issue79, show only certain tags

git-svn-id: file:///var/lib/svn/phpfspot/trunk@306 fa6a889d-dae6-447d-9e79-4ba9a3039384

2 files changed, 101 insertions, 11 deletions

diff --git a/phpfspot.class.php b/phpfspot.class.php
index 6c150fa..15697ad 100644
--- a/phpfspot.class.php
+++ b/phpfspot.class.php
@@ -185,7 +185,7 @@ class PHPFSPOT {
     *
     * this function will get all available tags from
     * the f-spot database and store them within two
-    * arrays within this clase for later usage. in
+    * arrays within this class for later usage. in
     * fact, if the user requests (hide_tags) it will
     * opt-out some of them.
     *
@@ -207,13 +207,23 @@ class PHPFSPOT {
          $tag_id = $row['id'];
          $tag_name = $row['name'];
 
-         /* check if config requests to ignore this tag */
+         /* if the user has specified to ignore this tag in phpfspot's
+            configuration, ignore it here so it does not get added to
+            the tag list.
+         */
          if(in_array($row['name'], $this->cfg->hide_tags))
             continue;
 
+         /* if the user has specified to only show certain tags which
+            are specified in phpfspot's configuration, ignore all others
+            so they will not be added to the tag list.
+         */
+         if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags) &&
+            !in_array($row['name'], $this->cfg->show_tags))
+            continue;
+
          $this->tags[$tag_id] = $tag_name; 
          $this->avail_tags[$count] = $tag_id;
-
          $count++;
 
       }
@@ -228,12 +238,36 @@ class PHPFSPOT {
     */
    public function get_photo_details($idx)
    {
-      $result = $this->db->db_query("
-         SELECT *
-         FROM photos
-         WHERE id='". $idx ."'
-      ");
-      
+      $query_str = "
+         SELECT p.id, p.name, p.time, p.directory_path, p.description
+         FROM photos p
+      ";
+
+      /* if show_tags is set, only return details for photos which
+         are specified to be shown
+      */
+      if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
+         $query_str.= "
+            INNER JOIN photo_tags pt
+               ON p.id=pt.photo_id
+            INNER JOIN tags t
+               ON pt.tag_id=t.id
+            WHERE p.id='". $idx ."'
+            AND t.name IN (
+         ";
+         foreach($this->cfg->show_tags as $tag) {
+            $query_str.= "'". $tag ."',";
+         }
+         $query_str = substr($query_str, 0, strlen($query_str)-1);
+         $query_str.= ")";
+      }
+      else {
+         $query_str.= "
+            WHERE p.id='". $idx ."'
+         ";
+      }
+
+      $result = $this->db->db_query($query_str);
       return $this->db->db_fetch_object($result);
 
    } // get_photo_details
@@ -470,7 +504,9 @@ class PHPFSPOT {
           // uncomment if you want sizes in whole %:
          $size = ceil($size);
 
-         $output.= "<a href=\"javascript:Tags('add', ". $key .");\" class=\"tag\" style=\"font-size: ". $size ."%;\">". $this->tags[$key] ."</a>, ";
+         if(isset($this->tags[$key])) {
+            $output.= "<a href=\"javascript:Tags('add', ". $key .");\" class=\"tag\" style=\"font-size: ". $size ."%;\">". $this->tags[$key] ."</a>, ";
+         }
 
       }
 
@@ -628,6 +664,15 @@ class PHPFSPOT {
 
          if(isset($additional_where_cond))
             $query_str.= "AND ". $additional_where_cond ." ";
+
+         if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
+            $query_str.= "AND t.name IN (";
+            foreach($this->cfg->show_tags as $tag) {
+               $query_str.= "'". $tag ."',";
+            }
+            $query_str = substr($query_str, 0, strlen($query_str)-1) . ")";
+         }
+         
          if(isset($order_str))
             $query_str.= $order_str;
 
@@ -647,14 +692,25 @@ class PHPFSPOT {
 
          if($_SESSION['tag_condition'] == 'or') {
             $query_str = "
-               SELECT DISTINCT photo_id
+               SELECT DISTINCT pt.photo_id
                   FROM photo_tags pt
                INNER JOIN photos p
                   ON p.id=pt.photo_id
+               INNER JOIN tags t
+                  ON pt.tag_id=t.id
                WHERE pt.tag_id IN (". $selected .")
             ";
             if(isset($additional_where_cond)) 
                $query_str.= "AND ". $additional_where_cond ." ";
+
+            if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
+               $query_str.= "AND t.name IN (";
+               foreach($this->cfg->show_tags as $tag) {
+                  $query_str.= "'". $tag ."',";
+               }
+               $query_str = substr($query_str, 0, strlen($query_str)-1) . ")";
+            }
+
             if(isset($order_str))
                $query_str.= $order_str;
          }
@@ -680,6 +736,13 @@ class PHPFSPOT {
                   FROM photo_tags pt1
             ";
 
+            if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
+               $query_str.= "
+                  INNER JOIN tags t
+                     ON pt1.tag_id=t.id
+               ";
+            }
+
             for($i = 0; $i < count($_SESSION['selected_tags']); $i++) {
                $query_str.= "
                   INNER JOIN photo_tags pt". ($i+2) ."
@@ -698,8 +761,18 @@ class PHPFSPOT {
             }
             if(isset($additional_where_cond)) 
                $query_str.= "AND ". $additional_where_cond;
+
+            if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
+               $query_str.= "AND t.name IN (";
+               foreach($this->cfg->show_tags as $tag) {
+                  $query_str.= "'". $tag ."',";
+               }
+               $query_str = substr($query_str, 0, strlen($query_str)-1) . ")";
+            }
+
             if(isset($order_str))
                $query_str.= $order_str;
+
          }
 
          $result = $this->db->db_query($query_str);
@@ -715,9 +788,20 @@ class PHPFSPOT {
             FROM photo_tags pt
          INNER JOIN photos p
             ON p.id=pt.photo_id
+         INNER JOIN tags t
+            ON pt.tag_id=t.id
       ";
       if(isset($additional_where_cond)) 
          $query_str.= "WHERE ". $additional_where_cond ." ";
+
+      if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
+         $query_str.= "AND t.name IN (";
+         foreach($this->cfg->show_tags as $tag) {
+            $query_str.= "'". $tag ."',";
+         }
+         $query_str = substr($query_str, 0, strlen($query_str)-1) . ")";
+      }
+ 
       if(isset($order_str))
          $query_str.= $order_str;
 
diff --git a/phpfspot_cfg.php.dist b/phpfspot_cfg.php.dist
index 506eaa1..85e1752 100644
--- a/phpfspot_cfg.php.dist
+++ b/phpfspot_cfg.php.dist
@@ -80,6 +80,12 @@ class PHPFSPOT_CFG {
    */
    var $hide_tags = Array("Favorites", "Hidden", "People", "Places", "Events");
 
+   /* Show only pictures which are tagged with the following tags.
+      Comment out this option with // if you want to show all tags &
+      pictures.
+   */
+   //var $show_tags = Array("Friends", "Holidays");
+
    /* logging = display || errorlog || logfile */
    var $logging = "display";