silverstripe-framework/forms/TableField.php

<?php

/**
 * TableField behaves in the same manner as TableListField, however allows the addition of 
 * fields and editing of attributes specified, and filtering results.
 * 
 * Caution: If you insert DropdownFields in the fieldTypes-array, make sure they have an empty first option.
 * Otherwise the saving can't determine if a new row should really be saved.
 * 
 * Caution: TableField relies on {@FormResponse} to reload the field after it is saved.
 * A TableField-instance should never be saved twice without reloading, because otherwise it 
 * can't determine if a field is new (=create) or existing (=update), and will produce duplicates.
 * 
 * @param $name string The fieldname
 * @param $sourceClass string The source class of this field
 * @param $fieldList array An array of field headings of Fieldname => Heading Text (eg. heading1)
 * @param $fieldTypes array An array of field types of fieldname => fieldType (eg. formfield). Do not use for extra data/hiddenfields.
 * @param $filterField string DEPRECATED The actual limiting filter, eg. 1 (please use $sourceFilter in the form "ParentID = 1" instead) 
 * @param $sourceFilter string The filter you wish to limit the objects by
 * @param $editExisting boolean (Note: Has to stay on this position for legacy reasons)
 * @param $sourceSort string
 * @param $sourceJoin string
 * 
 * TODO We should refactor this to support a single FieldSet instead of evaluated Strings for building FormFields
 */
 
class TableField extends TableListField {
	
	protected $sourceClass;
	
	protected $sourceFilter;
	
	protected $fieldList;
	
	/**
	 * @var $fieldTypes FieldSet
	 * Caution: Use {@setExtraData()} instead of manually adding HiddenFields if you want to 
	 * preset relations or other default data.
	 */
	protected $fieldTypes;
	
	protected $sourceSort;
	
	protected $sourceJoin;

	/**
	 * @var $template string Template-Overrides
	 */
	protected $template = "TableField";
	
	/**
	 * @var $extraData array Any extra data that need to be included, e.g. to retain
	 * has-many relations. Format: array('FieldName' => 'Value')
	 */
	protected $extraData;
	
	protected $tempForm;
	
	/**
	 * Influence output without having to subclass the template.
	 */
	protected $permissions = array(
		"edit",
		"delete",
		"add",
		//"export",
	);
	
	public $transformationConditions = array();
	
	/**
	 * @var $requiredFields array Required fields as a numerical array.
	 * Please use an instance of Validator on the including
	 * form.
	 */
	protected $requiredFields = null;
	
	/**
	 * For some table, we want Can(add) to be true, so we can add,
	 * but we don't want the default add row to be presented in the 
	 * table, we can set this wantDefaultAddRow to be false.
	 * @param boolean $wantDefaultAddRow
	 */
	protected $wantDefaultAddRow = true;

	function __construct($name, $sourceClass, $fieldList, $fieldTypes, $filterField = null, 
						$sourceFilter = null, $editExisting = true, $sourceSort = null, $sourceJoin = null) {
		
		$this->fieldTypes = $fieldTypes;
		$this->filterField = $filterField;
		
		$this->editExisting = $editExisting;
		parent::__construct($name, $sourceClass, $fieldList, $sourceFilter, $sourceSort, $sourceJoin);

		Requirements::javascript('sapphire/javascript/TableField.js');
	}
	
	/** 
	 * Displays the headings on the template
	 * 
	 * @return DataObjectSet
	 */
	function Headings() {
		$i=0;
		foreach($this->fieldList as $fieldName => $fieldTitle) {
			$extraClass = "col".$i;
			$class = $this->fieldTypes[$fieldName];
			if(is_object($class)) $class = "";
			$class = $class." ".$extraClass;
			$headings[] = new ArrayData(array("Name" => $fieldName, "Title" => $fieldTitle, "Class" => $class));
			$i++;
		}
		return new DataObjectSet($headings);
	}
	
	/**
	 * Calculates the number of columns needed for colspans
	 * used in template
	 * 
	 * @return int
	 */
	function ItemCount() {
		return count($this->fieldList);
	}
	
