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Commit b85607b2 authored by Nathan Haug's avatar Nathan Haug
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Signficantly enhancing views support. Now supports argument handling and... 

Signficantly enhancing views support. Now supports argument handling and filtering by link title, url, targets and protocols. Issue #134674.
parent 2c084a68
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link.module
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......@@ -10,6 +10,7 @@ define('LINK_EXTERNAL', 'external');
define('LINK_INTERNAL', 'internal');
define('LINK_FRONT', 'front');
define('LINK_EMAIL', 'email');
define('LINK_DOMAINS', 'aero|arpa|biz|com|cat|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel|mobi');
/**
* Implementation of hook_help().
......@@ -38,7 +39,7 @@ function link_field_settings($op, $field) {
case 'form':
$form = array();
$title_options = array (
$title_options = array(
'optional' => t('Optional Title'),
'required' => t('Required Title'),
'none' => t('No Title'),
......@@ -108,8 +109,37 @@ function link_field_settings($op, $field) {
case 'filters':
return array(
'default' => array(
'name' => t('URL'),
'operator' => 'views_handler_operator_like',
'handler' => 'views_handler_filter_like',
'handler' => 'views_handler_operator_like',
),
'title' => array(
'name' => t('Title'),
'operator' => 'views_handler_operator_like',
'handler' => 'views_handler_operator_like',
),
'protocol' => array(
'name' => t('Protocol'),
'list' => drupal_map_assoc(variable_get('filter_allowed_protocols', array('http', 'https', 'ftp', 'news', 'nntp', 'telnet', 'mailto', 'irc', 'ssh', 'sftp', 'webcal'))),
'operator' => 'views_handler_operator_or',
'handler' => 'link_views_protocol_filter_handler',
),
);
case 'arguments':
return array(
'content: '. $field['field_name'] .'_url' => array(
'name' => t('Link URL') .': '. $field['widget']['label'] .' ('. $field['field_name'] .')',
'handler' => 'link_views_argument_handler',
),
'content: '. $field['field_name'] .'_title' => array(
'name' => t('Link Title') .': '. $field['widget']['label'] .' ('. $field['field_name'] .')',
'handler' => 'link_views_argument_handler',
),
'content: '. $field['field_name'] .'_target' => array(
'name' => t('Link Target') .': '. $field['widget']['label'] .' ('. $field['field_name'] .')',
'handler' => 'link_views_argument_handler',
),
);
......@@ -492,11 +522,115 @@ function link_field_formatter($field, $item, $formatter, $node) {
if ($field['display']['url_cutoff'] && strlen($display_url) > $field['display']['url_cutoff']) {
$display_url = substr($display_url, 0, $field['display']['url_cutoff']) . "...";
}
$output = l($display_url, $url, $attributes, $query, $fragment, array('class' => $field['attributes']['class']));
$output = l($display_url, $url, $attributes, $query, $fragment);
}
return $output;
}
/**
* Views module argument handler for link fields
*/
function link_views_argument_handler($op, &$query, $argtype, $arg = '') {
if ($op == 'filter') {
$field_name = substr($argtype['type'], 9, strrpos($argtype['type'], '_') - 9);
$column = substr($argtype['type'], strrpos($argtype['type'], '_') + 1);
}
else {
$field_name = substr($argtype, 9, strrpos($argtype, '_') - 9);
$column = substr($argtype, strrpos($argtype, '_') + 1);
}
// Right now the only attribute we support in views in 'target', but
// other attributes of the href tag could be added later
if ($column == 'target') {
$attribute = $column;
$column = 'attributes';
}
$field = content_fields($field_name);
$db_info = content_database_info($field);
$main_column = $db_info['columns'][$column];
// The table name used here is the Views alias for the table, not the actual
// table name.
