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733 lines
29 KiB
PHP
Executable File
733 lines
29 KiB
PHP
Executable File
<?php // $Id$
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///////////////////////////////////////////////////////////////////////////
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// //
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// NOTICE OF COPYRIGHT //
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// //
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// Moodle - Modular Object-Oriented Dynamic Learning Environment //
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// http://moodle.org //
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// //
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// Copyright (C) 2005 Moodle Pty Ltd http://moodle.com //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details: //
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// //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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///////////////////////////////////////////////////////////////////////////
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/// Some constants
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define ('PARTICIPANTS_T', 1);
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define ('PARTICIPANTS_S', 2);
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define ('PARTICIPANTS_TS', 3);
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define ('DATAMAXENTRIES', 50);
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define ('PERPAGE_SINGLE', 1);
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class data_field_base { //base class (text field)
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var $type = 'text'; /// Base class implements "text" field type completely.
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var $id; //field id
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//constructor
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function data_field_base($fid=0){
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$this->id = $fid;
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}
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//returns the name/type of the field
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function name(){
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return get_string('name'.$this->type, 'data');
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}
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//prints the respective type icon
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function image(){
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global $CFG;
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return '<img src="'.$CFG->modpixpath.'/data/field/'.$this->type.'/icon.gif" height="16" width="16" border="0"
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alt="'.$this->type.'" title="'.$this->type.'">';
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}
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function insert_field($dataid, $type='text', $name, $des='', $autolink=0){
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$newfield = new object;
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$newfield->dataid = $dataid;
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$newfield->type = $type;
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$newfield->name = $name;
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$newfield->description = $des;
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$newfield->param1 = $autolink;
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if (!insert_record('data_fields',$newfield)){
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notify('Insertion of new field failed!');
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}
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}
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/***********************************************
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* prints the form element in the add template *
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* eg: *
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* Your Name: [ ] *
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***********************************************/
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function display_add_field($id, $rid=0){
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global $CFG;
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if (!$field = get_record('data_fields','id',$id)){
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notify("that is not a valid field id!");
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exit;
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}
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if ($rid){
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$content = get_record('data_content','fieldid',$id,'recordid',$rid);
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if (isset($content->content)){
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$content = $content->content;
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}
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}
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else {
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$content = '';
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}
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$str = '';
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if ($field->description){
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$str .= '<img src="'.$CFG->pixpath.'/help.gif" alt="'.$field->description.'" title="'.$field->description.'"> ';
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}
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$str .= '<input type="text" name="field_'.$field->id.'" id="field_'.$field->id.'" value="'.$content.'" />';
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return $str;
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}
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/**********************************************************************
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* prints the field that defines the attributes for editting a field, *
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* only accessible by teachers *
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* eg. *
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* name of the picture: [ ] *
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* size [ ] *
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* width [ ] *
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**********************************************************************/
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function display_edit_field($id, $dataid=0){
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global $CFG, $course;
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$newfield = 0;
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if (!$field = get_record('data_fields','id',$id)){
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if ($dataid){ //if is a new field
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$field->dataid = $dataid;
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$newfield = 1;
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$field->id = 0;
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$field->param1 = '';
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$field->param2 = '';
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$field->param3 = '';
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$field->name = '';
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$field->description = '';
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}
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else {
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notify("that is not a valid field id!");
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exit;
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}
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}
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print_simple_box_start('center','80%');
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require_once($CFG->dirroot.'/mod/data/field/'.$this->type.'/mod.html');
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print_simple_box_end();
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}
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/*********************************************************************
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* prints the browse mode content when viewed *
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* eg. *
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* [icon] Word.doc *
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**********************************************************************/
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function display_browse_field($fieldid, $recordid){
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if ($content = get_record('data_content', 'fieldid', $fieldid, 'recordid', $recordid)){
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if (isset($content->content)){
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$str = format_text($content->content, $content->content1);
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} else {
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$str = '';
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}
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return $str;
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}
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return false;
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}
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/****************************
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* updates a field *
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****************************/
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function update($fieldobject){
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//special thing is checking param1, if not present, set to 0
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$fieldobject->param1 = isset($fieldobject->param1)?$fieldobject->param1:0;
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if (!update_record('data_fields',$fieldobject)){
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notify ('upate failed');
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}
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}
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/************************************
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* store content of this field type *
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************************************/
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function store_data_content($fieldid, $recordid, $value, $name=''){
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$content = new object;
