(1)Add tag edit field in album/photo edit form. (2)provide edit functionality. (3)support multi-word tagging.

2 files changed, 85 insertions, 0 deletions

diff --git a/modules/tag/helpers/tag.php b/modules/tag/helpers/tag.php
index ab5ee303..ba8a438e 100644
--- a/modules/tag/helpers/tag.php
+++ b/modules/tag/helpers/tag.php
@@ -51,6 +51,59 @@ class tag_Core {
   }
 
   /**
+   * Modify the tags associate with an item.
+   *
+   * @param Item_Model $item an item
+   * @param string     $new_tags_string a string of new tags name seperated by ;
+   * @return null
+   * @throws Exception("@todo {$tag_name} WAS_NOT_ADDED_TO {$item->id}")
+   * @throws Exception("@todo {$tag_name} WAS_NOT_DELETED_TO {$item->id}")
+   */
+  static function update($item, $new_tags_string) {
+    $old_tags = self::get_tags($item);
+
+    $new_tags = preg_split("/[,;]/", $new_tags_string);
+    foreach ($new_tags as $i => $new_tag) {
+      $new_tags[$i] = trim($new_tag);
+    }
+
+    $add_tags = array_diff($new_tags, $old_tags);
+    foreach ($add_tags as $tag_name) {
+      if (empty($tag_name)) continue;
+      $tag = ORM::factory("tag")->where("name", $tag_name)->find();
+      if (!$tag->loaded) {
+        $tag->name = $tag_name;
+        $tag->count = 0;
+        $tag->save();
+      }
+      if (!$tag->has($item)) {
+        if (!$tag->add($item, $tag)) {
+          throw new Exception("@todo {$tag->name} WAS_NOT_ADDED_TO {$item->id}");
+        }
+        $tag->count++;
+        $tag->save();
+      }
+    }
+    
+    $del_tags = array_diff($old_tags, $new_tags);
+    foreach ($del_tags as $tag_name) {
+      $tag = ORM::factory("tag")->where("name", $tag_name)->find();
+      if ($tag->has($item)) {
+        if (!$tag->remove($item, $tag)) {
+          throw new Exception("@todo {$tag->name} WAS_NOT_DELETED_TO {$item->id}");
+        }
+        $tag->save();
+        $tag->count--;
+        if ($tag->count <= 0) {
+          $tag->delete();
+        } else {
+          $tag->save();
+        }
+      }
+    }
+  }
+
+  /**
    * Return the N most popular tags.
    *
    * @return ORM_Iterator of Tag_Model in descending tag count order
@@ -127,4 +180,18 @@ class tag_Core {
     $group->submit("")->value(t("Delete Tag"));
     return $form;
   }
+  
+  static function get_tags($item) {
+    $records = ORM::factory("item")
+                    ->select("tags.name as tag_name")
+                    ->join("items_tags", "items.id", "items_tags.item_id", "left")
+                    ->join("tags", "items_tags.tag_id", "tags.id", "left")
+                    ->where("items.id", $item->id)
+                    ->find_all();
+    $tags = array(); 
+    foreach ($records as $record) {
+      $tags[] = $record->tag_name;
+    }
+    return $tags; 
+  }
 }
\ No newline at end of file
diff --git a/modules/tag/helpers/tag_event.php b/modules/tag/helpers/tag_event.php
index 0164f556..0b9504b3 100644
--- a/modules/tag/helpers/tag_event.php
+++ b/modules/tag/helpers/tag_event.php
@@ -67,4 +67,22 @@ class tag_event_Core {
                "SELECT `tag_id` from {items_tags} WHERE `item_id` = $item->id)");
     $db->delete("items_tags", array("item_id" => "$item->id"));
   }
+  
+  static function album_edit_form($album, $form) {
+    $tag_value = implode('; ', tag::get_tags($album));
+    $form->edit_album->input("tags")->label(t("Tags ( seperate by , or ; )"))->value($tag_value);
+  }
+  
+  static function album_edit_form_completed($album, $form) {
+    tag::update($album, $form->edit_album->tags->value);
+  }
+  
+  static function photo_edit_form($photo, $form) {
+    $tag_value = implode('; ', tag::get_tags($photo));
+    $form->edit_photo->input("tags")->label(t("Tags ( seperate by , or ; )"))->value($tag_value);
+  }
+  
+  static function photo_edit_form_completed($photo, $form) {
+    tag::update($photo, $form->edit_photo->tags->value);
+  }
 }