X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=WEB-INF%2Flib%2FttUser.class.php;h=a40a5fda1eedc4a8ef41e9ba17ae16333460dde4;hb=040c6516659e15f360159859b783e3722e86f370;hp=60f4f984b40c5f61a374e2ca35f4a7ab13dd8c2c;hpb=91f127aa192430faa62c59530f42ee5d82b9f7e3;p=timetracker.git

diff --git a/WEB-INF/lib/ttUser.class.php b/WEB-INF/lib/ttUser.class.php
index 60f4f984..a40a5fda 100644
--- a/WEB-INF/lib/ttUser.class.php
+++ b/WEB-INF/lib/ttUser.class.php
@@ -28,7 +28,10 @@
 
 import('ttConfigHelper');
 import('ttGroupHelper');
+import('ttBehalfUser');
 import('ttGroup');
+import('form.Form');
+import('form.ActionForm');
 
 class ttUser {
   var $login = null;            // User login.
@@ -40,6 +43,7 @@ class ttUser {
   var $role_name = null;        // Role name.
   var $rank = null;             // User role rank.
   var $client_id = null;        // Client id for client user role.
+  var $quota_percent = 100.0;   // Time quota percent for quotas plugin.
   var $behalf_id = null;        // User id, on behalf of whom we are working.
   var $behalf_group_id = null;  // Group id, on behalf of which we are working.
   var $behalf_name = null;      // User name, on behalf of whom we are working.
@@ -59,22 +63,24 @@ class ttUser {
   var $punch_mode = 0;          // Whether punch mode is enabled for user.
   var $allow_overlap = 0;       // Whether to allow overlapping time entries.
   var $future_entries = 0;      // Whether to allow creating future entries.
-  var $uncompleted_indicators = 0; // Uncompleted time entry indicators (show nowhere or on users page).
   var $bcc_email = null;        // Bcc email.
   var $allow_ip = null;         // Specification from where user is allowed access.
   var $password_complexity = null; // Password complexity example.
   var $currency = null;         // Currency.
   var $plugins = null;          // Comma-separated list of enabled plugins.
+
+  // Refactoring ongoing. Towards using helper instead of config string?
   var $config = null;           // Comma-separated list of miscellaneous config options.
+  var $configHelper = null;     // An instance of ttConfigHelper class.
+
   var $custom_logo = 0;         // Whether to use a custom logo for group.
   var $lock_spec = null;        // Cron specification for record locking.
+  var $holidays = null;         // Holidays specification.
   var $workday_minutes = 480;   // Number of work minutes in a regular day.
   var $rights = array();        // An array of user rights such as 'track_own_time', etc.
   var $is_client = false;       // Whether user is a client as determined by missing 'track_own_time' right.
-  var $minutes_in_unit = 15;    // Number of minutes in unit for Work units plugin.
-  var $first_unit_threshold = 0;// Threshold for 1st unit for Work units plugin.
-  var $unit_totals_only = 0;    // Totals only option for the Work units plugin.
 
+  var $behalfUser = null;       // A ttBehalfUser instance with on behalf user attributes.
   var $behalfGroup = null;      // A ttGroup instance with on behalf group attributes.
 
   // Constructor.
@@ -86,11 +92,11 @@ class ttUser {
 
     $mdb2 = getConnection();
 
