silverstripe-framework/forms/ReportField.php

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<?php
/**
* @package sapphire
* @subpackage forms
*/
/**
* Displays complex reports based on the list of tables and fields provided to
* the object.
*/
class ReportField extends FormField{
protected $tables;
protected $primaryKeys;
protected $fields;
protected $filter;
protected $primaryClass;
protected $sort;
protected $export = true;
/**
* Construct a report field.
*
* @param name Name of the report field
* @param title Title of the report field as displayed in the CMS.
* @param tables Array of primary keys indexed by the names of the tables.
* @param fields Array of fields indexed by the name of the table.
*/
function __construct($name, $title, $tables, $fields, $hideByDefault = null, $defaultSort = null, $form = null) {
parent::__construct( $name, $title, "", $form );
if( !is_array( $tables ) )
user_error( "Third parameter must be an array. Table Name => Primary Key Column", E_USER_ERROR );
else {
$this->tables = array_keys( $tables );
$this->primaryKeys = $tables;
$this->primaryClass = $this->tables[0];
}
if( !is_array( $fields ) )
$this->fields = array( $fields );
else
$this->fields = $this->expandWildcards( $fields );
}
public function setExport($export){
$this->export = $export;
}
protected function expandWildcards( $fields ) {
$newFields = array();
foreach( $fields as $field )
if( preg_match( '/.*\.\*/', $field ) )
$newFields = $newFields + $this->expandWildcard( $field );
else
$newFields[] = $field;
return $newFields;
}
protected function expandWildcard( $field ) {
list( $table, $column ) = $this->parseField( $field );
foreach( $this->getColumnsInTable( $table ) as $newColumn )
$columns[] = $table.'.'.$newColumn;
return $columns;
}
function exportToCSV( $fileName ) {
$fileData = $this->columnheaders( 'csvRow', 'csvCell' ) . $this->datacells( 'csvRow', 'csvCell' );
header("Content-Type: text/csv; name=\"" . addslashes($fileName) . "\"");
header("Content-Disposition: attachment; filename=\"" . addslashes($fileName) . "\"");
header("Content-length: " . strlen($fileData));
echo $fileData;
exit();
}
function FieldHolder() {
Requirements::javascript("sapphire/javascript/ReportField.js");
$headerHTML = $this->columnheaders();
$dataCellHTML = $this->datacells();
$id = $this->id() . '_exportToCSV';
if($this->export){
$exportButton =<<<HTML
<input name="$id" type="submit" id="$id" class="ReportField_ExportToCSVButton" value="Export to CSV" />
HTML
;
}else{
$exportButton = "";
}
// display the table of results
$html = <<<HTML
<div style="width: 98%; overflow: auto">
$exportButton
<table class="ReportField" summary="">
<thead>
$headerHTML
</thead>
<tbody>
$dataCellHTML
</tbody>
</table>
</div>
HTML;
return $html;
}
/**
* Returns the HTML for the data cells for the current report.
* This can be used externally via ajax as the report might be filtered per column.
* It is also used internally to display the data cells.
*/
public function datacells( $rowCallBack = 'htmlTableRow', $cellCallBack = 'htmlTableCell' ) {
// get the primary records in the database, sorted according to the current sort
// this will need to be corrected later on
$primaryRecords = $this->getRecords();
/*echo "ERROR:";
Debug::show( $primaryRecords );
die();*/
$html = "";
foreach( $primaryRecords as $record ) {
$rowOutput = "";
foreach( $this->fields as $field ) {
if( $field{0} == '!' ) $field = substr( $field, 1 );
list( $table, $column ) = $this->parseField( $field );
if( $this->filter && !$this->filter->showColumn( $table, $column ) )
continue;
$rowOutput .= $this->$cellCallBack( $record[$field], $table, $column );
}
$html .= $this->$rowCallBack( $rowOutput, $table, null );
}
return $html;
}
/**
* Returns the HTML for the headers of the columns.
* Can also be called via ajax to reload the headers.
*/
public function columnheaders( $rowCallBack = 'htmlTableRow', $cellCallBack = 'htmlHeaderCell' ) {
foreach( $this->fields as $field ) {
list( $table, $column ) = $this->parseField( $field );
if( $this->filter && !$this->filter->showColumn( $table, $column ) )
continue; // replace this with some code to show a 'hidden' column
/*if( $column == '*' )
foreach( $this->getColumnsInTable( $table ) as $extraColumn )
$html .= $this->$cellCallBack( $extraColumn, $table, $extraColumn );
else */
$html .= $this->$cellCallBack( $column, $table, $column );
}
return $this->$rowCallBack( $html, null, null );
}
protected function getColumnsInTable( $table ) {
$result = DB::query( "SELECT * FROM `$table` LIMIT 1" );
return array_keys( $result->next() );
}
protected function parseField( $field ) {
if( $field{0} == '!' )
$field = substr( $field, 1 );
if( strpos( $field, '.' ) !== FALSE )
return explode( '.', $field );
else
return $field;
}
/**
* Joins the given record together with the extra information in the other tables.
