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添加一个term reference的自动完成字段
<?php
//--添加字段
function taxonomy_field_widget_info() {
return array(
'taxonomy_autocomplete' => array(
'label' => t('Autocomplete term widget (tagging)'),
'field types' => array('taxonomy_term_reference'),
'settings' => array(
'size' => 60,
'autocomplete_path' => 'taxonomy/autocomplete', //--调用路径
),
'behaviors' => array(
'multiple values' => FIELD_BEHAVIOR_CUSTOM,
),
),
);
}
//--定义路径
$items['taxonomy/autocomplete'] = array(
'title' => 'Autocomplete taxonomy',
'page callback' => 'taxonomy_autocomplete', //--调用函数
'access arguments' => array('access content'),
'type' => MENU_CALLBACK,
'file' => 'taxonomy.pages.inc',
);
//--获取数据
function taxonomy_autocomplete($field_name, $tags_typed = '') {
// If the request has a '/' in the search text, then the menu system will have
// split it into multiple arguments, recover the intended $tags_typed.
$args = func_get_args();
// Shift off the $field_name argument.
array_shift($args);
$tags_typed = implode('/', $args);
// Make sure the field exists and is a taxonomy field.
if (!($field = field_info_field($field_name)) || $field['type'] !== 'taxonomy_term_reference') {
// Error string. The JavaScript handler will realize this is not JSON and
// will display it as debugging information.
print t('Taxonomy field @field_name not found.', array('@field_name' => $field_name));
exit;
}
// The user enters a comma-separated list of tags. We only autocomplete the last tag.
$tags_typed = drupal_explode_tags($tags_typed);
$tag_last = drupal_strtolower(array_pop($tags_typed));
$matches = array();
if ($tag_last != '') {
// Part of the criteria for the query come from the field's own settings.
$vids = array();
$vocabularies = taxonomy_vocabulary_get_names();
foreach ($field['settings']['allowed_values'] as $tree) {
$vids[] = $vocabularies[$tree['vocabulary']]->vid;
}
$query = db_select('taxonomy_term_data', 't');
$query->addTag('translatable');
$query->addTag('term_access');
// Do not select already entered terms.
if (!empty($tags_typed)) {
$query->condition('t.name', $tags_typed, 'NOT IN');
}
// Select rows that match by term name.
$tags_return = $query
->fields('t', array('tid', 'name'))
->condition('t.vid', $vids)
->condition('t.name', '%' . db_like($tag_last) . '%', 'LIKE')
->range(0, 10)
->execute()
->fetchAllKeyed();
$prefix = count($tags_typed) ? drupal_implode_tags($tags_typed) . ', ' : '';
$term_matches = array();
foreach ($tags_return as $tid => $name) {
$n = $name;
// Term names containing commas or quotes must be wrapped in quotes.
if (strpos($name, ',') !== FALSE || strpos($name, '"') !== FALSE) {
$n = '"' . str_replace('"', '""', $name) . '"';
}
$term_matches[$prefix . $n] = check_plain($name);
}
}
drupal_json_output($term_matches);//--json格式的数据返回
}
?>