-    $sql = "SELECT u.id, u.login, u.name, u.group_id, u.role_id, r.rank, r.name as role_name, r.rights, u.client_id, u.email,
-      g.org_id, g.name as group_name, g.currency, g.lang, g.decimal_mark, g.date_format, g.time_format, g.week_start,
-      g.tracking_mode, g.project_required, g.task_required, g.record_type,
-      g.bcc_email, g.allow_ip, g.password_complexity, g.plugins, g.config, g.lock_spec, g.workday_minutes, g.custom_logo
-      FROM tt_users u LEFT JOIN tt_groups g ON (u.group_id = g.id) LEFT JOIN tt_roles r on (r.id = u.role_id) WHERE ";
+    $sql = "SELECT u.id, u.login, u.name, u.group_id, u.role_id, r.rank, r.name as role_name, r.rights, u.client_id,".
+      " u.quota_percent, u.email, g.org_id, g.name as group_name, g.currency, g.lang, g.decimal_mark, g.date_format,".
+      " g.time_format, g.week_start, g.tracking_mode, g.project_required, g.task_required, g.record_type,".
+      " g.bcc_email, g.allow_ip, g.password_complexity, g.plugins, g.config, g.lock_spec, g.holidays, g.workday_minutes, g.custom_logo".
+      " FROM tt_users u LEFT JOIN tt_groups g ON (u.group_id = g.id) LEFT JOIN tt_roles r on (r.id = u.role_id) WHERE ";
     if ($id)
       $sql .= "u.id = $id";
     else
@@ -112,9 +118,10 @@ class ttUser {
       $this->role_id = $val['role_id'];
       $this->role_name = $val['role_name'];
       $this->rights = explode(',', $val['rights']);
-      $this->is_client = !in_array('track_own_time', $this->rights);
       $this->rank = $val['rank'];
       $this->client_id = $val['client_id'];
+      $this->is_client = $this->client_id && !in_array('track_own_time', $this->rights);
+      if ($val['quota_percent']) $this->quota_percent = $val['quota_percent'];
       $this->email = $val['email'];
       $this->lang = $val['lang'];
       $this->decimal_mark = $val['decimal_mark'];
@@ -132,29 +139,26 @@ class ttUser {
       $this->currency = $val['currency'];
       $this->plugins = $val['plugins'];
       $this->lock_spec = $val['lock_spec'];
+      $this->holidays = $val['holidays'];
       $this->workday_minutes = $val['workday_minutes'];
       $this->custom_logo = $val['custom_logo'];
 
+      // TODO: refactor this.
       $this->config = $val['config'];
-      $config = new ttConfigHelper($this->config);
+      $this->configHelper = new ttConfigHelper($val['config']);
+
       // Set user config options.
-      $this->show_holidays = $config->getDefinedValue('show_holidays');
-      $this->punch_mode = $config->getDefinedValue('punch_mode');
-      $this->allow_overlap = $config->getDefinedValue('allow_overlap');
-      $this->future_entries = $config->getDefinedValue('future_entries');
-      $this->uncompleted_indicators = $config->getDefinedValue('uncompleted_indicators');
-      if ($this->isPluginEnabled('wu')) {
-        $minutes_in_unit = $config->getIntValue('minutes_in_unit');
-        if ($minutes_in_unit) $this->minutes_in_unit = $minutes_in_unit;
-        $first_unit_threshold = $config->getIntValue('1st_unit_threshold');
-        if ($first_unit_threshold) $this->first_unit_threshold = $first_unit_threshold;
-        $this->unit_totals_only = $config->getDefinedValue('unit_totals_only');
-      }
+      $this->show_holidays = $this->configHelper->getDefinedValue('show_holidays');
+      $this->punch_mode = $this->configHelper->getDefinedValue('punch_mode');
+      $this->allow_overlap = $this->configHelper->getDefinedValue('allow_overlap');
+      $this->future_entries = $this->configHelper->getDefinedValue('future_entries');
       
       // Set "on behalf" id and name (user).
       if (isset($_SESSION['behalf_id'])) {
         $this->behalf_id = $_SESSION['behalf_id'];
         $this->behalf_name = $_SESSION['behalf_name'];
+
+        $this->behalfUser = new ttBehalfUser($this->behalf_id, $this->org_id);
       }
       // Set "on behalf" id and name (group).
       if (isset($_SESSION['behalf_group_id'])) {
@@ -166,9 +170,19 @@ class ttUser {
     }
   }
 
-  // The getUser returns user id on behalf of whom the current user is operating.
+  // getUser returns user id on behalf of whom the current user is operating.
   function getUser() {
-    return ($this->behalf_id ? $this->behalf_id : $this->id);
+    return ($this->behalfUser ? $this->behalfUser->id : $this->id);
+  }
+
+  // getName returns user name on behalf of whom the current user is operating.
+  function getName() {
+    return ($this->behalfUser ? $this->behalfUser->name : $this->name);
+  }
+
+  // getQuotaPercent returns quota percent for active user.
+  function getQuotaPercent() {
+    return ($this->behalfUser ? $this->behalfUser->quota_percent : $this->quota_percent);
   }
 
   // The getGroup returns group id on behalf of which the current user is operating.
@@ -181,6 +195,21 @@ class ttUser {
     return ($this->behalfGroup ? $this->behalfGroup->decimal_mark : $this->decimal_mark);
   }
 