	/**
	 * Returns the databased saved items, from DataObjects
	 * 
	 * @return DataObjectSet
	 */
	function sourceItems() {
		if($this->customSourceItems) {
			$items = $this->customSourceItems;
		} elseif($this->cachedSourceItems) {
			$items = $this->cachedSourceItems;
		} else {
			if(!empty($this->filterField) && intval($this->sourceFilter) > 0) {
				// Legacy: If a filterField is specified and the sourceFilter is a valid ID (old format)
				$SQL_filter = Convert::raw2sql($this->sourceFilter);
				$SQL_filterField = $this->filterField;
				$items = DataObject::get($this->sourceClass,"`$SQL_filterField` = '$SQL_filter'", $this->sourceSort, $this->sourceJoin);
			} else {
				// get query
				$dataQuery = $this->getQuery();
				// get data
				$records = $dataQuery->execute();
				$items = singleton($this->sourceClass)->buildDataObjectSet($records);
			}
		}

		return $items;
	}
	
	/**
	 * Displays the items from sourceItems using the encapsulation object
	 * 
	 * @return DataObjectSet
	 */
	function Items() {
		$output = new DataObjectSet();
		if($items = $this->sourceItems()) {
			foreach	($items as $item) {
				// Load the data in to a temporary form (for correct field types)
				$fieldset = $this->FieldSetForRow();
				if($fieldset){
					$form = new Form(null, null, $fieldset, new FieldSet());
					$form->loadDataFrom($item);
	 				// Add the item to our new DataObjectSet, with a wrapper class.
					$output->push(new TableField_Item($item, $this, $form, $this->fieldTypes));
				}
			}
		}
		// Create a temporary DataObject
		if($this->Can('add')) {
			if($this->wantDefaultAddRow){
				$output->push(new TableField_Item(null, $this, null, $this->fieldTypes, true));
			}
		}

		return $output;
	}
	
	/**
	 * Get all fields for each row contained in the TableField.
	 * Does not include the empty row.
	 * 
	 * @return array
	 */
	function FieldSet() {
		$fields = array ();
		if($items = $this->sourceItems()) {
			foreach($items as $item) {
				// Load the data in to a temporary form (for correct field types)
				$fieldset = $this->FieldSetForRow();
				if ($fieldset)
				{
					// TODO Needs to be attached to a form existing in the DOM-tree
					$form = new Form($this, 'EditForm', $fieldset, new FieldSet());
					$form->loadDataFrom($item);
					$row = new TableField_Item($item, $this, $form, $this->fieldTypes);
					$fields = array_merge($fields, $row->Fields()->toArray());
				}
			}
		}

		return $fields;
	}
	
	function SubmittedFieldSet(&$sourceItems){
		$fields = array ();
		if($rows = $_POST[$this->name]){
			if(count($rows)){
				foreach($rows as $idx => $row){
					if($idx == 'new'){
						$newitems = ArrayLib::invert($row);
						if(count($newitems)){
							$sourceItems = new DataObjectSet();
							foreach($newitems as $k => $newitem){
								$fieldset = $this->FieldSetForRow();
								if($fieldset){
									$newitem[ID] = "new".$k;
									foreach($newitem as $k => $v){
										if(array_key_exists($k, $this->extraData)){
											unset($newitem[$k]);
										}
									}
									$sourceItem = new DataObject($newitem);
									if(!$sourceItem->isEmpty()){
										$sourceItems->push($sourceItem);
										$form = new Form($this, "EditForm", $fieldset, new FieldSet());
										$form->loadDataFrom($sourceItem);
										$item = new TableField_Item($sourceItem, $this, $form, $this->fieldTypes);
										$fields = array_merge($fields, $item->Fields()->toArray());
									}
								}
							}
						}
					}
				}
			}
		}
		return $fields;
	}
	
	/**
	 * @return array
	 */
	function FieldList() {
		return $this->fieldList;
	}
	
	/** 
	 * Saves the Dataobjects contained in the field
	 */
	function saveInto(DataObject $record) {
		// CMS sometimes tries to set the value to one.
		if(is_array($this->value)){
			
			// Sort into proper array
			$this->value = ArrayLib::invert($this->value);
			$dataObjects = $this->sortData($this->value, $record->ID);
			if($dataObjects['new']) {
				$newFields = $this->sortData($dataObjects['new'], $record->ID);
			}

			$savedObj = $this->saveData($dataObjects, $this->editExisting);
			if($savedObj && $newFields) {
				$savedObj += $this->saveData($newFields,false);
			} else if($newFields) {
				$savedObj = $this->saveData($newFields,false);
			}
			$items = $this->sourceItems();
			FormResponse::update_dom_id($this->id(), $this->FieldHolder());
		}
	}
	