* This is only used in a situation in which the database can't do the join and I'll
* correct it when I figure out how to use buildSQL
*/
protected function joinRecord( $object ) {
return $object;
// split the list of fields into table, column and group by table.
/*$tableColumns = array();
foreach( $this->fields as $field ) {
list( $table, $column ) = $this->parseField( $field );
$tableColumns[$table][] = $column;
}
$primaryKey = $this->primaryKeys[$object->class];
if( !$primaryKey ) foreach( ClassInfo::ancestry( $object->class ) as $baseClass )
$primaryKey = $this->primaryKeys[$baseClass];
$primaryKeyValue = $object->$primaryKey;
// get the fields from the object
$completeRecord = $this->joinFields( $object, $tableColumn[$this->primaryClass] );
foreach( $tableColumns as $className => $classFields ) {
$joinKey = $this->primaryKeys[$className];
// get the all the extra fields.
$recordObj = DataObject::get_one( $className, "`$className`.`$joinKey`='$primaryKeyValue'" );
$completeRecord = $completeRecord + $this->joinFields( $recordObj, $fields );
}
return $completeRecord;*/
}
protected function joinFields( $object, $fields ) {
$partialRecord = array();
foreach( $fields as $field )
$partialRecord[$object->class.'.'.$field] = $object->$field;
return $partialRecord;
}
/**
* Sort the data in the cells
*/
public function sortdata() {
}
/**
* Get the primary set of records for the cells. This returns a data object set.
*/
protected function getRecords() {
// $_REQUEST['showqueries'] = 1;
$tableColumns = array();
$selectFields = array();
$joins = array( "`{$this->primaryClass}`" );
foreach( $this->fields as $field ) {
if( $field{0} == '!' )
continue;
list( $table, $column ) = $this->parseField( $field );
$tableColumns[$table][] = $column;
if( $column == '*' )
$selectFields[] = "`$table`.*";
else
$selectFields[] = "`$table`.`$column` AS '$table.$column'";
}
foreach( array_keys( $tableColumns ) as $table ) {
$tableKey = $this->primaryKeys[$table];
$primaryKey = $this->primaryKeys[$this->primaryClass];
if( $table != $this->primaryClass )
$joins[] = "LEFT JOIN `$table` ON `$table`.`$tableKey`=`{$this->primaryClass}`.`$primaryKey`";
}
$query = new SQLQuery( $selectFields, $joins );
return $query->execute();
}
function htmlHeaderCell( $value, $table, $column ) {
return "<th>" . htmlentities( $value ) . "</th>";
}
function htmlTableCell( $value, $table, $column ) {
return "<td>" . htmlentities( $value ) . "</td>";
}
function htmlTableRow( $value, $table, $column ) {
return "<tr>" . $value . "</tr>";
}
function csvCell( $value, $table, $column ) {
return '"' . str_replace( '"', '""', $value ) . '",';
}
function csvRow( $value, $table, $column ) {
return substr( $value, 0, strlen( $value ) - 1 )."\n";
}
}
/**
* Assisting class. Determines whether or not a column is hidden.
* Not so helpful here, but we could overload it in other classes.
*/
class ReportField_SimpleFilter extends Object {
protected $hiddenFields;
function __construct( $hiddenColumns ) {
$this->hiddenFields = $hiddenColumns;
}
function columnIsVisible( $table, $column ) {
return !isset( $this->hiddenFields[$table.'.'.$column] );
}
function showColumn( $table, $column ) {
unset( $this->hiddenFields[$table.'.'.$column] );
}
function hideColumn( $table, $column ) {
$this->hiddenFields[$table.'.'.$column] = 1;
}
}
/**
* This class instantiates an instance of the report field and receives ajax requests
* to the report field.
*/
class ReportField_Controller extends Controller {
function exporttocsv() {
if( $this->urlParams['Type'] != 'ReportField' && ClassInfo::exists( $this->urlParams['Type'].'_Controller' ) ) {
$type = $this->urlParams['Type'].'_Controller';
$controller = new $type();
return $controller->exporttocsv( $this->urlParams['ID'] );
}
$pageID = $this->urlParams['ID'];
if( !$pageID )
return "ERROR:Page does not exist";
$page = DataObject::get_by_id( 'SiteTree', $pageID );
if( !$page )
return "ERROR:Page does not exist";
$formName = substr( $this->urlParams['OtherID'], 0, -4 );
$reportField = $page->getReportField( $formName );
// apply filters
$fileName = $page->URLSegment . "-report.csv";
$reportField->exportToCSV( $fileName );
}
function Link() {
return "";
}
}
?>