+  // getDateFormat returns date format for active group.
+  function getDateFormat() {
+    return ($this->behalfGroup ? $this->behalfGroup->date_format : $this->date_format);
+  }
+
+  // getTimeFormat returns time format for active group.
+  function getTimeFormat() {
+    return ($this->behalfGroup ? $this->behalfGroup->time_format : $this->time_format);
+  }
+
+  // getWeekStart returns week start day for active group.
+  function getWeekStart() {
+    return ($this->behalfGroup ? $this->behalfGroup->week_start : $this->week_start);
+  }
+
   // getTrackingMode returns tracking mode for active group.
   function getTrackingMode() {
     return ($this->behalfGroup ? $this->behalfGroup->tracking_mode : $this->tracking_mode);
@@ -191,14 +220,34 @@ class ttUser {
     return ($this->behalfGroup ? $this->behalfGroup->record_type : $this->record_type);
   }
 
+  // getCurrency returns currency string for active group.
+  function getCurrency() {
+    return ($this->behalfGroup ? $this->behalfGroup->currency : $this->currency);
+  }
+
   // getPlugins returns plugins string for active group.
   function getPlugins() {
     return ($this->behalfGroup ? $this->behalfGroup->plugins : $this->plugins);
   }
 
+  // getLockSpec returns lock specification for active group.
+  function getLockSpec() {
+    return ($this->behalfGroup ? $this->behalfGroup->lock_spec : $this->lock_spec);
+  }
+
+  // getHolidays returns holidays specification for active group.
+  function getHolidays() {
+    return ($this->behalfGroup ? $this->behalfGroup->holidays : $this->holidays);
+  }
+
+  // getWorkdayMinutes returns workday_minutes for active group.
+  function getWorkdayMinutes() {
+    return ($this->behalfGroup ? $this->behalfGroup->workday_minutes : $this->workday_minutes);
+  }
+
   // getConfig returns config string for active group.
   function getConfig() {
-    return ($this->behalfGroup ? $this->behalfGroup->config : $this->config);
+    return ($this->behalfGroup ? $this->behalfGroup->configHelper->getConfig() : $this->configHelper->getConfig());
   }
 
   // getConfigOption returns true if an option is defined for group.
@@ -210,6 +259,12 @@ class ttUser {
     return $config->getDefinedValue($name);
   }
 
+  // getConfigInt retruns an integer value defined in a group, or false.
+  function getConfigInt($name, $defaultVal) {
+    $config = new ttConfigHelper($this->getConfig());
+    return $config->getIntValue($name, $defaultVal);
+  }
+
   // can - determines whether user has a right to do something.
   function can($do_something) {
     return in_array($do_something, $this->rights);
@@ -226,17 +281,40 @@ class ttUser {
     return in_array($plugin, explode(',', $this->getPlugins()));
   }
 
+  // isOptionEnabled checks whether a config option is enabled for user.
+  function isOptionEnabled($option)
+  {
+    return $this->behalfGroup ? $this->behalfGroup->configHelper->getDefinedValue($option) : $this->configHelper->getDefinedValue($option);
+  }
+
+  // setOption sets an option inside of ttConfigHelper instance.
+  // Note that it does not write to the database.
+  function setOption($option, $enable = true)
+  {
+    return $this->behalfGroup ? $this->behalfGroup->configHelper->setDefinedValue($option, $enable) : $this->configHelper->setDefinedValue($option, $enable);
+  }
+
   // getAssignedProjects - returns an array of assigned projects.
-  function getAssignedProjects()
+  function getAssignedProjects($includeFiles = false)
   {
     $result = array();
     $mdb2 = getConnection();
 
-    $group_id = $this->behalf_group_id ? $this->behalf_group_id : $this->group_id;
+    $user_id = $this->getUser();
+    $group_id = $this->getGroup();
+    $org_id = $this->org_id;
+
+    if ($includeFiles) {
+      $filePart = ', if(Sub1.entity_id is null, 0, 1) as has_files';
+      $fileJoin =  " left join (select distinct entity_id from tt_files".
+      " where entity_type = 'project' and group_id = $group_id and org_id = $org_id and status = 1) Sub1".
+      " on (p.id = Sub1.entity_id)";
+    }
+
     // Do a query with inner join to get assigned projects.
-    $sql = "select p.id, p.name, p.description, p.tasks, upb.rate from tt_projects p
-      inner join tt_user_project_binds upb on (upb.user_id = ".$this->getUser()." and upb.project_id = p.id and upb.status = 1)
-      where p.group_id = $group_id and p.status = 1 order by p.name";
+    $sql = "select p.id, p.name, p.description, p.tasks, upb.rate $filePart from tt_projects p $fileJoin".
+      " inner join tt_user_project_binds upb on (upb.user_id = $user_id and upb.project_id = p.id and upb.status = 1)".
+      " where p.group_id = $group_id and p.org_id = $org_id and p.status = 1 order by p.name";
     $res = $mdb2->query($sql);
     if (!is_a($res, 'PEAR_Error')) {
       while ($val = $res->fetchRow()) {
@@ -266,8 +344,11 @@ class ttUser {
     $mdb2 = getConnection();
     $tasks = implode(',', $task_ids); // This is a comma-separated list of task ids.
 