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$content->fieldid = $fieldid;
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$content->recordid = $recordid;
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$content->content = clean_param($value, PARAM_NOTAGS);
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insert_record('data_content', $content);
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}
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/*************************************
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* update content of this field type *
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*************************************/
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function update_data_content($fieldid, $recordid, $value, $name=''){
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//if data_content already exit, we update
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if ($oldcontent = get_record('data_content','fieldid', $fieldid, 'recordid', $recordid)){
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$content = new object;
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$content->fieldid = $fieldid;
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$content->recordid = $recordid;
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$content->content = clean_param($value, PARAM_NOTAGS);
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$content->id = $oldcontent->id;
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update_record('data_content',$content);
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}
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else { //make 1 if there isn't one already
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$this->store_data_content($fieldid, $recordid, $value, $name='');
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}
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}
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/*************************************************************
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* this function checks if a field from an add form is empty *
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* input $param string $value *
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* $param string $name *
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* output boolean *
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*************************************************************/
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function notemptyfield($value, $name){
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return !empty($value);
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}
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/*************************************************************************
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* This function checks if there's any file associated with this file, *
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* and is uploaded, if so, it deletes it. E.g file or picture type field *
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*************************************************************************/
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function delete_data_content_files($dataid, $recordid, $content){
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//does nothing
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}
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/*************************************************************************
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* This function prints anything that the field wants to output after *
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* the html form. This is handy for the javascript rich text editor *
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*************************************************************************/
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function print_after_form() {
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// Overridden as needed in sub classes.
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}
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}//end of class data_field_base
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///Field methods
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/*****************************************************************************
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/* Given a mode and a dataid, generate a default case template *
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* input @param mode - addtemplate, singletemplate, listtempalte, rsstemplate*
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* @param dataid *
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* output null *
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*****************************************************************************/
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function data_generate_default_form($dataid, $mode){
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if (!$dataid && !$mode){
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return false;
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}
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//get all the fields for that database
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if ($fields = get_records('data_fields','dataid',$dataid)){
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$data->id = $dataid;
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$str = ''; //the string to write to the given $data->{$mode}
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//this only applies to add and single template
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$str .= '<div align="center">';
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$str .= '<table>';
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foreach ($fields as $cfield){
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$str .= '<tr><td valign="top" align="right">';
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$str .= $cfield->name.':';
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$str .= '</td>';
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$str .='<td>';
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$str .= '[['.$cfield->name.']]';
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$str .= '</td></tr>';
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unset($g);
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}
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if ($mode!='addtemplate' and $mode!='rsstemplate'){ //if not adding, we put tags in there
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$str .= '<tr><td align="center" colspan="2">##Edit## ##More## ##Delete##</td></tr>';
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}
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$str .= '</table>';
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$str .= '</div>';
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if ($mode == 'listtemplate'){
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$str .= '<br />';
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}
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$data->{$mode} = $str;
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//make the header and footer for listtempalte
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update_record('data', $data);
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}
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}
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/*********************************************************
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* generates an empty add form, if there is none. *
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* input: @(int)id, id of the data *
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* output: null *
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*********************************************************/
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function data_generate_empty_add_form($id, $rid=0){
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$currentdata = get_record('data','id',$id);
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//check if there is an add entry
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if (!$currentdata->addtemplate){
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echo '<div align="center">'.get_string('emptyadd', 'data').'</div><p></p>';
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//get all the field entry, and print studnet version
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if ($fields = get_records('data_fields','dataid',$currentdata->id)){
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$str = ''; //the string to write to the given $data->{$mode}
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//this only applies to add and single template
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$str .= '<div align="center">';
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$str .= '<table><tr>';
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foreach ($fields as $cfield){
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$str .= '<td valign="top" align="right">';
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$str .= $cfield->name.':';
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$str .= '</td>';
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$str .='<td valign="top">';
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$g = data_get_field($cfield);
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$str .= $g->display_add_field($cfield->id,$rid);
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$str .= '</td>';
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unset($g);
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}
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$str .= '</tr></table>';
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$str .= '</div><p></p>';
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}
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echo $str;
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}
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}
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/************************************************************************
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* give a name in the format of field_## where ## is the field id, *
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* this function creates an instance of the particular subfield class *
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************************************************************************/
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function data_get_field_from_name($name){
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$namestring = explode('_',$name);
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$fieldid = $namestring[1];//the one after _ is the id.
