admin/xmldb/actions/edit_sentence_save/edit_sentence_save.class.php

   1 <?php // $Id$
   2
   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 ///////////////////////////////////////////////////////////////////////////
  26
  27 /// This class will save the changes performed to one sentence
  28
  29 class edit_sentence_save extends XMLDBAction {
  30
  31     /**
  32      * Init method, every subclass will have its own
  33      */
  34     function init() {
  35         parent::init();
  36
  37     /// Set own custom attributes
  38
  39     /// Get needed strings
  40         $this->loadStrings(array(
  41             'cannotuseidfield' => 'xmldb',
  42             'missingfieldsinsentence' => 'xmldb',
  43             'missingvaluesinsentence' => 'xmldb',
  44             'wrongnumberoffieldsorvalues' => 'xmldb',
  45             'administration' => ''
  46         ));
  47     }
  48
  49     /**
  50      * Invoke method, every class will have its own
  51      * returns true/false on completion, setting both
  52      * errormsg and output as necessary
  53      */
  54     function invoke() {
  55         parent::invoke();
  56
  57         $result = true;
  58
  59     /// Set own core attributes
  60         $this->does_generate = ACTION_NONE;
  61         //$this->does_generate = ACTION_GENERATE_HTML;
  62
  63     /// These are always here
  64         global $CFG, $XMLDB;
  65
  66     /// Do the job, setting result as needed
  67
  68     /// Get parameters
  69         $dirpath = required_param('dir', PARAM_PATH);
  70         $dirpath = $CFG->dirroot . stripslashes_safe($dirpath);
  71
  72         $statementparam = strtolower(required_param('statement', PARAM_CLEAN));
  73         $sentenceparam = strtolower(required_param('sentence', PARAM_ALPHANUM));
  74
  75         $fields = required_param('fields', PARAM_CLEAN);
  76         $fields = trim(stripslashes_safe($fields));
  77         $values = required_param('values', PARAM_CLEAN);
  78         $values = trim(stripslashes_safe($values));
  79
  80         $editeddir =& $XMLDB->editeddirs[$dirpath];
  81         $structure =& $editeddir->xml_file->getStructure();
  82         $statement =& $structure->getStatement($statementparam);
  83         $sentences =& $statement->getSentences();
  84
  85         $oldsentence = $sentences[$sentenceparam];
  86
  87         if (!$statement) {
  88             $this->errormsg = 'Wrong statement specified: ' . $statementparam;
  89             return false;
  90         }
  91
  92     /// For now, only insert sentences are allowed
  93         if ($statement->getType() != XMLDB_STATEMENT_INSERT) {
  94             $this->errormsg = 'Wrong Statement Type. Only INSERT allowed';
  95             return false;
  96         }
  97
  98         $errors = array();    /// To store all the errors found
  99
 100     /// Build the whole sentence
 101         $sentence = '(' . $fields . ') VALUES (' . $values . ')';
 102
 103     /// Perform some checks
 104         $fields = $statement->getFieldsFromInsertSentence($sentence);
 105         $values = $statement->getValuesFromInsertSentence($sentence);
 106
 107         if (in_array('id', $fields)) {
 108             $errors[] = $this->str['cannotuseidfield'];
 109         }
 110         if ($result && count($fields) == 0) {
 111             $errors[] = $this->str['missingfieldsinsentence'];
 112         }
 113         if ($result && count($values) == 0) {
 114             $errors[] = $this->str['missingvaluesinsentence'];
 115         }
 116         if ($result && count($fields) != count($values)) {
 117             $errors[] = $this->str['wrongnumberoffieldsorvalues'];
 118         }
 119
 120         if (!empty($errors)) {
 121         /// Prepare the output
 122             $site = get_site();
 123             print_header("$site->shortname: XMLDB",
 124                          "$site->fullname",
 125                          "<a href=\"../index.php\">" . $this->str['administration'] . "</a> -> <a href=\"index.php\">XMLDB</a>");
 126             notice ('<p>' .implode(', ', $errors) . '</p>
 127                      <p>' . s($sentence),
 128                     'index.php?action=edit_sentence&amp;sentence=' .$sentenceparam . '&amp;statement=' . urlencode($statementparam) . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)));
 129             die; /// re-die :-P
 130         }
 131
 132     /// Continue if we aren't under errors
 133         if (empty($errors)) {
 134             $sentences[$sentenceparam] = $sentence;
 135
 136         /// If the sentence has changed from the old one, change the version
 137         /// and mark the statement and structure as changed
 138             if ($oldsentence != $sentence) {
 139                 $statement->setChanged(true);
 140                 $structure->setVersion(userdate(time(), '%Y%m%d', 99, false));
 141             /// Mark as changed
 142                 $structure->setChanged(true);
 143             }
 144
 145         /// Launch postaction if exists (leave this here!)
 146             if ($this->getPostAction() && $result) {
 147                 return $this->launch($this->getPostAction());
 148             }
 149         }
 150
 151     /// Return ok if arrived here
 152         return $result;
 153     }
 154 }
 155 ?>