+    $group_id = $this->getGroup();
+    $org_id = $this->org_id;
+
     $sql = "select id, name, description from tt_tasks".
-      " where group_id = $this->group_id and status = 1 and id in ($tasks) order by name";
+      " where group_id = $group_id and org_id = $org_id and status = 1 and id in ($tasks) order by name";
     $res = $mdb2->query($sql);
     if (!is_a($res, 'PEAR_Error')) {
       while ($val = $res->fetchRow()) {
@@ -290,9 +371,12 @@ class ttUser {
 
     $mdb2 = getConnection();
 
+    $group_id = $this->getGroup();
+    $org_id = $this->org_id;
+
     // Get active clients for group.
     $clients = array();
-    $sql = "select id, name, address, projects from tt_clients where group_id = $this->group_id and status = 1";
+    $sql = "select id, name, address, projects from tt_clients where group_id = $group_id and org_id = $org_id and status = 1";
     $res = $mdb2->query($sql);
     if (!is_a($res, 'PEAR_Error')) {
       while ($val = $res->fetchRow()) {
@@ -310,7 +394,7 @@ class ttUser {
     if (!$this->isPluginEnabled('lk'))
       return false; // Locking feature is disabled.
 
-    if (!$this->lock_spec)
+    if (!$this->getLockSpec())
       return false; // There is no lock specification.
 
     if (!$this->behalf_id && $this->can('override_own_date_lock'))
@@ -323,7 +407,7 @@ class ttUser {
     require_once(LIBRARY_DIR.'/tdcron/class.tdcron.entry.php');
 
     // Calculate the last occurrence of a lock.
-    $last = tdCron::getLastOccurrence($this->lock_spec, time());
+    $last = tdCron::getLastOccurrence($this->getLockSpec(), time());
     $lockdate = new DateAndTime(DB_DATEFORMAT, strftime('%Y-%m-%d', $last));
     if ($date->before($lockdate))
       return true;
@@ -354,7 +438,16 @@ class ttUser {
     $includeSelf = isset($options['include_self']);
 
     $select_part = 'select u.id, u.group_id, u.name';
-    if (isset($options['include_login'])) $select_part .= ', u.login';
+    if (isset($options['include_login'])) {
+      $select_part .= ', u.login';
+      // Piggy-back on include_login to see if we must also include quota_percent.
+      $include_quota = $this->isPluginEnabled('mq');
+      if ($include_quota) {
+        $decimal_mark = $this->getDecimalMark();
+        $replaceDecimalMark = ('.' != $decimal_mark);
+        $select_part .= ', u.quota_percent';
+      }
+    }
     if (!isset($options['include_clients'])) $select_part .= ', r.rights';
     if (isset($options['include_role'])) $select_part .= ', r.name as role_name, r.rank';
 
@@ -362,7 +455,7 @@ class ttUser {
 
     $left_joins = null;
     if (isset($options['max_rank']) || $skipClients || isset($options['include_role']))
-        $left_joins .= ' left join tt_roles r on (u.role_id = r.id)';
+      $left_joins .= ' left join tt_roles r on (u.role_id = r.id)';
 
     $where_part = " where u.org_id = $org_id and u.group_id = $group_id";
     if (isset($options['status']))
@@ -389,6 +482,14 @@ class ttUser {
         if ($isClient)
           continue; // Skip adding clients.
       }
+      if ($include_quota) {
+        $quota = $val['quota_percent'];
+        if (ttEndsWith($quota, '.00'))
+          $quota = substr($quota, 0, strlen($quota)-3); // Trim trailing ".00";
+        elseif ($replaceDecimalMark)
+          $quota = str_replace('.', $decimal_mark, $quota);
+        $val['quota_percent'] = $quota.'%';
+      }
       $user_list[] = $val;
     }
 