	/**
	 * Get all fields in a single row.
	 * 
	 * @return FieldSet
	 */
	function FieldSetForRow() {
		$fieldset = new FieldSet();
		if($this->fieldTypes){
			foreach($this->fieldTypes as $key => $fieldType) {
				if(isset($fieldType->class) && is_subclass_of($fieldType, 'FormField')) {
					// using clone, otherwise we would just add stuff to the same field-instance
					$field = clone $fieldType;
				} elseif(strpos($fieldType, '(') === false) {
					$field = new $fieldType($key);
				} else {
					$fieldName = $key;
					$fieldTitle = "";
					$field = eval("return new $fieldType;");
				}
				if($this->IsReadOnly || !$this->Can('edit')) {
					$field = $field->performReadonlyTransformation();
				}
				$fieldset->push($field);
			}
		}else{
			USER_ERROR("TableField::FieldSetForRow() - Fieldtypes were not specified",E_USER_WARNING);
		}

		return $fieldset;
	}
	
	function performReadonlyTransformation() {
		$this->permissions = array('show');
		return $this;
	}

	function performDisabledTransformation() {
		$this->permissions = array('show');
		return $this;
	}
	
	/**
	 * Needed for Form->callfieldmethod.
	 */
	public function getField($fieldName, $combinedFieldName = null) {
		$fieldSet = $this->FieldSetForRow();
		$field = $fieldSet->dataFieldByName($fieldName);
		if(!$field) {
			return false;
		}
		
		if($combinedFieldName) {
			$field->Name = $combinedFieldName;
		}

		return $field;
	}
		
	/**
	 * Called on save, it creates the appropriate objects and writes them
	 * to the database.
	 */
	function saveData($dataObjects,$ExistingValues = true){
	    $savedObj = array();
	    $fieldset = $this->FieldSetForRow();
	    
	    // add hiddenfields
	    if($this->extraData) {
				foreach($this->extraData as $fieldName => $fieldValue) {
					$fieldset->push(new HiddenField($fieldName));
				}
			}
		
	    $form = new Form(null, null, $fieldset, new FieldSet());

			if($dataObjects) {
				foreach ($dataObjects as $objectid => $fieldValues) {
	        // we have to "sort" new data first, and process it in a seperate saveData-call (see setValue())
	        if($objectid === "new") {
	        	continue;
	        }

	        // extra data was creating fields, but
	        if($this->extraData) {
	        	$fieldValues = array_merge( $this->extraData, $fieldValues );
	        }
	        
	        $hasData = false;
	        $obj = new $this->sourceClass();
					
					if($ExistingValues) {
						$obj->ID = $objectid;
					}
					
					// Legacy: Use the filter as a predefined relationship-ID 
					if(!empty($this->filterField) && intval($this->sourceFilter) > 0) {
						$filterField = $this->filterField;
						$obj->$filterField = $this->sourceFilter;
					}
					
					// Determine if there is changed data for saving
					$dataFields = array();
					
					foreach($fieldValues as $type => $value) {
						if(is_array($this->extraData)){ // if the field is an actual datafield (not a preset hiddenfield)
							if(!in_array($type, array_keys($this->extraData))){
								$dataFields[$type] = $value;
							}
						}else{  // all fields are real 
							$dataFields[$type] = $value;
						}					
					}
				
					$dataValues = ArrayLib::array_values_recursive($dataFields);
				
					foreach($dataValues as $value) {
						if(!empty($value)) {
							$hasData = true;
						}
					}

					// save
					if($hasData) {
						$form->loadDataFrom($fieldValues, true);
						$form->saveInto($obj);
										
						$objectid = $obj->write();
						
						$savedObj[$objectid] = "Updated";
					}
	
				}
				return $savedObj;
			}
	}
	
	/** 
	 * organises the data in the appropriate manner for saving
	 */
	function sortData($data, $recordID = null) {
		if($data) {
            $dataObjects = array();
			foreach($data as $field => $rowData) {
				$i = 0;
				$blank = 0;
				if(!is_array($rowData)) continue;
				foreach($rowData as $id => $value) {
					if($value == '$RecordID') $value = $recordID;
					
					if($value){
						$dataObjects[$id][$field] = $value;
					}else{
						$blank++;
					}
					$i++;
				}
				
				// TODO ADD stuff for removing rows with incomplete data
			}
    		return $dataObjects;
		}
	}
	
	/**
	 * @param $extraData array
	 */
	function setExtraData($extraData) {
		$this->extraData = $extraData;
	}
	
	function setWantDefaultAddRow($bool){
		$this->wantDefaultAddRow = $bool;
	}

	/**
	 * @return array
	 */
	function getExtraData() {
		return $this->extraData;
	}
	
	/**
	 * Sets the template to be rendered with
	 */
	function FieldHolder() {
		return $this->renderWith($this->template);
	}
	
