Automatic installer.php lang files by installer_builder (20070726)
[moodle-linuxchix.git] / admin / xmldb / actions / delete_field / delete_field.class.php
blob3bdee9aa4006d3a063dccefda7da52fcad2debbe
1 <?php // $Id$
3 ///////////////////////////////////////////////////////////////////////////
4 // //
5 // NOTICE OF COPYRIGHT //
6 // //
7 // Moodle - Modular Object-Oriented Dynamic Learning Environment //
8 // http://moodle.com //
9 // //
10 // Copyright (C) 2001-3001 Martin Dougiamas http://dougiamas.com //
11 // (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com //
12 // //
13 // This program is free software; you can redistribute it and/or modify //
14 // it under the terms of the GNU General Public License as published by //
15 // the Free Software Foundation; either version 2 of the License, or //
16 // (at your option) any later version. //
17 // //
18 // This program is distributed in the hope that it will be useful, //
19 // but WITHOUT ANY WARRANTY; without even the implied warranty of //
20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
21 // GNU General Public License for more details: //
22 // //
23 // http://www.gnu.org/copyleft/gpl.html //
24 // //
25 ///////////////////////////////////////////////////////////////////////////
27 /// This class will delete completely one field
29 class delete_field extends XMLDBAction {
31 /**
32 * Init method, every subclass will have its own
34 function init() {
35 parent::init();
37 /// Set own custom attributes
39 /// Get needed strings
40 $this->loadStrings(array(
41 'confirmdeletefield' => 'xmldb',
42 'yes' => '',
43 'no' => ''
44 ));
47 /**
48 * Invoke method, every class will have its own
49 * returns true/false on completion, setting both
50 * errormsg and output as necessary
52 function invoke() {
53 parent::invoke();
55 $result = true;
57 /// Set own core attributes
58 $this->does_generate = ACTION_GENERATE_HTML;
60 /// These are always here
61 global $CFG, $XMLDB;
63 /// Do the job, setting result as needed
65 /// Get the dir containing the file
66 $dirpath = required_param('dir', PARAM_PATH);
67 $dirpath = $CFG->dirroot . stripslashes_safe($dirpath);
68 $tableparam = required_param('table', PARAM_CLEAN);
69 $fieldparam = required_param('field', PARAM_CLEAN);
71 $confirmed = optional_param('confirmed', false, PARAM_BOOL);
73 /// If not confirmed, show confirmation box
74 if (!$confirmed) {
75 $o = '<table width="60" class="generalbox" border="0" cellpadding="5" cellspacing="0" id="notice">';
76 $o.= ' <tr><td class="generalboxcontent">';
77 $o.= ' <p class="centerpara">' . $this->str['confirmdeletefield'] . '<br /><br />' . $fieldparam . '</p>';
78 $o.= ' <table class="boxaligncenter" cellpadding="20"><tr><td>';
79 $o.= ' <div class="singlebutton">';
80 $o.= ' <form action="index.php?action=delete_field&amp;confirmed=yes&amp;postaction=edit_table&amp;field=' . $fieldparam . '&amp;table=' . $tableparam . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '" method="post"><fieldset class="invisiblefieldset">';
81 $o.= ' <input type="submit" value="'. $this->str['yes'] .'" /></fieldset></form></div>';
82 $o.= ' </td><td>';
83 $o.= ' <div class="singlebutton">';
84 $o.= ' <form action="index.php?action=edit_table&amp;table=' . $tableparam . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '" method="post"><fieldset class="invisiblefieldset">';
85 $o.= ' <input type="submit" value="'. $this->str['no'] .'" /></div></form></fieldset>';
86 $o.= ' </td></tr>';
87 $o.= ' </table>';
88 $o.= ' </td></tr>';
89 $o.= '</table>';
91 $this->output = $o;
92 } else {
93 /// Get the edited dir
94 if (!empty($XMLDB->editeddirs)) {
95 if (isset($XMLDB->editeddirs[$dirpath])) {
96 $dbdir =& $XMLDB->dbdirs[$dirpath];
97 $editeddir =& $XMLDB->editeddirs[$dirpath];
98 if ($editeddir) {
99 $structure =& $editeddir->xml_file->getStructure();
100 /// Move adjacent fields prev and next attributes
101 $tables =& $structure->getTables();
102 $table =& $structure->getTable($tableparam);
103 $fields =& $table->getFields();
104 $field =& $table->getField($fieldparam);
105 if ($field->getPrevious()) {
106 $prev =& $table->getField($field->getPrevious());
107 $prev->setNext($field->getNext());
109 if ($field->getNext()) {
110 $next =& $table->getField($field->getNext());
111 $next->setPrevious($field->getPrevious());
113 /// Remove the field
114 $table->deleteField($fieldparam);
116 /// Recalculate the hash
117 $structure->calculateHash(true);
119 /// If the hash has changed from the original one, change the version
120 /// and mark the structure as changed
121 $origstructure =& $dbdir->xml_file->getStructure();
122 if ($structure->getHash() != $origstructure->getHash()) {
123 $structure->setVersion(userdate(time(), '%Y%m%d', 99, false));
124 $structure->setChanged(true);
131 /// Launch postaction if exists (leave this here!)
132 if ($this->getPostAction() && $result) {
133 return $this->launch($this->getPostAction());
136 /// Return ok if arrived here
137 return $result;