Added ability to delete a lock

git-svn-id: file:///svn-source/pmgr/branches/v0.3_work@1040 97e9348a-65ac-dc4b-aefc-98561f571b83

site/controllers/locks_controller.php

@@ -75,10 +75,10 @@ class LocksController extends AppController {
   function view($id = null) {
     if (!$id) {
       $this->Session->setFlash(__('Invalid Item.', true));
-      $this->redirect(array('controller' => 'accounts', 'action'=>'index'));
+      $this->redirect(array('controller' => 'locks', 'action'=>'index'));
     }
 
-    // Get the UnitSize and related fields
+    // Get the lock and related fields
     $this->Lock->id = $id;
     $lock = $this->Lock->find
       ('first', array
@@ -91,6 +91,10 @@ class LocksController extends AppController {
 			   array('action' => 'edit', $id), null,
 			   'ACTION');
 
+    $this->addSideMenuLink('Delete',
+			   array('action' => 'delete', $id), null,
+			   'ACTION');
+
     $this->set(compact('lock'));
 
     // Prepare to render.
@@ -158,4 +162,55 @@ class LocksController extends AppController {
     $this->edit();
   }
 
+  /**************************************************************************
+   **************************************************************************
+   **************************************************************************
+   * action: delete
+   *  - Deletes an old lock
+   */
+  function delete($id) {
+    if (isset($this->data)) {
+      // Check to see if the operation was cancelled.
+      if (isset($this->params['form']['cancel'])) {
+	if (isset($this->data['Lock']['id']))
+	  $this->redirect(array('action'=>'view', $this->data['Lock']['id']));
+
+	$this->redirect(array('action'=>'index'));
+      }
+
+      // Delete the lock and all associated data
+      if (!$this->Lock->destroy($this->data['Lock']['id'])) {
+	$this->Session->setFlash(__('Failed to delete lock.', true));
+	$this->redirect(array('action'=>'view', $this->data['Lock']['id']));
+      }
+
+      // It's gone. Go back to the list of locks
+      $this->redirect(array('controller' => 'locks', 'action'=>'index'));
+    }
+
+    // User must specify an ID.
+    if (!$id) {
+      $this->Session->setFlash(__('Invalid Item.', true));
+      $this->redirect(array('controller' => 'locks', 'action'=>'index'));
+    }
+
+    // Get the lock and related fields
+    $this->Lock->id = $id;
+    $lock = $this->Lock->find
+      ('first', array
+       ('contain' => array('Unit'),
+	));
+
+    // Make sure the lock isn't in use.
+    if (isset($lock['Unit']) && count($lock['Unit']) > 0) {
+      $this->Session->setFlash(__('Lock currently on units. Cannot be deleted!', true));
+      $this->redirect(array('action'=>'view', $id));
+    }
+    
+    // Prepare to render.
+    $this->data = $lock;
+    $title = "Delete Lock : {$lock['Lock']['name']}";
+    $this->set(compact('title'));
+  }
+
 }

site/models/lock.php

@@ -57,6 +57,41 @@ class Lock extends AppModel {
     return $this->prReturn($this->save($data, false));
   }
 
+
+  /**************************************************************************
+   **************************************************************************
+   **************************************************************************
+   * function: destroy
+   *  - destroys a lock
+   */
+
+  function destroy($id) {
+    $this->prEnter(compact('id'));
+
+    // Can't delete a lock that's in use... check.
+    $this->id = $id;
+    $lock = $this->find
+      ('first', array
+       ('contain' => array('Unit'),
+	));
+
+    // If it's in use, bail with error
+    $this->pr(1, $lock);
+    if (isset($lock['Unit']) && count($lock['Unit']) > 0)
+      return $this->prReturn(false);
+
+    // Otherwise, attempt to delete the lock from the database
+    return $this->prReturn($this->delete());
+  }
+
+
+  /**************************************************************************
+   **************************************************************************
+   **************************************************************************
+   * function: lockList
+   *  - list of all locks in the system
+   */
+
   function lockList() {
     return $this->find('list',
 		       array('order' =>

site/views/locks/delete.ctp

@@ -0,0 +1,18 @@
+<?php /* -*- mode:PHP -*- */
+; // alignment
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************
+ **********************************************************************
+ * Lock Delete
+ */
+
+echo '<div class="lock delete">' . "\n";
+
+echo $form->create('Lock', array('action' => 'delete')) . "\n";
+echo $form->input('id') . "\n";
+echo $form->submit('Delete Lock') . "\n";
+echo $form->submit('Cancel', array('name' => 'cancel')) . "\n";
+echo $form->end() . "\n";
+echo '</div>' . "\n";