	/**
	 * @return Int
	 */
	function sourceID() {
		return $this->filterField;
	}
	
	/**
	 * @return String
	 */
	function delete() {	
		$childId = Convert::raw2sql($_REQUEST['childID']);
		if (is_numeric($childId)) {
			$childObject = DataObject::get_by_id($this->sourceClass, $childId);
			if($childObject) {
				$childObject->delete();
				return 1;		
			}
		}else{
			return 0;
		}
	}
	
	function setTransformationConditions($conditions) {
		$this->transformationConditions = $conditions;
	}
	
	
	/**
	 * Validation
	 */
	 
	function jsValidation() {
		$js = "";

		$fields = $this->FieldSet();
		$fields = new FieldSet($fields);
		// TODO doesn't automatically update validation when adding a row
		foreach($fields as $field) {
			//if the field type has some special specific specification for validation of itself
			$js .= $field->jsValidation($this->form->class."_".$this->form->PureName()); 
		}
		
		// TODO Implement custom requiredFields
		$items = $this->sourceItems(); 
		if($this->requiredFields&&$items->count()) {
			foreach ($this->requiredFields as $field) {
				/*if($fields->dataFieldByName($field)) {
					$js .= "\t\t\t\t\trequire('$field');\n";
				}*/
				foreach($items as $item){
					$cellName = $this->Name().'['.$item->ID.']['.$field.']';
					$js .= "\n";
					if($fields->dataFieldByName($cellName)) {
						$js .= <<<JS
if(typeof fromAnOnBlur != 'undefined'){
	if(fromAnOnBlur.name == '$cellName')
		require(fromAnOnBlur);
}else{
	require('$cellName');
}
JS;
					}
				}
			}
		}

		return $js;
	}
	
	function php($data) {
		$valid = true;
		
		if($data['methodName'] != 'delete'){
			$fields = $this->FieldSet();
			$fields = new FieldSet($fields);
			
		}else{
			return $valid;
		}
	}
	
	function validate($validator){
		$valid = true;
		$fields = $this->SubmittedFieldSet($sourceItemsNew);
		$fields = new FieldSet($fields);
		foreach($fields as $field){
			$valid = $field->validate($validator)&&$valid;
		}

		//debug::show($this->form->Message());
		if($this->requiredFields&&$sourceItemsNew&&$sourceItemsNew->count()) {
			foreach ($this->requiredFields as $field) {
				foreach($sourceItemsNew as $item){
					$cellName = $this->Name().'['.$item->ID.']['.$field.']';
					$cName =  $this->Name().'[new]['.$field.'][]';
					
					if($fieldObj = $fields->dataFieldByName($cellName)) {
						if(!trim($fieldObj->Value())){
							$title = $fieldObj->Title();
							$errorMessage .= "In $this->name '$title' is required.<br />";
						}
					}
				}
			}
		}

		if($errorMessage){
			$messageType .= "validation";
			$message .= "<br />".$errorMessage;
		
			$validator->validationError($this->name, $message, $messageType);
		}

		return $valid;
	}
	
	function setRequiredFields($fields) {
		$this->requiredFields = $fields;
	}
}

/**
 * encapsulation object for the table field. it stores the dataobject, 
 * and nessecary encapsulation fields
 */ 
class TableField_Item extends TableListField_Item {
	
	protected $fields;
	
	protected $data;
	
	protected $fieldTypes;
	
	protected $isAddRow;
	
	protected $extraData;
	
	/** 
	 * Each row contains a dataobject with any number of attributes
	 * @param $ID int The ID of the record
	 * @param $form Form A Form object containing all of the fields for this item.  The data should be loaded in
	 * @param $fieldTypes array An array of name => fieldtype for use when creating a new field
	 * @param $parent TableListField The parent table for quick reference of names, and id's for storing values.
	 */
	function __construct($item = null, $parent, $form, $fieldTypes, $isAddRow = false) {
		$this->data = $form;
		$this->fieldTypes = $fieldTypes;
		$this->isAddRow = $isAddRow;
		$this->item = $item;

		parent::__construct(($this->item) ? $this->item : new DataObject(), $parent);
		
		$this->fields = $this->createFields();
	}
	/** 
	 * Represents each cell of the table with an attribute 
	 */
	function createFields() {
		// Existing record
		if($this->item && $this->data) {
			$form = $this->data;
			$this->fieldset = $form->Fields();
			if($this->fieldset) {
				$i=0;
				foreach($this->fieldset as $field) {
					$origFieldName = $field->Name();

