Current File : /home/vacivi36/ava/admin/tool/xmldb/actions/delete_field/delete_field.class.php
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* @package tool_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_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 = '<table width="60" class="generaltable" border="0" cellpadding="5" cellspacing="0" id="notice">';
$o.= ' <tr><td class="generalboxcontent">';
$o.= ' <p class="centerpara">' . $this->str['confirmdeletefield'] . '<br /><br />' . $fieldparam . '</p>';
$o.= ' <table class="boxaligncenter" cellpadding="20"><tr><td>';
$o.= ' <div class="singlebutton">';
$o.= ' <form action="index.php?action=delete_field&sesskey=' . sesskey() . '&confirmed=yes&postaction=edit_table&field=' . $fieldparam . '&table=' . $tableparam . '&dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '" method="post"><fieldset class="invisiblefieldset">';
$o.= ' <input type="submit" value="'. $this->str['yes'] .'" /></fieldset></form></div>';
$o.= ' </td><td>';
$o.= ' <div class="singlebutton">';
$o.= ' <form action="index.php?action=edit_table&table=' . $tableparam . '&dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '" method="post"><fieldset class="invisiblefieldset">';
$o.= ' <input type="submit" value="'. $this->str['no'] .'" /></fieldset></form></div>';
$o.= ' </td></tr>';
$o.= ' </table>';
$o.= ' </td></tr>';
$o.= '</table>';
$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;
}
}
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