A category can have its representative picture

git-svn-id: http://piwigo.org/svn/trunk@133 68402e56-0260-453c-a942-63ccdbb3a9ee

2 files changed, 76 insertions, 2 deletions

diff --git a/admin/include/functions.php b/admin/include/functions.php
index 2763c890e..0f35c2798 100644
--- a/admin/include/functions.php
+++ b/admin/include/functions.php
@@ -291,7 +291,8 @@ function check_favorites( $user_id )
 }
 
 // update_category updates calculated informations about a category :
-// date_last and nb_images
+// date_last and nb_images. It also verifies that the representative picture
+// is really linked to the category.
 function update_category( $id = 'all' )
 {
   if ( $id == 'all' )
@@ -333,6 +334,32 @@ function update_category( $id = 'all' )
     $query.= ' WHERE id = '.$id;
     $query.= ';';
     mysql_query( $query );
+    // updating the representative_picture_id : if the representative
+    // picture of the category is not any more linked to the category, we
+    // have to set representative_picture_id to NULL
+    $query = 'SELECT representative_picture_id';
+    $query.= ' FROM '.PREFIX_TABLE.'categories';
+    $query.= ' WHERE id = '.$id;
+    $row = mysql_fetch_array( mysql_query( $query ) );
+    // if the category has no representative picture (ie
+    // representative_picture_id == NULL) we don't update anything
+    if ( $row['representative_picture_id'] != '' )
+    {
+      $query = 'SELECT image_id';
+      $query.= ' FROM '.PREFIX_TABLE.'image_category';
+      $query.= ' WHERE category_id = '.$id;
+      $query.= ' AND image_id = '.$row['representative_picture_id'];
+      $query.= ';';
+      $result = mysql_query( $query );
+      if ( mysql_num_rows( $result ) == 0 )
+      {
+        $query = 'UPDATE '.PREFIX_TABLE.'categories';
+        $query.= ' SET representative_picture_id = NULL';
+        $query.= ' WHERE id = '.$id;
+        $query.= ';';
+        mysql_query( $query );
+      }
+    }
   }
 }
 
diff --git a/admin/picture_modify.php b/admin/picture_modify.php
index 804cc8e2c..3eaa0748e 100644
--- a/admin/picture_modify.php
+++ b/admin/picture_modify.php
@@ -73,6 +73,39 @@ if ( isset( $_POST['submit'] ) )
   $query.= ' WHERE id = '.$_GET['image_id'];
   $query.= ';';
   mysql_query( $query );
+  // make the picture representative of a category ?
+  $query = 'SELECT DISTINCT(category_id) as category_id';
+  $query.= ',representative_picture_id';
+  $query.= ' FROM '.PREFIX_TABLE.'image_category AS ic';
+  $query.= ', '.PREFIX_TABLE.'categories AS c';
+  $query.= ' WHERE c.id = ic.category_id';
+  $query.= ' AND image_id = '.$_GET['image_id'];
+  $query.= ';';
+  $result = mysql_query( $query );
+  while ( $row = mysql_fetch_array( $result ) )
+  {
+    // if the user ask the picture to be the representative picture of its
+    // category, the category is updated in the database (without wondering
+    // if this picture was already the representative one)
+    if ( $_POST['representative-'.$row['category_id']] == 1 )
+    {
+      $query = 'UPDATE '.PREFIX_TABLE.'categories';
+      $query.= ' SET representative_picture_id = '.$_GET['image_id'];
+      $query.= ' WHERE id = '.$row['category_id'];
+      $query.= ';';
+      mysql_query( $query );
+    }
+    // if the user ask this picture to be not any more the representative,
+    // we have to set the representative_picture_id of this category to NULL
+    else if ( $row['representative_picture_id'] == $_GET['image_id'] )
+    {
+      $query = 'UPDATE '.PREFIX_TABLE.'categories';
+      $query.= ' SET representative_picture_id = NULL';
+      $query.= ' WHERE id = '.$row['category_id'];
+      $query.= ';';
+      mysql_query( $query );
+    }
+  }
   // associate with a new category ?
   if ( $_POST['associate'] != '-1' )
   {
@@ -111,7 +144,7 @@ $tpl = array( 'submit','errors_title','picmod_update','picmod_back',
               'default','file','size','filesize','registration_date',
               'author','creation_date','keywords','comment', 'upload_name',
               'dissociate','categories','infoimage_associate',
-              'cat_image_info' );
+              'cat_image_info','category_representative' );
 templatize_array( $tpl, 'lang', $sub );
 $vtp->setGlobalVar( $sub, 'user_template', $user['template'] );
 //-------------------------------------------------------------- errors display
@@ -205,9 +238,16 @@ if ( !$result['visible'] )
   $invisible_string.= $lang['cat_invisible'].'</span>';
   $vtp->setVar( $sub, 'linked_category.invisible', $invisible_string );
 }
+$vtp->setVar( $sub, 'linked_category.id', $row['storage_category_id'] );
+if ( $result['representative_picture_id'] == $_GET['image_id'] )
+{
+  $vtp->setVar( $sub, 'linked_category.representative_checked',
+                ' checked="checked"' );
+}
 $vtp->closeSession( $sub, 'linked_category' );
 // retrieving all the linked categories
 $query = 'SELECT DISTINCT(category_id) as category_id,status,visible';
+$query.= ',representative_picture_id';
 $query.= ' FROM '.PREFIX_TABLE.'image_category';
 $query.= ','.PREFIX_TABLE.'categories';
 $query.= ' WHERE image_id = '.$_GET['image_id'];
@@ -218,6 +258,7 @@ $result = mysql_query( $query );
 while ( $row = mysql_fetch_array( $result ) )
 {
   $vtp->addSession( $sub, 'linked_category' );
+  $vtp->setVar( $sub, 'linked_category.id', $row['category_id'] );
 
   $vtp->addSession( $sub, 'checkbox' );
   $vtp->setVar( $sub, 'checkbox.id', $row['category_id'] );
@@ -249,6 +290,12 @@ while ( $row = mysql_fetch_array( $result ) )
     $vtp->setVar( $sub, 'linked_category.invisible', $invisible_string );
   }
 
+  if ( $row['representative_picture_id'] == $_GET['image_id'] )
+  {
+    $vtp->setVar( $sub, 'linked_category.representative_checked',
+                  ' checked="checked"' );
+  }
+  
   $vtp->closeSession( $sub, 'linked_category' );
 }
 // if there are linked category other than the storage category, we show