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$field = get_record('data_fields','id',$fieldid);
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if ($field){
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return data_get_field($field);
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}
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}
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/************************************************************************
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* returns a subclass field object given a record of the field, used to *
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* invoke plugin methods *
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* input: $param $field - record from db *
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************************************************************************/
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function data_get_field($field){
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if ($field){
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require_once('field/'.$field->type.'/field.class.php');
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$newfield = 'data_field_'.$field->type;
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$newfield = new $newfield($field->id);
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return $newfield;
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}
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}
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/***************************************************************************
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* given record id, returns true if the record belongs to the current user *
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* input @param $rid - record id *
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* output bool *
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***************************************************************************/
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function data_isowner($rid){
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global $USER;
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if (empty($USER->id)) {
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return false;
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}
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if ($record = get_record('data_records','id',$rid)) {
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return ($record->userid == $USER->id);
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}
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return false;
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}
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/***********************************************************************
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* has a user reached the max number of entries? *
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* input object $data *
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* output bool *
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***********************************************************************/
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function data_atmaxentries($data){
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if (!$data->maxentries){
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return false;
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} else {
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return (data_numentries($data) >= $data->maxentries);
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}
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}
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/**********************************************************************
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* returns the number of entries already made by this user *
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* input @param object $data *
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* uses global $CFG, $USER *
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* output int *
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**********************************************************************/
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function data_numentries($data){
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global $USER;
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global $CFG;
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$sql = 'SELECT COUNT(*) FROM '.$CFG->prefix.'data_records WHERE dataid='.$data->id.' AND userid='.$USER->id;
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return count_records_sql($sql);
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}
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/****************************************************************
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* function that takes in a dataid and adds a record *
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* this is used everytime an add template is submitted *
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* input @param int $dataid, $groupid *
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* output bool *
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****************************************************************/
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function data_add_record($dataid, $groupid=0){
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global $USER;
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$record->userid = $USER->id;
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$record->groupid = $groupid;
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$record->dataid = $dataid;
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$record->timecreated = time();
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$record->timemodified = time();
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return insert_record('data_records',$record);
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}
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/*******************************************************************
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* check the multple existence any tag in a template *
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* input @param string *
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* output true-valid, false-invalid *
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* check to see if there are 2 or more of the same tag being used. *
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* input @param int $dataid, *
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* @param string $template *
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* output bool *
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*******************************************************************/
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function data_tags_check($dataid, $template){
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//first get all the possible tags
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$possiblefields = get_records('data_fields','dataid',$dataid);
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///then we generate strings to replace
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$tagsok = true; //let's be optimistic
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foreach ($possiblefields as $cfield){
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$pattern="/\[\[".$cfield->name."\]\]/i";
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if (preg_match_all($pattern, $template, $dummy)>1){