@@ -412,21 +513,6 @@ class ttUser {
   //   - The entire stack of groups all the way down to current on behalf group.
   //   - All immediate children of the current on behalf group.
   // This allows user to navigate easily to home group, anything in between, and 1 level below.
-  //
-  // Note 1: group dropdown is, by design, to be placed on all pages where "relevant",
-  // such as users.php, projects.php, tasks.php, etc. But some features may be disabled
-  // in some groups. We should check for feature availability on group change
-  // in post and redirect to feature_disabled.php when this happens.
-  // This will allow us to keep dropdown content consistent on all pages.
-  // Filtering content of the dropdown does not seem right.
-  //
-  // Note 2: Menu should display according to $user home group settings.
-  //         Pages, should look according to $user->behalfGroup settings (if set).
-  //         For example, if home group allows tasks, menu should display Tasks,
-  //         even when we are on behalf of a subgroup without tasks.
-  //
-  // Note 3: Language of all pages should be as in $user home group even when
-  //         subgroups have a different language.
   function getGroupsForDropdown() {
     $mdb2 = getConnection();
 
@@ -501,7 +587,7 @@ class ttUser {
     // then rank restriction does not apply.
     $max_rank = $this->behalfGroup ? MAX_RANK : $this->rank;
 
-    $sql =  "select u.id, u.name, u.login, u.role_id, u.client_id, u.status, u.rate, u.email from tt_users u".
+    $sql =  "select u.id, u.name, u.login, u.role_id, u.client_id, u.status, u.rate, u.quota_percent, u.email from tt_users u".
       " left join tt_roles r on (u.role_id = r.id)".
       " where u.id = $user_id and u.group_id = $group_id and u.org_id = $org_id and u.status is not null".
       " and (r.rank < $max_rank or (r.rank = $max_rank and u.id = $this->id))"; // Users with lesser roles or self.
@@ -519,7 +605,7 @@ class ttUser {
   // - subgroup must ve valid;
   // - user should be a member of it.
   function checkBehalfId() {
-    if (!$this->behalf_group_id) {
+    if (!$this->behalfGroup) {
       // Checking user from home group.
       $options = array('status'=>ACTIVE,'max_rank'=>$this->rank-1);
       $users = $this->getUsers($options);
@@ -529,12 +615,12 @@ class ttUser {
       }
     } else {
       // Checking user from a subgroup.
-      $group_id = $this->behalf_group_id;
+      $group_id = $this->behalfGroup->id;
       if (!$this->isSubgroupValid($group_id))
         return false;
 
       // So far, so good. Check user now.
-      $options = array('group_id'=>$group_id,'status'=>ACTIVE,'max_rank'=>MAX_RANK);
+      $options = array('status'=>ACTIVE,'max_rank'=>MAX_RANK);
       $users = $this->getUsers($options);
       foreach($users as $one_user) {
         if ($one_user['id'] == $this->behalf_id)
@@ -552,11 +638,10 @@ class ttUser {
   // In this case we still allow access to charts, but set behalf_id to someone else.
   // Another example: working in a subgroup on behalf of someone else.
   function adjustBehalfId() {
-    $group_id = $this->behalf_group_id ? $this->behalf_group_id : $this->group_id;
-    $rank = $this->getMaxRankForGroup($group_id);
+    $rank = $this->getMaxRankForGroup($this->getGroup());
 
     // Adjust to first found user in group.
-    $options = array('group_id'=>$group_id,'status'=>ACTIVE,'max_rank'=>$rank);
+    $options = array('status'=>ACTIVE,'max_rank'=>$rank);
     $users = $this->getUsers($options);
     foreach($users as $one_user) {
       // Fake loop to access first element.
@@ -571,15 +656,10 @@ class ttUser {
 
   // updateGroup updates group information with new data.
   function updateGroup($fields) {
-    if (!($this->can('manage_basic_settings') ||
-      $this->can('manage_advanced_settings') ||
-      $this->can('manage_features'))) return false;
-    // TODO: update the above for subgroup updates.
+    $mdb2 = getConnection();
 
     $group_id = $fields['group_id'];
     if ($group_id && !$this->isGroupValid($group_id)) return false;
-
-    $mdb2 = getConnection();
     if (!$group_id) $group_id = $this->getGroup();
 
     if (isset($fields['name'])) $name_part = ', name = '.$mdb2->quote($fields['name']);
@@ -601,12 +681,13 @@ class ttUser {
     if (isset($fields['plugins'])) $plugins_part = ', plugins = '.$mdb2->quote($fields['plugins']);
     if (isset($fields['config'])) $config_part = ', config = '.$mdb2->quote($fields['config']);
     if (isset($fields['lock_spec'])) $lock_spec_part = ', lock_spec = '.$mdb2->quote($fields['lock_spec']);
+    if (isset($fields['holidays'])) $holidays_part = ', holidays = '.$mdb2->quote($fields['holidays']);
     if (isset($fields['workday_minutes'])) $workday_minutes_part = ', workday_minutes = '.$mdb2->quote($fields['workday_minutes']);
     $modified_part = ', modified = now(), modified_ip = '.$mdb2->quote($_SERVER['REMOTE_ADDR']).', modified_by = '.$mdb2->quote($this->id);
 
