admin/modules.php

   1 <?PHP // $Id$
   2       // Allows the admin to manage activity modules
   3
   4     require_once('../config.php');
   5     require_once('../course/lib.php');
   6     require_once($CFG->libdir.'/adminlib.php');
   7     require_once($CFG->libdir.'/tablelib.php');
   8
   9     // defines
  10     define('MODULE_TABLE','module_administration_table');
  11
  12     admin_externalpage_setup('managemodules');
  13
  14     $show    = optional_param('show', '', PARAM_SAFEDIR);
  15     $hide    = optional_param('hide', '', PARAM_SAFEDIR);
  16     $delete  = optional_param('delete', '', PARAM_SAFEDIR);
  17     $confirm = optional_param('confirm', '', PARAM_BOOL);
  18
  19
  20 /// Print headings
  21
  22     $stractivities = get_string("activities");
  23     $strdelete = get_string("delete");
  24     $strversion = get_string("version");
  25     $strhide = get_string("hide");
  26     $strshow = get_string("show");
  27     $strsettings = get_string("settings");
  28     $stractivities = get_string("activities");
  29     $stractivitymodule = get_string("activitymodule");
  30     $strshowmodulecourse = get_string('showmodulecourse');
  31
  32     admin_externalpage_print_header();
  33
  34     print_heading($stractivities);
  35
  36     $coursesaffected = false;
  37
  38
  39 /// If data submitted, then process and store.
  40
  41     if (!empty($hide) and confirm_sesskey()) {
  42         if (!$module = get_record("modules", "name", $hide)) {
  43             error("Module doesn't exist!");
  44         }
  45         set_field("modules", "visible", "0", "id", $module->id);                               // Hide main module
  46         set_field('course_modules', 'visibleold', '1', 'visible' ,'1', 'module', $module->id); // Remember the previous visible state so we can toggle this back if the module is unhidden.
  47         set_field('course_modules', 'visibleold', '0', 'visible' ,'0', 'module', $module->id);
  48         set_field("course_modules", "visible", "0", "module", $module->id);                    // Hide all related activity modules
  49         $coursesaffected = true;
  50     }
  51
  52     if (!empty($show) and confirm_sesskey()) {
  53         if (!$module = get_record("modules", "name", $show)) {
  54             error("Module doesn't exist!");
  55         }
  56         set_field("modules", "visible", "1", "id", $module->id);                               // Show main module
  57         set_field('course_modules', 'visible', '1', 'visibleold', '1', 'module', $module->id); // Get the previous saved visible state for the course module.
  58         $coursesaffected = true;
  59     }
  60
  61     if (!empty($delete) and confirm_sesskey()) {
  62
  63         $strmodulename = get_string("modulename", "$delete");
  64
  65         if (!$confirm) {
  66             notice_yesno(get_string("moduledeleteconfirm", "", $strmodulename),
  67                          "modules.php?delete=$delete&amp;confirm=1&amp;sesskey=$USER->sesskey",
  68                          "modules.php");
  69             admin_externalpage_print_footer();
  70             exit;
  71
  72         } else {  // Delete everything!!
  73
  74             if ($delete == "forum") {
  75                 error("You can not delete the forum module!!");
  76             }
  77
  78             if (!$module = get_record("modules", "name", $delete)) {
  79                 error("Module doesn't exist!");
  80             }
  81
  82             // OK, first delete all the relevant instances from all course sections
  83             if ($coursemods = get_records("course_modules", "module", $module->id)) {
  84                 foreach ($coursemods as $coursemod) {
  85                     if (! delete_mod_from_section($coursemod->id, $coursemod->section)) {
  86                         notify("Could not delete the $strmodulename with id = $coursemod->id from section $coursemod->section");
  87                     }
  88                 }
  89             }
  90
  91             // Now delete all the course module records
  92             if (!delete_records("course_modules", "module", $module->id)) {
  93                 notify("Error occurred while deleting all $strmodulename records in course_modules table");
  94             }
  95
  96             // Then delete all the logs
  97             if (!delete_records("log", "module", $module->name)) {
  98                 notify("Error occurred while deleting all $strmodulename records in log table");
  99             }
 100
 101             // And log_display information
 102             if (!delete_records("log_display", "module", $module->name)) {
 103                 notify("Error occurred while deleting all $strmodulename records in log_display table");
 104             }
 105
 106             // And the module entry itself