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$tagsok = false;
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notify ('[['.$cfield->name.']] - '.get_string('multipletags','data'));
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}
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}
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//else return true
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return $tagsok;
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}
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/************************************************************************
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* Adds an instance of a data *
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************************************************************************/
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function data_add_instance($data) {
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global $CFG;
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$data->timemodified = time();
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if (!empty($data->availablefromenable)) {
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$data->timeavailablefrom = make_timestamp($data->availablefromyear, $data->availablefrommonth, $data->availablefromday,
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$data->availablefromhour, $data->availablefromminute, 0);
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} else {
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$data->timeavailablefrom = 0;
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}
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if (!empty($data->availabletoenable)) {
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$data->timeavailableto = make_timestamp($data->availabletoyear, $data->availabletomonth, $data->availabletoday,
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$data->availabletohour, $data->availabletominute, 0);
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} else {
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$data->timeavailableto = 0;
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}
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if (!empty($data->viewfromenable)) {
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$data->timeviewfrom = make_timestamp($data->viewfromyear, $data->viewfrommonth, $data->viewfromday,
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$data->viewfromhour, $data->viewfromminute, 0);
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} else {
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$data->timeviewfrom = 0;
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}
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if (!empty($data->viewtoenable)) {
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$data->timeviewto = make_timestamp($data->viewtoyear, $data->viewtomonth, $data->viewtoday,
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$data->viewtohour, $data->viewtominute, 0);
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} else {
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$data->timeviewto = 0;
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}
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if (! $data->id = insert_record('data', $data)) {
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return false;
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}
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return $data->id;
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}
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/************************************************************************
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* updates an instance of a data *
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************************************************************************/
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function data_update_instance($data) {
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global $CFG;
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$data->id = $data->instance;
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$data->timemodified = time();
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if (!empty($data->availablefromenable)) {
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$data->timeavailablefrom = make_timestamp($data->availablefromyear, $data->availablefrommonth, $data->availablefromday,
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$data->availablefromhour, $data->availablefromminute, 0);
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} else {
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$data->timeavailablefrom = 0;
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}
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if (!empty($data->availabletoenable)) {
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$data->timeavailableto = make_timestamp($data->availabletoyear, $data->availabletomonth, $data->availabletoday,
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$data->availabletohour, $data->availabletominute, 0);
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} else {
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$data->timeavailableto = 0;
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}
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if (!empty($data->viewfromenable)) {
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$data->timeviewfrom = make_timestamp($data->viewfromyear, $data->viewfrommonth, $data->viewfromday,
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$data->viewfromhour, $data->viewfromminute, 0);
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} else {
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$data->timeviewfrom = 0;
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}
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if (!empty($data->viewtoenable)) {
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$data->timeviewto = make_timestamp($data->viewtoyear, $data->viewtomonth, $data->viewtoday,
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$data->viewtohour, $data->viewtominute, 0);
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} else {
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$data->timeviewto = 0;
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}
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if (! $data->instance = update_record('data', $data)) {
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return false;
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}
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return $data->instance;
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}
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/************************************************************************
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* deletes an instance of a data *
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************************************************************************/
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function data_delete_instance($id) { //takes the dataid
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global $CFG;
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if (! $data = get_record('data', 'id', $id)) {
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return false;
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}
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/// Delete all the associated information
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// get all the records in this data
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$sql = 'SELECT c.* FROM '.$CFG->prefix.'data_records as r LEFT JOIN '.
