Added a couple helper functions to Ledger.

git-svn-id: file:///svn-source/pmgr/branches/invoice_receipt_20090629@347 97e9348a-65ac-dc4b-aefc-98561f571b83

site/models/ledger.php

@@ -46,6 +46,34 @@ class Ledger extends AppModel {
   );
 
 
+  /**************************************************************************
+   **************************************************************************
+   **************************************************************************
+   * function: accountID
+   *  - Returns the account ID for the given ledger
+   */
+  function accountID($id) {
+    $this->cacheQueries = true;
+    $item = $this->find('first', array
+			('contain' => 'Account.id',
+			 'conditions' => array('Ledger.id' => $id),
+			 ));
+    $this->cacheQueries = false;
+    return $item['Account']['id'];
+  }
+
+
+  /**************************************************************************
+   **************************************************************************
+   **************************************************************************
+   * function: currentLedgerID
+   *  - Returns the current ledger ID of the account for the given ledger.
+   */
+  function currentLedgerID($id) {
+    return $this->Account->currentLedgerID($this->accountID($id));
+  }
+
+
   /**************************************************************************
    **************************************************************************
    **************************************************************************