user/filters/profilefield.php

   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  * Profile field filter.
  19  *
  20  * @package   core_user
  21  * @category  user
  22  * @copyright 1999 Martin Dougiamas  http://dougiamas.com
  23  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 require_once($CFG->dirroot.'/user/filters/lib.php');
  27
  28 /**
  29  * User filter based on values of custom profile fields.
  30  *
  31  * @copyright 1999 Martin Dougiamas  http://dougiamas.com
  32  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  33  */
  34 class user_filter_profilefield extends user_filter_type {
  35
  36     /**
  37      * Constructor
  38      * @param string $name the name of the filter instance
  39      * @param string $label the label of the filter instance
  40      * @param boolean $advanced advanced form element flag
  41      */
  42     public function __construct($name, $label, $advanced) {
  43         parent::__construct($name, $label, $advanced);
  44     }
  45
  46     /**
  47      * Old syntax of class constructor. Deprecated in PHP7.
  48      *
  49      * @deprecated since Moodle 3.1
  50      */
  51     public function user_filter_profilefield($name, $label, $advanced) {
  52         debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
  53         self::__construct($name, $label, $advanced);
  54     }
  55
  56     /**
  57      * Returns an array of comparison operators
  58      * @return array of comparison operators
  59      */
  60     public function get_operators() {
  61         return array(0 => get_string('contains', 'filters'),
  62                      1 => get_string('doesnotcontain', 'filters'),
  63                      2 => get_string('isequalto', 'filters'),
  64                      3 => get_string('startswith', 'filters'),
  65                      4 => get_string('endswith', 'filters'),
  66                      5 => get_string('isempty', 'filters'),
  67                      6 => get_string('isnotdefined', 'filters'),
  68                      7 => get_string('isdefined', 'filters'));
  69     }
  70
  71     /**
  72      * Returns an array of custom profile fields
  73      * @return array of profile fields
  74      */
  75     public function get_profile_fields() {
  76         global $DB;
  77         if (!$fields = $DB->get_records('user_info_field', null, 'shortname', 'id,shortname')) {
  78             return null;
  79         }
  80         $res = array(0 => get_string('anyfield', 'filters'));
  81         foreach ($fields as $k => $v) {
  82             $res[$k] = $v->shortname;
  83         }
  84         return $res;
  85     }
  86
  87     /**
  88      * Adds controls specific to this filter in the form.
  89      * @param object $mform a MoodleForm object to setup
  90      */
  91     public function setupForm(&$mform) {
  92         $profilefields = $this->get_profile_fields();
  93         if (empty($profilefields)) {
  94             return;
  95         }
  96         $objs = array();
  97         $objs['field'] = $mform->createElement('select', $this->_name.'_fld', null, $profilefields);
  98         $objs['op'] = $mform->createElement('select', $this->_name.'_op', null, $this->get_operators());
  99         $objs['value'] = $mform->createElement('text', $this->_name, null);
 100         $objs['field']->setLabel(get_string('profilefilterfield', 'filters'));
 101         $objs['op']->setLabel(get_string('profilefilterlimiter', 'filters'));
 102         $objs['value']->setLabel(get_string('valuefor', 'filters', $this->_label));
 103         $grp =& $mform->addElement('group', $this->_name.'_grp', $this->_label, $objs, '', false);
 104         $mform->setType($this->_name, PARAM_RAW);
 105         if ($this->_advanced) {
 106             $mform->setAdvanced($this->_name.'_grp');
 107         }
 108     }
 109
 110     /**
 111      * Retrieves data from the form data
 112      * @param object $formdata data submited with the form
 113      * @return mixed array filter data or false when filter not set
 114      */
 115     public function check_data($formdata) {
 116         $profilefields = $this->get_profile_fields();
 117
 118         if (empty($profilefields)) {
 119             return false;
 120         }
 121
 122         $field    = $this->_name;
 123         $operator = $field.'_op';
 124         $profile  = $field.'_fld';
 125
 126         if (array_key_exists($profile, $formdata)) {
 127             if ($formdata->$operator < 5 and $formdata->$field === '') {