 107             if (!delete_records("modules", "name", $module->name)) {
 108                 notify("Error occurred while deleting the $strmodulename record from modules table");
 109             }
 110
 111             // Then the tables themselves
 112
 113             if ($tables = $db->Metatables()) {
 114                 $prefix = $CFG->prefix.$module->name;
 115                 foreach ($tables as $table) {
 116                     if (strpos($table, $prefix) === 0) {
 117                         if (!execute_sql("DROP TABLE $table", false)) {
 118                             notify("ERROR: while trying to drop table $table");
 119                         }
 120                     }
 121                 }
 122             }
 123             // Delete the capabilities that were defined by this module
 124             capabilities_cleanup('mod/'.$module->name);
 125
 126             // remove entent handlers and dequeue pending events
 127             events_uninstall('mod/'.$module->name);
 128
 129             // rebuild_course_cache();  // Because things have changed
 130             $coursesaffected = true;
 131
 132             $a->module = $strmodulename;
 133             $a->directory = "$CFG->dirroot/mod/$delete";
 134             notice(get_string("moduledeletefiles", "", $a), "modules.php");
 135         }
 136     }
 137
 138     if ($coursesaffected) {
 139         rebuild_course_cache();  // Because things have changed
 140     }
 141
 142
 143 /// Get and sort the existing modules
 144
 145     if (!$modules = get_records("modules")) {
 146         error("No modules found!!");        // Should never happen
 147     }
 148
 149     foreach ($modules as $module) {
 150         $strmodulename = get_string("modulename", "$module->name");
 151         // Deal with modules which are lacking the language string
 152         if ($strmodulename == '[[modulename]]') {
 153             $strmodulename = $module->name;
 154         }
 155         $modulebyname[$strmodulename] = $module;
 156     }
 157     ksort($modulebyname);
 158
 159 /// Print the table of all modules
 160     // construct the flexible table ready to display
 161     $table = new flexible_table(MODULE_TABLE);
 162     $table->define_columns(array('name', 'instances', 'version', 'hideshow', 'delete', 'settings'));
 163     $table->define_headers(array($stractivitymodule, $stractivities, $strversion, "$strhide/$strshow", $strdelete, $strsettings));
 164     $table->define_baseurl($CFG->wwwroot.'/'.$CFG->admin.'/modules.php');
 165     $table->set_attribute('id', 'modules');
 166     $table->set_attribute('class', 'generaltable generalbox boxaligncenter boxwidthwide');
 167     $table->setup();
 168
 169     foreach ($modulebyname as $modulename => $module) {
 170
 171         // took out hspace="\10\", because it does not validate. don't know what to replace with.
 172         $icon = "<img src=\"$CFG->modpixpath/$module->name/icon.gif\" class=\"icon\" alt=\"\" />";
 173
 174         $delete = "<a href=\"modules.php?delete=$module->name&amp;sesskey=$USER->sesskey\">$strdelete</a>";
 175
 176         if (file_exists("$CFG->dirroot/mod/$module->name/config.html")) {
 177             $settings = "<a href=\"module.php?module=$module->name\">$strsettings</a>";
 178         } else {
 179             $settings = "";
 180         }
 181
 182         $count = count_records_select("$module->name",'course<>0');
 183         if ($count>0) {
 184             $countlink = "<a href=\"{$CFG->wwwroot}/course/search.php?modulelist=$module->name" .
 185                 "&amp;sesskey={$USER->sesskey}\" title=\"$strshowmodulecourse\">$count</a>";
 186         }
 187         else {
 188             $countlink = "$count";
 189         }
 190
 191         if ($module->visible) {
 192             $visible = "<a href=\"modules.php?hide=$module->name&amp;sesskey=$USER->sesskey\" title=\"$strhide\">".
 193                        "<img src=\"$CFG->pixpath/i/hide.gif\" class=\"icon\" alt=\"$strhide\" /></a>";
 194             $class = "";
 195         } else {
 196             $visible = "<a href=\"modules.php?show=$module->name&amp;sesskey=$USER->sesskey\" title=\"$strshow\">".
 197                        "<img src=\"$CFG->pixpath/i/show.gif\" class=\"icon\" alt=\"$strshow\" /></a>";
 198             $class = " class=\"dimmed_text\"";
 199         }
 200         if ($module->name == "forum") {
 201             $delete = "";
 202             $visible = "";
 203             $class = "";
 204         }
 205
 206         $table->add_data(array(
 207             '<span'.$class.'>'.$icon.' '.$modulename.'</span>',
 208             $countlink,
 209             '<span'.$class.'>'.$module->version.'</span>',
 210             $visible,
 211             $delete,
 212             $settings
 213         ));
 214     }
 215
 216     $table->print_html();
 217
 218     admin_externalpage_print_footer();
 219
 220 ?>