. /** * @package tool * @subpackage xmldb * @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com} * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ /** * This class will delete completely one field * * @package tool * @subpackage xmldb * @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com} * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class delete_field extends XMLDBAction { /** * Init method, every subclass will have its own */ function init() { parent::init(); // Set own custom attributes // Get needed strings $this->loadStrings(array( 'confirmdeletefield' => 'tool_xmldb', 'yes' => '', 'no' => '' )); } /** * Invoke method, every class will have its own * returns true/false on completion, setting both * errormsg and output as necessary */ function invoke() { parent::invoke(); $result = true; // Set own core attributes $this->does_generate = ACTION_GENERATE_HTML; // These are always here global $CFG, $XMLDB; // Do the job, setting result as needed // Get the dir containing the file $dirpath = required_param('dir', PARAM_PATH); $dirpath = $CFG->dirroot . $dirpath; $tableparam = required_param('table', PARAM_CLEAN); $fieldparam = required_param('field', PARAM_CLEAN); $confirmed = optional_param('confirmed', false, PARAM_BOOL); // If not confirmed, show confirmation box if (!$confirmed) { $o = ''; $o.= ' '; $o.= '

'; $o.= '

' . $this->str['confirmdeletefield'] . '

' . $fieldparam . '

'; $o.= ' '; $o.= '

'; $o.= '

'; $this->output = $o; } else { // Get the edited dir if (!empty($XMLDB->editeddirs)) { if (isset($XMLDB->editeddirs[$dirpath])) { $dbdir =& $XMLDB->dbdirs[$dirpath]; $editeddir =& $XMLDB->editeddirs[$dirpath]; if ($editeddir) { $structure =& $editeddir->xml_file->getStructure(); // Move adjacent fields prev and next attributes $tables =& $structure->getTables(); $table =& $structure->getTable($tableparam); $fields =& $table->getFields(); $field =& $table->getField($fieldparam); if ($field->getPrevious()) { $prev =& $table->getField($field->getPrevious()); $prev->setNext($field->getNext()); } if ($field->getNext()) { $next =& $table->getField($field->getNext()); $next->setPrevious($field->getPrevious()); } // Remove the field $table->deleteField($fieldparam); // Recalculate the hash $structure->calculateHash(true); // If the hash has changed from the original one, change the version // and mark the structure as changed $origstructure =& $dbdir->xml_file->getStructure(); if ($structure->getHash() != $origstructure->getHash()) { $structure->setVersion(userdate(time(), '%Y%m%d', 99, false)); $structure->setChanged(true); } } } } } // Launch postaction if exists (leave this here!) if ($this->getPostAction() && $result) { return $this->launch($this->getPostAction()); } // Return ok if arrived here return $result; } }