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Long Term Support Release
1 <?php 2 // This file is part of Moodle - http://moodle.org/ 3 // 4 // Moodle is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // Moodle is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 16 17 /** 18 * @package tool_xmldb 19 * @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com} 20 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 21 */ 22 23 /** 24 * This class will delete completely one field 25 * 26 * @package tool_xmldb 27 * @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com} 28 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 29 */ 30 class delete_field extends XMLDBAction { 31 32 /** 33 * Init method, every subclass will have its own 34 */ 35 function init() { 36 parent::init(); 37 38 // Set own custom attributes 39 40 // Get needed strings 41 $this->loadStrings(array( 42 'confirmdeletefield' => 'tool_xmldb', 43 'yes' => '', 44 'no' => '' 45 )); 46 } 47 48 /** 49 * Invoke method, every class will have its own 50 * returns true/false on completion, setting both 51 * errormsg and output as necessary 52 */ 53 function invoke() { 54 parent::invoke(); 55 56 $result = true; 57 58 // Set own core attributes 59 $this->does_generate = ACTION_GENERATE_HTML; 60 61 // These are always here 62 global $CFG, $XMLDB; 63 64 // Do the job, setting result as needed 65 66 // Get the dir containing the file 67 $dirpath = required_param('dir', PARAM_PATH); 68 $dirpath = $CFG->dirroot . $dirpath; 69 $tableparam = required_param('table', PARAM_CLEAN); 70 $fieldparam = required_param('field', PARAM_CLEAN); 71 72 $confirmed = optional_param('confirmed', false, PARAM_BOOL); 73 74 // If not confirmed, show confirmation box 75 if (!$confirmed) { 76 $o = '<table width="60" class="generaltable" border="0" cellpadding="5" cellspacing="0" id="notice">'; 77 $o.= ' <tr><td class="generalboxcontent">'; 78 $o.= ' <p class="centerpara">' . $this->str['confirmdeletefield'] . '<br /><br />' . $fieldparam . '</p>'; 79 $o.= ' <table class="boxaligncenter" cellpadding="20"><tr><td>'; 80 $o.= ' <div class="singlebutton">'; 81 $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">'; 82 $o.= ' <input type="submit" value="'. $this->str['yes'] .'" /></fieldset></form></div>'; 83 $o.= ' </td><td>'; 84 $o.= ' <div class="singlebutton">'; 85 $o.= ' <form action="index.php?action=edit_table&table=' . $tableparam . '&dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '" method="post"><fieldset class="invisiblefieldset">'; 86 $o.= ' <input type="submit" value="'. $this->str['no'] .'" /></fieldset></form></div>'; 87 $o.= ' </td></tr>'; 88 $o.= ' </table>'; 89 $o.= ' </td></tr>'; 90 $o.= '</table>'; 91 92 $this->output = $o; 93 } else { 94 // Get the edited dir 95 if (!empty($XMLDB->editeddirs)) { 96 if (isset($XMLDB->editeddirs[$dirpath])) { 97 $dbdir = $XMLDB->dbdirs[$dirpath]; 98 $editeddir = $XMLDB->editeddirs[$dirpath]; 99 if ($editeddir) { 100 $structure = $editeddir->xml_file->getStructure(); 101 // Move adjacent fields prev and next attributes 102 $tables = $structure->getTables(); 103 $table = $structure->getTable($tableparam); 104 $fields = $table->getFields(); 105 $field = $table->getField($fieldparam); 106 if ($field->getPrevious()) { 107 $prev = $table->getField($field->getPrevious()); 108 $prev->setNext($field->getNext()); 109 } 110 if ($field->getNext()) { 111 $next = $table->getField($field->getNext()); 112 $next->setPrevious($field->getPrevious()); 113 } 114 // Remove the field 115 $table->deleteField($fieldparam); 116 117 // Recalculate the hash 118 $structure->calculateHash(true); 119 120 // If the hash has changed from the original one, change the version 121 // and mark the structure as changed 122 $origstructure = $dbdir->xml_file->getStructure(); 123 if ($structure->getHash() != $origstructure->getHash()) { 124 $structure->setVersion(userdate(time(), '%Y%m%d', 99, false)); 125 $structure->setChanged(true); 126 } 127 } 128 } 129 } 130 } 131 132 // Launch postaction if exists (leave this here!) 133 if ($this->getPostAction() && $result) { 134 return $this->launch($this->getPostAction()); 135 } 136 137 // Return ok if arrived here 138 return $result; 139 } 140 } 141
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