Posted by kevin.mcnamee@m... on March 27, 2012 at 10:45pm
Hi,
I am using Draggable tables to organise nodes. One node type is defined as parent for the other node types. I wanted to display a "delete" link beside the child nodes, but not the parent nodes.
The solution I came up with was to create a Views handler based on the "Custom text" handler. The user configures which field in the View containes the node type of the current node (the field must be added to the View of course and probably excluded from the display). The user also selects which node types should control whether the custom text is displayed (or not). The custom text itself can be made up of tokens from other fields as usual.
Is there a better way or cleaner way?
Best regards,
Kevin
mymodule.view.inc:
<?php
/<strong>
* Implementation of hook_views_handlers().
*/
function mymodule_views_handlers() {
$path = drupal_get_path('module', 'mymodule') . '/views';
$data['handlers']['mymodule_handler_field_custom_conditional'] = array(
'parent' => 'views_handler_field_custom',
'path' => "$path",
);
return $data;
}
/</strong>
* Implementation of hook_views_data().
*/
function mymodule_views_data() {
$data = array();
$data['views']['type_conditional'] = array(
'title' => t('Custom text conditional (My Module)'),
'help' => t('Provide custom text or link if it matches specific node type(s).'),
'field' => array(
'handler' => 'mymodule_handler_field_custom_conditional',
'click sortable' => FALSE,
),
);
return $data;
}
?>mymodule_handler_field_custom_conditional.inc:
<?php
/<strong>
* @file
* Contains the mymodule_handler_field_custom_conditional field handler.
*/
/</strong>
* Display conditional information based on node type.
*/
class mymodule_handler_field_custom_conditional extends views_handler_field_custom {
function option_definition() {
$options = parent::option_definition();
$options['mymodule']['node_type_field'] = array('default' => '');
$options['mymodule']['operator'] = array('default' => 'in');
$options['mymodule']['value'] = array('default' => array());
return $options;
}
/<strong>
* Define the extra form elements for the field.
*/
function options_form(&$form, &$form_state) {
parent::options_form($form, $form_state);
$form['mymodule'] = array(
'#type' => 'fieldset',
'#title' => t('Conditional display on'),
);
$form['mymodule']['node_type_field'] = array(
'#type' => 'textfield',
'#title' => 'Node type field',
'#default_value' => $this->options['mymodule']['node_type_field'],
'#description' => t('The field containing the node type as per the "Replacement patterns" above, e.g. "[type]". The checkbox "Output machine name" must be checked for that field.'),
);
module_load_include('inc', 'views', 'handlers/views_handler_filter');
module_load_include('inc', 'views', 'handlers/views_handler_filter_in_operator');
module_load_include('inc', 'views', 'modules/node/views_handler_filter_node_type');
// The node type filter handler has all the necessary code for selecting node types.
$filter_node_type = new views_handler_filter_node_type();
// Silence error.
$filter_node_type->options['expose']['available_operators'] = array();
// Borrowed from views_handler_filter.inc.
$form['op_val_start'] = array('#value' => '<div class="clear-block">');
$filter_node_type->show_operator_form($form, $form_state);
$filter_node_type->show_value_form($form, $form_state);
$form['op_val_end'] = array('#value' => '</div>');
// Reorganise form.
$form['mymodule']['operator'] = $form['operator'];
$form['mymodule']['value'] = $form['value'];
unset($form['operator']);
unset($form['value']);
// Set default values.
$form['mymodule']['operator']['#default_value'] = $this->options['mymodule']['operator'];
$form['mymodule']['value']['#default_value'] = $this->options['mymodule']['value'];
}
/</strong>
* Render the field.
*/
function advanced_render($values) {
$value = parent::advanced_render($values);
$node_type_field = $this->options['mymodule']['node_type_field'];
$selected_node_types = array_values($this->options['mymodule']['value']);
$operator = $this->options['mymodule']['operator'];
$current_type = $this->last_tokens[$node_type_field];
// Default to base class behaviour if the field type is not found.
if (empty($current_type)) {
return $value;
}
if ($operator == 'in') {
if (in_array($current_type, $selected_node_types, TRUE)) {
return $value;
}
} else {
if (!in_array($current_type, $selected_node_types, TRUE)) {
return $value;
}
}
}
}
?>
Comments
Drupal 6
I should mention that I am working in Drupal 6.
Correction
Hi,
the last piece of render code should look like this:
<?phpif ($operator == 'in') {
if (in_array($current_type, $selected_node_types, TRUE)) {
return $value;
}
} elseif ($operator == 'not in') {
if (!in_array($current_type, $selected_node_types, TRUE)) {
return $value;
}
} else {
return $value;
}
?>