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$CFG->prefix.'data_content as c ON c.recordid = r.id WHERE r.dataid = '.$id;
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if ($contents = get_records_sql($sql)){
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foreach($contents as $content){
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|
|
$field = get_record('data_fields','id',$content->fieldid);
|
|
if ($g = data_get_field($field)){
|
|
$g->delete_data_content_files($id, $content->recordid, $content->content);
|
|
}
|
|
//delete the content itself
|
|
delete_records('data_content','id', $content->id);
|
|
}
|
|
}
|
|
|
|
// delete all the records and fields
|
|
delete_records('data_records', 'dataid', $id);
|
|
delete_records('data_fields','dataid',$id);
|
|
|
|
// Delete the instance itself
|
|
|
|
if (! delete_records('data', 'id', $id)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/************************************************************************
|
|
* returns a summary of data activity of this user *
|
|
************************************************************************/
|
|
function data_user_outline($course, $user, $mod, $data) {
|
|
|
|
global $USER, $CFG;
|
|
|
|
$sql = 'SELECT * from '.$CFG->prefix.'data_records WHERE dataid = "'.$data->id.'" AND userid = "'.$USER->id.'" ORDER BY timemodified DESC';
|
|
|
|
if ($records = get_records_sql($sql)){
|
|
$result->info = count($records).' '.get_string('numrecords', 'data');
|
|
$lastrecord = array_pop($records);
|
|
$result->time = $lastrecord->timemodified;
|
|
return $result;
|
|
}
|
|
return NULL;
|
|
|
|
}
|
|
|
|
/************************************************************************
|
|
* Prints all the records uploaded by this user *
|
|
************************************************************************/
|
|
function data_user_complete($course, $user, $mod, $data) {
|
|
|
|
global $USER, $CFG;
|
|
|
|
$sql = 'SELECT * from '.$CFG->prefix.'data_records WHERE dataid = "'.
|
|
$data->id.'" AND userid = "'.$USER->id.'" ORDER BY timemodified DESC';
|
|
|
|
if ($records = get_records_sql($sql)){
|
|
|
|
data_print_template($records, $data, '', 'singletemplate');
|
|
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
* returns a list of participants of this database *
|
|
************************************************************************/
|
|
function data_get_participants($dataid) {
|
|
//Returns the users with data in one resource
|
|
//(NONE, byt must exists on EVERY mod !!)
|
|
global $CFG;
|
|
|
|
$records = get_records_sql('SELECT DISTINCT u.id, u.id from '.$CFG->prefix.
|
|
'user u, '.$CFG->prefix.'data_records r WHERE r.dataid="'.$dataid.'"
|
|
AND u.id = r.userid');
|
|
|
|
$comments = get_records_sql('SELECT DISTINCT u.id, u.id from '.$CFG->prefix.
|
|
'user u, '.$CFG->prefix.'data_comments c WHERE dataid="'.$dataid.'"
|
|
AND u.id = c.userid');
|
|
|
|
$participants = array();
|
|
|
|
if ($records){
|
|
foreach ($records as $record) {
|
|
$participants[$record->id] = $record;
|
|
}
|
|
}
|
|
if ($comments){
|
|
foreach ($comments as $comment) {
|
|
$participants[$comment->id] = $comment;
|
|
}
|
|
}
|
|
|
|
return $participants;
|
|
}
|
|
|
|
function data_get_coursemodule_info($coursemodule) {
|
|
/// Given a course_module object, this function returns any
|
|
/// "extra" information that may be needed when printing
|
|
/// this activity in a course listing.
