} |
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$members->removeDuplicates(); |
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return $members; |
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} |
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/* |
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* A simple field same-value checker. |
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* |
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* @param array $data |
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* @return array |
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* @see {@link AWRequiredFields} |
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*/ |
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public function extendedRequiredFieldsNotSame($data=null) { |
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$check = array('ActionID','NextActionID'); |
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foreach($check as $fieldName) { |
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if(!isset($data[$fieldName])) { |
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return self::$extendedMethodReturn; |
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} |
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} |
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// Have we found some identical values? |
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if($data[$check[0]] == $data[$check[1]]) { |
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self::$extendedMethodReturn['fieldName'] = $check[0]; // Used to display to the user, so the first of the array is fine |
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self::$extendedMethodReturn['fieldValid'] = false; |
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self::$extendedMethodReturn['fieldMsg'] = _t( |
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'WorkflowTransition.TRANSITIONLOOP', |
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'A transition cannot lead back to its parent action.'); |
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} |
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return self::$extendedMethodReturn; |
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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.