blog/index.php

   1 <?php // $Id$
   2
   3 /**
   4  * file index.php
   5  * index page to view blogs. if no blog is specified then site wide entries are shown
   6  * if a blog id is specified then the latest entries from that blog are shown
   7  */
   8
   9 if (!file_exists('../config.php')) {
  10     header('Location: ../install.php');
  11     die;
  12 }
  13
  14 require_once('../config.php');
  15 require_once($CFG->dirroot .'/blog/lib.php');
  16 require_once($CFG->libdir .'/blocklib.php');
  17
  18 $id = optional_param('id', 0, PARAM_INT);
  19 $limit = optional_param('limit', 0, PARAM_INT);
  20 $start = optional_param('formstart', 0, PARAM_INT);
  21 $userid = optional_param('userid',0,PARAM_INT);
  22 $courseid = optional_param('courseid',SITEID,PARAM_INT);
  23 $tag = optional_param('tag', '', PARAM_NOTAGS);
  24 $tagid = optional_param('tagid', 0, PARAM_INT);
  25 $postid = optional_param('postid',0,PARAM_INT);
  26 $filtertype = optional_param('filtertype', '', PARAM_ALPHA);
  27 $filterselect = optional_param('filterselect', 0, PARAM_INT);
  28
  29 /// overwrite filter code here
  30
  31 if ($filtertype) {
  32     switch ($filtertype) {
  33
  34         case 'site':
  35             if ($filterselect) {
  36                 $userid = $filterselect;
  37             } else {
  38                 $userid = 0;
  39             }
  40             $course = get_site();
  41             $courseid = SITEID;
  42         break;
  43
  44         case 'course':
  45             if ($filterselect) {
  46                 $courseid = $filterselect;
  47                 $course = get_record('course','id',$courseid);
  48             }
  49             $userid =0;
  50             $groupid = 0;
  51
  52         break;
  53
  54         case 'group':
  55             if ($filterselect) {
  56                 $groupid = $filterselect;
  57                 $group = get_record('groups','id',$groupid);
  58                 $course = get_record('course','id',$group->courseid);
  59                 $courseid = $course->id;
  60             } else {
  61                 $groupid = 0;
  62             }
  63             $userid = 0;
  64
  65         break;
  66
  67         case 'user':
  68             if ($filterselect) {
  69                 $userid = $filterselect;
  70             }
  71             $groupid = 0;
  72
  73         break;
  74         default:
  75         break;
  76     }
  77
  78 } else if ($userid) {    //default to user
  79     $filtertype = 'user';
  80     $filterselect = $userid;
  81 } else {
  82     $filtertype = 'site';
  83     $filterselect = '';
  84 }
  85
  86 /// rights checking
  87
  88 switch ($filtertype) {
  89     case 'site':
  90         if ($CFG->bloglevel < BLOG_SITE_LEVEL && (!isadmin())) {
  91             error ('site blogs is not enabled');
  92         } else if ($CFG->bloglevel < BLOG_GLOBAL_LEVEL) {
  93             require_login();
  94         }
  95     break;
  96     case 'course':
  97         if ($CFG->bloglevel < BLOG_COURSE_LEVEL && (!isadmin())) {
  98             error ('course blogs is not enabled');
  99         }
 100
 101         if (!isstudent($filterselect) && !isteacher($filterselect)) {
 102             error ('you must be a student in this course to view course blogs');
 103         }
 104         /// check if viewer is student
 105     break;
 106     case 'group':
 107         if ($CFG->bloglevel < BLOG_GROUP_LEVEL && (!isadmin())) {
 108             error ('group blogs is not enabled');
 109         }
 110         if (!isteacheredit($course) and (groupmode($course) == SEPARATEGROUPS)) {
 111             if (!ismember($filterselect)) {
 112                 error ('you are not in this group');
 113             }
 114         }
 115         /// check if user is editting teacher, or if spg, is member
 116     break;
 117     case 'user':
 118         if ($CFG->bloglevel < BLOG_USER_LEVEL && (!isadmin())) {
 119             error ('Blogs is not enabled');
 120         }
 121
 122         if ($CFG->bloglevel == BLOG_USER_LEVEL and $USER->id != $filterselect and !isadmin()) {
 123             error ('Under this setting, you can only view your own blogs');
 124         }
 125
 126         /// check to see if the viewer is sharing no_group, visible group course.
 127         /// if not , check if the viewer is in any spg group as the user
 128         blog_user_can_view_user_post($filterselect);
 129
 130     break;
 131     default:
 132     break;
 133 }
 134
 135 // first set the start and end day equal to the day argument passed in from the get vars
 136 if ($limit == 'none') {
 137     $limit = get_user_preferences('blogpagesize',10);
 138 }
 139
 140 include($CFG->dirroot .'/blog/header.php');
 141
 142 $blogpage = optional_param('blogpage',0,PARAM_INT);
 143
 144 blog_print_html_formatted_entries($userid, $postid, $limit, ($blogpage * $limit) ,$filtertype, $filterselect, $tagid, $tag, $filtertype, $filterselect);
 145
 146 add_to_log($courseid, 'blog', 'view', 'index.php?filtertype='.$filtertype.'&amp;filterselect='.$filterselect.'&amp;postid='.$postid.'&amp;tagid='.$tagid.'&amp;tag='.$tag, 'view blog entry');
 147
 148 include($CFG->dirroot .'/blog/footer.php');
 149
 150 ?>