|
|
///
|
|
/// See get_array_of_activities() in course/lib.php
|
|
///
|
|
|
|
global $CFG;
|
|
|
|
$info = NULL;
|
|
|
|
return $info;
|
|
}
|
|
|
|
///junk functions
|
|
/************************************************************************
|
|
* takes a list of records, the current data, a search string, *
|
|
* and mode to display prints the translated template *
|
|
* input @param array $records *
|
|
* @param object $data *
|
|
* @param string $search *
|
|
* @param string $listmode *
|
|
* output null *
|
|
************************************************************************/
|
|
function data_print_template($records, $data, $search, $listmode){
|
|
global $CFG;
|
|
|
|
foreach ($records as $record){ //only 1 record for single mode
|
|
//replacing tags
|
|
$patterns = array();
|
|
$replacement = array();
|
|
if ($search){ //the ids are different for the 2 searches
|
|
$record->id = $record->recordid;
|
|
}
|
|
|
|
$possiblefields = get_records('data_fields','dataid',$data->id);
|
|
///then we generate strings to replace for normal tags
|
|
foreach ($possiblefields as $cfield){
|
|
$patterns[]='/\[\['.$cfield->name.'\]\]/i';
|
|
$g = data_get_field($cfield);
|
|
$replacement[] = highlight($search, $g->display_browse_field($cfield->id, $record->id));
|
|
unset($g);
|
|
}
|
|
///replacing special tags (##Edit##, ##Delete##, ##More##)
|
|
$patterns[]='/\#\#Edit\#\#/i';
|
|
$patterns[]='/\#\#Delete\#\#/i';
|
|
$patterns[]='/\#\#More\#\#/i';
|
|
|
|
if (data_isowner($record->id) or isteacheredit($course->id)){
|
|
$replacement[] = '<a href="'.$CFG->wwwroot.'/mod/data/add.php?d='
|
|
.$data->id.'&rid='.$record->id.'&sesskey='.sesskey().'"><img src="'.$CFG->pixpath.'/t/edit.gif" height="11" width="11" border="0" alt="'.get_string('edit').'" /></a>';
|
|
}else {
|
|
$replacement[] = '';
|
|
}
|
|
|
|
if (data_isowner($record->id) or isteacheredit($course->id)){
|
|
$replacement[] = '<a href="'.$CFG->wwwroot.'/mod/data/view.php?d='
|
|
.$data->id.'&delete='.$record->id.'&sesskey='.sesskey().'"><img src="'.$CFG->pixpath.'/t/delete.gif" height="11" width="11" border="0" alt="'.get_string('delete').'" /></a>';
|
|
}else {
|
|
$replacement[] = '';
|
|
}
|
|
$replacement[] = '<a href="'.$CFG->wwwroot.'/mod/data/view.php?d='
|
|
.$data->id.'&rid='.$record->id.'"><img src="'.$CFG->pixpath.'/i/search.gif" height="11" width="11" border="0" alt="'.get_string('more').'" /></a>';
|
|
|
|
///actual replacement of the tags
|
|
$newtext = preg_replace($patterns, $replacement, $data->{$listmode});
|
|
|
|
echo $newtext; //prints the template with tags replaced
|
|
echo '<p></p>';
|
|
}
|
|
}
|
|
|
|
/************************************************************************
|
|
* function that takes in the current data, number of items per page, *
|
|
* a search string and prints a preference box in view.php *
|
|
* input @param object $data *
|
|
* @param int $perpage *
|
|
* @param string $search *
|
|
* output null *
|
|
************************************************************************/
|
|
function data_print_preference_form($data, $perpage, $search){
|
|
echo '<br />';
|
|
echo '<form name="options" action="view.php?d='.$data->id.'&search='.s($search).'" method="post">';
|
|
echo '<table id="optiontable" align="center">';
|
|
echo '<tr><td>'.get_string('search').'</td>';
|
|
echo '<td><input type="text" size = "16" name="search" value="'.s($search).'" />';
|
|
echo '</td></tr>';
|
|
echo '<tr align="right"><td>';
|
|
echo '<label for="perpage">'.get_string('pagesize','data').'</label>';
|
|
echo ':</td>';
|
|
echo '<input type="hidden" id="updatepref" name="updatepref" value="1" />';
|
|
echo '<td align="left">';
|
|
$pagesizes = array(1=>1,2=>2,3=>3,4=>4,5=>5,6=>6,7=>7,8=>8,9=>9,10=>10,15=>15,20=>20,30=>30,40=>40,50=>50);
|
|
choose_from_menu($pagesizes,'perpage1',$perpage,'choose','','0');
|
|
echo '<input type="text" id="perpage" name="perpage" size="2" value="'.$perpage.'" />';
|
|
echo '</td></tr>';
|
|
echo '<tr>';
|
|
echo '<td colspan="2" align="center">';
|
|
echo '<input type="submit" value="'.get_string('savepreferences').'" />';
|
|
echo '</td></tr></table>';
|
|
echo '</form>';
|
|
}
|
|
|
|
|
|
|
|
|
|
?>
|