Changing schemas on the fly

MidCOM datamanager allows you to have multiple page types, or schemas used in a folder. The schemas can provide different editable fields and different styling.

However, by default datamanager doesn't allow you to change a page's schema after it has been initially set. If you want to enable this, here is a quick hack.

• Customize the net.nehmer.static component's template admin-edit for your site

• Add the following below $data['controller']->display_form();

  // Load schema
  eval('$schemadb = Array( ' . midcom_get_snippet_content_graceful($data['config']->get('schemadb')) . " \n);");
  
  
  // Save selected schema
  if (   array_key_exists('net_nemein_customschema_change', $_POST)
      && array_key_exists($_POST['net_nemein_customschema_change'], $schemadb))
  {
      $data['article']->parameter('midcom.helper.datamanager2', 'schema_name', $_POST['net_nemein_customschema_change']);
      // Refresh page to get the new schema's editor
      echo '<script language=\"javascript\">location.replace(window.location + "#");</script>';
  }
  
  
  // Show selection form
  $current_schema = $data['article']->parameter('midcom.helper.datamanager2', 'schema_name');
  echo "<form method=\"post\">\n";
  echo "<label>Page type\n";
  echo "<select name=\"net_nemein_customschema_change\">\n";
  foreach ($schemadb as $schema_name => $schema)
  {
      $selected = '';
      if ($schema_name == $current_schema
          || (   $schema_name == 'default' 
              && $current_schema == ''))
      {
          $selected = ' selected="selected"';
      }
      echo "    <option value=\"{$schema_name}\"{$selected}>{$schema['description']}</option>\n";
  }
  echo "</select>\n";
  echo "</label>\n";
  echo "<input type=\"submit\" value=\"Change type\" />\n";
  echo "</form>\n";
  

• Now the page schema should be easy to change:

Note: This quick tutorial applies only to components utilizing Datamanager 2 but should be easy to adapt to also old-style components.