admin/modules.php

   1 <?PHP // $Id$
   2       // Allows the admin to create, delete and rename course categories
   3
   4     require_once("../config.php");
   5     require_once("../course/lib.php");
   6
   7     optional_variable($disable);
   8     optional_variable($enable);
   9     optional_variable($delete);
  10     optional_variable($confirm);
  11
  12     require_login();
  13
  14     if (!isadmin()) {
  15         error("Only administrators can use this page!");
  16     }
  17
  18     if (!$site = get_site()) {
  19         error("Site isn't defined!");
  20     }
  21
  22
  23 /// Print headings
  24
  25     $stradministration = get_string("administration");
  26     $strconfiguration = get_string("configuration");
  27     $strmanagemodules = get_string("managemodules");
  28     $strdelete = get_string("delete");
  29     $strversion = get_string("version");
  30     $strhide = get_string("hide");
  31     $strshow = get_string("show");
  32     $strsettings = get_string("settings");
  33     $stractivities = get_string("activities");
  34     $stractivitymodule = get_string("activitymodule");
  35
  36     print_header("$site->shortname: $strmanagemodules", "$site->fullname",
  37                  "<a href=\"index.php\">$stradministration</a> -> ".
  38                  "<a href=\"configure.php\">$strconfiguration</a> -> $strmanagemodules");
  39
  40     print_heading($strmanagemodules);
  41
  42
  43 /// If data submitted, then process and store.
  44
  45     if (!empty($hide) and confirm_sesskey()) {
  46         if (!$module = get_record("modules", "name", $hide)) {
  47             error("Module doesn't exist!");
  48         }
  49         set_field("modules", "visible", "0", "id", $module->id);            // Hide main module
  50         set_field("course_modules", "visible", "0", "module", $module->id); // Hide all related activity modules
  51     }
  52
  53     if (!empty($show) and confirm_sesskey()) {
  54         if (!$module = get_record("modules", "name", $show)) {
  55             error("Module doesn't exist!");
  56         }
  57         set_field("modules", "visible", "1", "id", $module->id);            // Show main module
  58         set_field("course_modules", "visible", "1", "module", $module->id); // Show all related activity modules
  59     }
  60
  61     if (!empty($delete) and confirm_sesskey()) {
  62
  63         $strmodulename = get_string("modulename", "$delete");
  64
  65         if (empty($confirm)) {
  66             notice_yesno(get_string("moduledeleteconfirm", "", $strmodulename),
  67                          "modules.php?delete=$delete&confirm=$delete&sesskey=$USER->sesskey",
  68                          "modules.php");
  69             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
 124             rebuild_course_cache();  // Because things have changed
 125
 126
 127             $a->module = $strmodulename;
 128             $a->directory = "$CFG->dirroot/mod/$delete";
 129             notice(get_string("moduledeletefiles", "", $a), "modules.php");
 130         }
 131     }
 132
 133 /// Get and sort the existing modules
 134
 135     if (!$modules = get_records("modules")) {
 136         error("No modules found!!");        // Should never happen
 137     }
 138
 139     foreach ($modules as $module) {
 140         $strmodulename = get_string("modulename", "$module->name");
 141         $modulebyname[$strmodulename] = $module;
 142     }
 143     ksort($modulebyname);
 144
 145 /// Print the table of all modules
 146
 147     if (empty($THEME->custompix)) {
 148         $pixpath = "../pix";
 149         $modpixpath = "../mod";
 150     } else {
 151         $pixpath = "../theme/$CFG->theme/pix";
 152         $modpixpath = "../theme/$CFG->theme/pix/mod";
 153     }
 154
 155     $table->head  = array ($stractivitymodule, $stractivities, $strversion, "$strhide/$strshow", $strdelete, $strsettings);
 156     $table->align = array ("LEFT", "RIGHT", "LEFT", "CENTER", "CENTER", "CENTER");
 157     $table->wrap = array ("NOWRAP", "", "", "", "","");
 158     $table->size = array ("100%", "10", "10", "10", "10","12");
 159     $table->width = "100";
 160
 161     foreach ($modulebyname as $modulename => $module) {
 162
 163         $icon = "<img src=\"$modpixpath/$module->name/icon.gif\" hspace=10 height=16 width=16 border=0>";
 164
 165         $delete = "<a href=\"modules.php?delete=$module->name&sesskey=$USER->sesskey\">$strdelete</a>";
 166
 167         if (file_exists("$CFG->dirroot/mod/$module->name/config.html")) {
 168             $settings = "<a href=\"module.php?module=$module->name&sesskey=$USER->sesskey\">$strsettings</a>";
 169         } else {
 170             $settings = "";
 171         }
 172
 173         $count = count_records("$module->name");
 174
 175         if ($module->visible) {
 176             $visible = "<a href=\"modules.php?hide=$module->name&sesskey=$USER->sesskey\" title=\"$strhide\">".
 177                        "<img src=\"$pixpath/i/hide.gif\" align=\"absmiddle\" height=16 width=16 border=0></a>";
 178             $class = "";
 179         } else {
 180             $visible = "<a href=\"modules.php?show=$module->name&sesskey=$USER->sesskey\" title=\"$strshow\">".
 181                        "<img src=\"$pixpath/i/show.gif\" align=\"absmiddle\" height=16 width=16 border=0></a>";
 182             $class = "class=\"dimmed_text\"";
 183         }
 184         if ($module->name == "forum") {
 185             $delete = "";
 186             $visible = "";
 187             $class = "";
 188         }
 189         $table->data[] = array ("<p $class>$icon $modulename</p>", $count, $module->version, $visible, $delete, $settings);
 190     }
 191     print_table($table);
 192
 193     echo "<br /><br />";
 194
 195     print_footer();
 196
 197 ?>