 128                 return false;
 129             }
 130
 131             return array('value'    => (string)$formdata->$field,
 132                          'operator' => (int)$formdata->$operator,
 133                          'profile'  => (int)$formdata->$profile);
 134         }
 135     }
 136
 137     /**
 138      * Returns the condition to be used with SQL where
 139      * @param array $data filter settings
 140      * @return array sql string and $params
 141      */
 142     public function get_sql_filter($data) {
 143         global $CFG, $DB;
 144         static $counter = 0;
 145         $name = 'ex_profilefield'.$counter++;
 146
 147         $profilefields = $this->get_profile_fields();
 148         if (empty($profilefields)) {
 149             return '';
 150         }
 151
 152         $profile  = $data['profile'];
 153         $operator = $data['operator'];
 154         $value    = $data['value'];
 155
 156         $params = array();
 157         if (!array_key_exists($profile, $profilefields)) {
 158             return array('', array());
 159         }
 160
 161         $where = "";
 162         $op = " IN ";
 163
 164         if ($operator < 5 and $value === '') {
 165             return '';
 166         }
 167
 168         switch($operator) {
 169             case 0: // Contains.
 170                 $where = $DB->sql_like('data', ":$name", false, false);
 171                 $params[$name] = "%$value%";
 172                 break;
 173             case 1: // Does not contain.
 174                 $where = $DB->sql_like('data', ":$name", false, false, true);
 175                 $params[$name] = "%$value%";
 176                 break;
 177             case 2: // Equal to.
 178                 $where = $DB->sql_like('data', ":$name", false, false);
 179                 $params[$name] = "$value";
 180                 break;
 181             case 3: // Starts with.
 182                 $where = $DB->sql_like('data', ":$name", false, false);
 183                 $params[$name] = "$value%";
 184                 break;
 185             case 4: // Ends with.
 186                 $where = $DB->sql_like('data', ":$name", false, false);
 187                 $params[$name] = "%$value";
 188                 break;
 189             case 5: // Empty.
 190                 $where = "data = :$name";
 191                 $params[$name] = "";
 192                 break;
 193             case 6: // Is not defined.
 194                 $op = " NOT IN ";
 195                 break;
 196             case 7: // Is defined.
 197                 break;
 198         }
 199         if ($profile) {
 200             if ($where !== '') {
 201                 $where = " AND $where";
 202             }
 203             $where = "fieldid=$profile $where";
 204         }
 205         if ($where !== '') {
 206             $where = "WHERE $where";
 207         }
 208         return array("id $op (SELECT userid FROM {user_info_data} $where)", $params);
 209     }
 210
 211     /**
 212      * Returns a human friendly description of the filter used as label.
 213      * @param array $data filter settings
 214      * @return string active filter label
 215      */
 216     public function get_label($data) {
 217         $operators      = $this->get_operators();
 218         $profilefields = $this->get_profile_fields();
 219
 220         if (empty($profilefields)) {
 221             return '';
 222         }
 223
 224         $profile  = $data['profile'];
 225         $operator = $data['operator'];
 226         $value    = $data['value'];
 227
 228         if (!array_key_exists($profile, $profilefields)) {
 229             return '';
 230         }
 231
 232         $a = new stdClass();
 233         $a->label    = $this->_label;
 234         $a->value    = $value;
 235         $a->profile  = $profilefields[$profile];
 236         $a->operator = $operators[$operator];
 237
 238         switch($operator) {
 239             case 0: // Contains.
 240             case 1: // Doesn't contain.
 241             case 2: // Equal to.
 242             case 3: // Starts with.
 243             case 4: // Ends with.
 244                 return get_string('profilelabel', 'filters', $a);
 245             case 5: // Empty.
 246             case 6: // Is not defined.
 247             case 7: // Is defined.
 248                 return get_string('profilelabelnovalue', 'filters', $a);
 249         }
 250         return '';
 251     }
 252 }