add CommonTable->delete() method

1 files changed, 40 insertions, 2 deletions

diff --git a/class/CommonTable.php b/class/CommonTable.php
index 57c701b..f08b29e 100644
--- a/class/CommonTable.php
+++ b/class/CommonTable.php
@@ -73,6 +73,8 @@ abstract class CommonTable
      * Execute an SQL statement (INSERT, DELETE, ...)
      *
      * @param string $sql The SQL clause
+     *
+     * @param integer number of affected rows
      */
     protected function exec($sql)
     {
@@ -81,14 +83,17 @@ abstract class CommonTable
             $err = $this->db->errorInfo();
             throw new Exception($err[2]);
         }
+        return $res;
     }
 
     /**
      * Add a new row in the table
      *
      * @param hashtable $fields hashtable of fieldname => value
+     *
+     * @return integer primary key of inserted row
      */
-    protected function add(array $fields)
+    public function add(array $fields)
     {
         $col = array();
         $val = array();
@@ -99,15 +104,48 @@ abstract class CommonTable
             } else if (is_numeric($value)) {
                 $val[] = $value;
             } else {
-                $val[] = "'$value'";
+                $val[] = "'".addslashes($value)."'";
             }
         }
         $sql = "INSERT INTO `".$this->table."` (".implode(',', $col).")
                 VALUE (".implode(',', $val).")";
         $this->exec($sql);
+
+        $id = $this->db->lastInsertId();
+
+        return $id;
     }
 
     /**
+     * Delete a row in the table
+     *
+     * @param hashtable $crit of key => value
+     *
+     * @return integer : number of row deleted
+     */
+    public function delete(array $crit)
+    {
+        $sql = "DELETE FROM `".$this->table."` ";
+
+        $link="WHERE";
+        foreach ($crit as $key => $value) {
+            $sql .= " $link `$key`";
+
+            if (is_null($value)) {
+                $sql .= 'IS NULL';
+            } else if (is_numeric($value)) {
+                $sql .= '='.$value;
+            } else {
+                $sql .= "='".addslashes($value)."'";
+            }
+
+            $link = "AND";
+        }
+        $nb = $this->exec($sql);
+
+        return $nb;
+    }
+    /**
      * Create the table
      */
     abstract protected function createTable();