					// set unique fieldname with id
					$combinedFieldName = $this->parent->Name() . "[" . $this->ID . "][" . $origFieldName . "]";
					if($this->isAddRow) $combinedFieldName .= '[]';
					
					// get value
					if(strpos($origFieldName,'.') === false) {
						$value = $field->dataValue();
					} else {					
						// this supports the syntax fieldName = Relation.RelatedField				
						$fieldNameParts = explode('.', $origFieldName)	;
						$tmpItem = $this->item;
						for($j=0;$j<sizeof($fieldNameParts);$j++) {
							$relationMethod = $fieldNameParts[$j];
							$idField = $relationMethod . 'ID';
							if($j == sizeof($fieldNameParts)-1) {
								$value = $tmpItem->$relationMethod;
							} else {
								$tmpItem = $tmpItem->$relationMethod();
							}
						}
					}
					
					$field->Name = $combinedFieldName;
					$field->setValue($field->dataValue());
					$field->setExtraClass('col'.$i);
					$field->setForm($this->data);

					// transformation
					if(isset($this->parent->transformationConditions[$origFieldName])) {
						$transformation = $this->parent->transformationConditions[$origFieldName]['transformation'];
						$rule = str_replace("\$","\$this->item->", $this->parent->transformationConditions[$origFieldName]['rule']);
						$ruleApplies = null;
						eval('$ruleApplies = ('.$rule.');');
						if($ruleApplies) {
							$field = $field->$transformation();
						}
						
					}
					
					// formatting
					$item = $this->item;
					$value = $field->Value();
					if(array_key_exists($origFieldName, $this->parent->fieldFormatting)) {
						$format = str_replace('$value', "__VAL__", $this->parent->fieldFormatting[$origFieldName]);
						$format = preg_replace('/\$([A-Za-z0-9-_]+)/','$item->$1', $format);
						$format = str_replace('__VAL__', '$value', $format);
						eval('$value = "' . $format . '";');
						$field->dontEscape = true;
						$field->setValue($value);
					}
					
					$this->fields[] = $field;
					$i++;
				}
			}
		// New record
		} else {
			$list = $this->parent->FieldList();
			$i=0;
			foreach($list as $fieldName => $fieldTitle) {
				if(strpos($fieldName, ".")) {
					$shortFieldName = substr($fieldName, strpos($fieldName, ".")+1, strlen($fieldName));
				} else {
					$shortFieldName = $fieldName;
				}
				$combinedFieldName = $this->parent->Name() . "[new][" . $shortFieldName . "][]";
				$fieldType = $this->fieldTypes[$fieldName];
				if(isset($fieldType->class) && is_subclass_of($fieldType, 'FormField')) {
					$field = clone $fieldType; // we can't use the same instance all over, as we change names
					$field->Name = $combinedFieldName;
				} elseif(strpos($fieldType, '(') === false) {
					//echo ("<li>Type: ".$fieldType." fieldName: ". $filedName. " Title: ".$fieldTitle."</li>");
					$field = new $fieldType($combinedFieldName,$fieldTitle);
				} else {
					$field = eval("return new " . $fieldType . ";");
				}
				$field->setExtraClass('col'.$i);
				$this->fields[] = $field;
				$i++;
			}
		}
		
		return new DataObjectSet($this->fields);
	}
	
	function Fields() {
		return $this->fields;
	}
	
	function ExtraData() {
		$content = ""; 
		$id = ($this->item->ID) ? $this->item->ID : "new";
		if($this->parent->getExtraData()) {
			foreach($this->parent->getExtraData() as $fieldName=>$fieldValue) {
				$name = $this->parent->Name() . "[" . $id . "][" . $fieldName . "]";
				if($this->isAddRow) $name .= '[]';
				$field = new HiddenField($name, null, $fieldValue);
				$content .= $field->FieldHolder() . "\n";
			}
		}

		return $content;
	}
	
	function Can($mode) {
		return $this->parent->Can($mode);
	}
	
	function Parent() {
		return $this->parent;
	}
	
	/**
	 * Create the base link for the call below.
	 */
	function BaseLink() {
		$parent = $this->parent;
		$action = $parent->FormAction();
		if(substr($action, -1, 1) !== '&'){
			$action = $action."&";
		} 
		$action = str_replace('&', '&amp;', $action);

		return $action . "action_callfieldmethod=1&amp;fieldName=". $parent->Name() . "&amp;childID=" . $this->ID;
	}
	/**
	 * Runs the delete() method on the Tablefield parent.
	 * Allows the deletion of objects via ajax
	 */
	function DeleteLink() {
		return $this->BaseLink() . "&amp;methodName=delete";
	}

}

?>