field['field_name'];
// Get the FK column that links to the base table.
$table_name = $this->instance['settings']['chado_table'];
$base_table = $this->instance['settings']['base_table'];
$schema = chado_get_schema($table_name);
$pkey = $schema['primary key'][0];
$fkeys = array_values($schema['foreign keys'][$base_table]['columns']);
$fkey = $fkeys[0];
// Get the field defaults.
$pkey_val = '';
$fkey_value = '';
$pub_id = '';
$title = '';
// If the field already has a value then it will come through the $items
// array. This happens when editing an existing record.
if (count($items) > 0 and array_key_exists($delta, $items)) {
$pkey_val = tripal_get_field_item_keyval($items, $delta, 'chado-' . $table_name . '__' . $pkey, $pkey_val);
$fkey_value = tripal_get_field_item_keyval($items, $delta, 'chado-' . $table_name . '__' . $fkey, $fkey_value);
$pub_id = tripal_get_field_item_keyval($items, $delta, 'chado-' . $table_name . '__pub_id', $pub_id);
if ($pub_id) {
$pub = tripal_get_publication(array('pub_id' => $pub_id));
$title = $pub->title . ' [id:' . $pub->pub_id . ']';
}
}
// Check $form_state['values'] to see if an AJAX call set the values.
if (array_key_exists('values', $form_state) and
array_key_exists($field_name, $form_state['values'])) {
$title = $form_state['values'][$field_name]['und'][$delta]['pub_title'];
$pub_id = $form_state['values'][$field_name]['und'][$delta]['accession'];
}
$schema = chado_get_schema('pub');
$widget['#table_name'] = $table_name;
$widget['#fkey_field'] = $fkey;
$widget['#prefix'] = "";
$widget['#suffix'] = "";
$widget['value'] = array(
'#type' => 'value',
'#value' => array_key_exists($delta, $items) ? $items[$delta]['value'] : '',
);
$widget['chado-' . $table_name . '__' . $pkey] = array(
'#type' => 'value',
'#default_value' => $pkey_val,
);
$widget['chado-' . $table_name . '__' . $fkey] = array(
'#type' => 'value',
'#default_value' => $fkey_value,
);
$widget['chado-' . $table_name . '__pub_id'] = array(
'#type' => 'value',
'#default_value' => $pub_id,
);
$widget['pub_title'] = array(
'#type' => 'textfield',
'#title' => t('Publication'),
'#default_value' => $title,
'#autocomplete_path' => 'admin/tripal/storage/chado/auto_name/pub',
'#maxlength' => 100000,
);
}
/**
*
* @see TripalFieldWidget::submit()
*/
public function validate($element, $form, &$form_state, $langcode, $delta) {
// Get the FK column that links to the base table.
$table_name = $this->instance['settings']['chado_table'];
$base_table = $this->instance['settings']['base_table'];
$schema = chado_get_schema($table_name);
$pkey = $schema['primary key'][0];
$fkeys = array_values($schema['foreign keys'][$base_table]['columns']);
$fkey = $fkeys[0];
$field_name = $this->field['field_name'];
// Get the field values.
$fkey_value = $form_state['values'][$field_name]['und'][$delta]['value'];
$pub_id = $form_state['values'][$field_name]['und'][$delta]['chado-' . $table_name . '__pub_id'];
$title = $form_state['values'][$field_name]['und'][$delta]['pub_title'];
// If the user provided a pub_title then we want to set the foreign key
// value to be the chado_record_id
if ($title) {
$matches = array();
if (preg_match('/^.*\[id:(\d+)]$/', $title, $matches)) {
$pub_id = $matches[1];
$pub = chado_generate_var('pub', array('pub_id' => $pub_id));
$form_state['values'][$field_name]['und'][$delta]['chado-' . $table_name . '__pub_id'] = $pub->pub_id;
$form_state['values'][$field_name]['und'][$delta]['value'] = $pub->pub_id;
}
}
// In the widgetFrom function we automatically add the foreign key
// record. But if the user did not provide a publication we want to take
// it out so that the Chado field_storage infrastructure won't try to
// write a record.
if (!$title) {
$form_state['values'][$field_name]['und'][$delta]['value'] = 'delete_me';
$form_state['values'][$field_name]['und'][$delta]['chado-' . $table_name . '__' . $fkey] = '';
$form_state['values'][$field_name]['und'][$delta]['chado-' . $table_name . '__pub_id'] = '';
}
}
/**
* @see TripalFieldWidget::theme()
*/
function theme($element) {
$layout = "
";
return $layout;
}
}
/**
* An Ajax callback for the pub widget.
*/
function schema__publication_widget_form_ajax_callback($form, $form_state) {
$field_name = $form_state['triggering_element']['#parents'][0];
$delta = $form_state['triggering_element']['#parents'][2];
return $form[$field_name]['und'][$delta];
}