$table = 'node_data_'. $field['field_name'];
switch ($op) {
case 'summary':
$query->ensure_table($table);
$query->add_field($main_column['column'], $table);
return array('field' => $table .'.'. $main_column['column']);
break;
case 'filter':
$query->ensure_table($table);
if ($column == 'attributes') {
// Because attributes are stored serialized, our only option is to also
// serialize the data we're searching for and use LIKE to find similar data
$query->add_where($table .'.'. $main_column['column'] ." LIKE '%%%s%'", serialize($attribute) . serialize($arg));
}
else {
$query->add_where($table .'.'. $main_column['column'] ." = '%s'", $arg);
}
break;
case 'link':
$item = array();
foreach ($db_info['columns'] as $column => $attributes) {
$view_column_name = $attributes['column'];
$item[$column] = $query->$view_column_name;
}
return l(content_format($field, $item, 'plain'), $arg .'/'. $query->$main_column['column'], array(), NULL, NULL, FALSE, TRUE);
case 'sort':
break;
case 'title':
$item = array(key($db_info['columns']) => $query);
return content_format($field, $item);
break;
}
}
/**
* Views modules filter handler for link protocol filtering
*/
function link_views_protocol_filter_handler($op, $filter, $filterinfo, &$query) {
global $db_type;
$protocols = $filter['value'];
$field = $filterinfo['field'];
// $table is not the real table name but the views alias
$table = 'node_data_'. $filterinfo['content_field']['field_name'];
foreach ($protocols as $protocol) {
// Simple case, the URL begins with the specified protocol
$condition = $table .'.'. $field .' LIKE \''. $protocol .'%\'';
// More complex case, no protocol specified but is automatically cleaned up
// by link_cleanup_url(). RegEx is required for this search operation.
if ($protocol == 'http') {
if ($db_type == 'pgsql') {
// PostGreSQL code has NOT been tested. Please report any problems to the link issue queue.
// pgSQL requires all slashes to be double escaped in regular expressions.
// See http://www.postgresql.org/docs/8.1/static/functions-matching.html#FUNCTIONS-POSIX-REGEXP
$condition .= ' OR '. $table .'.'. $field .' ~* \''. '^(([a-z0-9]([a-z0-9\\-_]*\\.)+)('. LINK_DOMAINS .'|[a-z][a-z]))' .'\'';
}
else {
// mySQL requires backslashes to be double (triple?) escaped within character classes.
// See http://dev.mysql.com/doc/refman/5.0/en/string-comparison-functions.html#operator_regexp
$condition .= ' OR '. $table .'.'. $field .' REGEXP \''. '^(([a-z0-9]([a-z0-9\\\-_]*\.)+)('. LINK_DOMAINS .'|[a-z][a-z]))' .'\'';
}
}
$where_conditions[] = $condition;
}
$query->ensure_table($table);
$query->add_where(implode(' '. $filter['operator'] .' ', $where_conditions));
}
/**
* Forms a valid URL if possible from an entered address.
* Trims whitespace and automatically adds an http:// to addresses without a protocol specified
......@@ -512,7 +646,7 @@ function link_cleanup_url($url, $protocol = "http") {
$protocol_match = preg_match("/^([a-z0-9][a-z0-9\.\-_]*:\/\/)/i",$url);
if (empty($protocol_match)) {
// But should there be? Add an automatic http:// if it starts with a domain name
$domain_match = preg_match('/^(([a-z0-9]([a-z0-9\-_]*\.)+)(aero|arpa|biz|com|cat|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel|mobi|[a-z]{2}))/i',$url);
$domain_match = preg_match('/^(([a-z0-9]([a-z0-9\-_]*\.)+)('. LINK_DOMAINS .'|[a-z]{2}))/i',$url);
if (!empty($domain_match)) {
$url = $protocol."://".$url;
}
......@@ -536,7 +670,7 @@ function link_validate_url($text) {
$allowed_protocols = variable_get('filter_allowed_protocols', array('http', 'https', 'ftp', 'news', 'nntp', 'telnet', 'mailto', 'irc', 'ssh', 'sftp', 'webcal'));
$protocol = '((' . implode("|", $allowed_protocols) . '):\/\/)';
$domain = '(([a-z0-9]([a-z0-9\-_]*\.)+)(aero|arpa|biz|com|cat|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel|mobi|[a-z]{2}))';
$domain = '(([a-z0-9]([a-z0-9\-_]*\.)+)('. LINK_DOMAINS .'|[a-z]{2}))';
$ipv4 = '([0-9]{1,3}(\.[0-9]{1,3}){3})';
$ipv6 = '([0-9a-fA-F]{1,4}(\:[0-9a-fA-F]{1,4}){7})';
$port = '(:([0-9]{1,4}))';
......
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