admin/modules.php

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