     $parts = trim($name_part.$description_part.$currency_part.$lang_part.$decimal_mark_part.$date_format_part.
       $time_format_part.$week_start_part.$tracking_mode_part.$task_required_part.$project_required_part.$record_type_part.
-      $bcc_email_part.$allow_ip_part.$plugins_part.$config_part.$lock_spec_part.$workday_minutes_part.$modified_part, ',');
+      $bcc_email_part.$allow_ip_part.$plugins_part.$config_part.$lock_spec_part.$holidays_part.$workday_minutes_part.$modified_part, ',');
 
     $sql = "update tt_groups set $parts where id = $group_id and org_id = $this->org_id";
     $affected = $mdb2->exec($sql);
@@ -643,7 +724,8 @@ class ttUser {
       return false;
 
     // Mark user as deleted.
-    $sql = "update tt_users set status = NULL where id = $user_id".
+    $modified_part = ', modified = now(), modified_ip = '.$mdb2->quote($_SERVER['REMOTE_ADDR']).', modified_by = '.$mdb2->quote($this->id);
+    $sql = "update tt_users set status = null $modified_part where id = $user_id".
       " and group_id = $group_id and org_id = $org_id";
     $affected = $mdb2->exec($sql);
     if (is_a($affected, 'PEAR_Error'))
@@ -742,7 +824,7 @@ class ttUser {
       $user_part .= ' <span class="onBehalf">'.$i18n->get('label.on_behalf').' '.htmlspecialchars($this->behalf_name).'</span>';
     }
     if ($this->behalf_group_id) {
-      $user_part .= ',  <span class="onBehalf">'.$i18n->get('label.on_behalf').' '.htmlspecialchars($this->behalf_group_name).'</span>';
+      $user_part .= ',  <span class="onBehalf">'.htmlspecialchars($this->behalf_group_name).'</span>';
     } else {
       if ($this->group_name) // Note: we did not require group names in the past.
         $user_part .= ', '.$this->group_name;
@@ -764,6 +846,13 @@ class ttUser {
     unset($_SESSION['behalf_id']);
     unset($_SESSION['behalf_name']);
 
+    // Destroy report bean if it was set in session.
+    $form = new Form('dummyForm');
+    $bean = new ActionForm('reportBean', $form, $request);
+    if ($bean->isSaved()) {
+      $bean->destroyBean();
+    }
+
     // Do not do anything if we don't have rights.
     if (!$this->can('manage_subgroups')) return;
 
@@ -782,17 +871,18 @@ class ttUser {
 
     $this->behalfGroup = new ttGroup($this->behalf_group_id, $this->org_id);
 
-    // Adjust on behalf user.
+    // Adjust on behalf user to first found user in subgroup.
     $this->adjustBehalfId();
     return;
   }
 
-   // setOnBehalfUser sets on behalf user both the object and the session.
+  // setOnBehalfUser sets on behalf user both the object and the session.
   function setOnBehalfUser($user_id) {
 
     // Unset things first.
     $this->behalf_id = null;
     $this->behalf_name = null;
+    unset($this->behalfUser);
     unset($_SESSION['behalf_id']);
     unset($_SESSION['behalf_name']);
 
@@ -808,6 +898,21 @@ class ttUser {
     $_SESSION['behalf_name'] = $onBehalfUserName;
     $this->behalf_id = $user_id;
     $this->behalf_name = $onBehalfUserName;
+
+    $this->behalfUser = new ttBehalfUser($this->behalf_id, $this->org_id);
     return;
   }
+
+  // The exists() function determines if an active user exists in context of a page.
+  // If we are working as self, true.
+  // If we are working in a subgroup with active users, true.
+  // If we are working in a subgroup without active users, false.
+  function exists() {
+    if (!$this->behalfGroup)
+      return true; // Working as self.
+    else if ($this->behalfGroup->active_users)
+      return true; // Subgroup has users.
+
+    return false;
+  }
 }